Difference between revisions of "Run Group A"

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===Manuals===
 
===Manuals===
 +
* [https://clasweb.jlab.org/wiki/images/c/c2/Band_om.pdf BAND]
 +
* [https://clasweb.jlab.org/wiki/images/4/4d/Beamline_manual.pdf Beamline]
 +
* [https://clasweb.jlab.org/wiki/images/9/97/Ops_manual_cnd.pdf CND]
 +
* [https://clasweb.jlab.org/wiki/images/c/c1/Shift_Worker_Manual_January_2018.pdf Cryo-Target]
 +
* [https://clasweb.jlab.org/wiki/images/0/0f/Ctof_manual.pdf CTOF]
 +
* [https://clasweb.jlab.org/wiki/images/a/ab/Opman_master.pdf DAQ]
 
* [https://clasweb.jlab.org/wiki/images/b/b2/Drift-chamber-operating-procedure.pdf DC]
 
* [https://clasweb.jlab.org/wiki/images/b/b2/Drift-chamber-operating-procedure.pdf DC]
* [https://clasweb.jlab.org/wiki/images/b/b0/Ftof_manual.pdf  FTOF]
 
 
* [https://clasweb.jlab.org/wiki/images/a/a2/Ec_manual.pdf ECAL]
 
* [https://clasweb.jlab.org/wiki/images/a/a2/Ec_manual.pdf ECAL]
* [https://wiki.jlab.org/clas12-run/images/d/d2/Ltcc_manual.pdf LTCC]
+
* [https://clasweb.jlab.org/wiki/images/3/3b/FT-Manual.pdf FT]
 +
* [https://clasweb.jlab.org/wiki/images/b/b0/Ftof_manual.pdf FTOF]
 
* [https://clasweb.jlab.org/wiki/images/f/f1/HTCC_MANUAL.pdf HTCC]
 
* [https://clasweb.jlab.org/wiki/images/f/f1/HTCC_MANUAL.pdf HTCC]
* RICH: [https://clasweb.jlab.org/wiki/images/e/ea/RICH_Manual.pdf expert] [https://wiki.jlab.org/clas12-run/images/d/d9/RICH_Controls_mc.pdf novice]
+
* [https://wiki.jlab.org/clas12-run/images/d/d2/Ltcc_manual.pdf LTCC]
* [https://clasweb.jlab.org/wiki/images/0/0f/Ctof_manual.pdf CTOF]
+
* [https://clasweb.jlab.org/wiki/images/9/97/Ops_manual_cnd.pdf CND]
+
* [https://clasweb.jlab.org/wiki/images/6/60/Svt_operation_manual.pdf SVT]
+
 
* [https://clasweb.jlab.org/wiki/images/a/ad/Documentation_Shifters_MVT.pdf MVT]
 
* [https://clasweb.jlab.org/wiki/images/a/ad/Documentation_Shifters_MVT.pdf MVT]
 
** [https://wiki.jlab.org/clas12-run/images/b/bf/MVT_for_Dummies.pdf MVT turn on procedure]
 
** [https://wiki.jlab.org/clas12-run/images/b/bf/MVT_for_Dummies.pdf MVT turn on procedure]
* [https://clasweb.jlab.org/wiki/images/3/3b/FT-Manual.pdf FT]
+
* RICH: [https://clasweb.jlab.org/wiki/images/e/ea/RICH_Manual.pdf expert] [https://wiki.jlab.org/clas12-run/images/d/d9/RICH_Controls_mc.pdf novice]
* [https://clasweb.jlab.org/wiki/images/4/4d/Beamline_manual.pdf Beamline]
+
* [https://clasweb.jlab.org/wiki/images/d/d6/Hall_B_Torus_Power-Up_and_Power-Down_Procedure.pdf Torus Power-Up and Power-Down Procedure]
+
* [https://clasweb.jlab.org/wiki/images/d/dc/Hall_B_Solenoid_Power-Up_and_Power-Down_Procedure.pdf Solenoid Power-Up and Power-Down Procedure]
+
* [https://clasweb.jlab.org/wiki/images/c/c1/Shift_Worker_Manual_January_2018.pdf Cryo Target Operation manual]
+
* [https://clasweb.jlab.org/wiki/images/a/ab/Opman_master.pdf DAQ]
+
 
* [[Media:clas12controls_shift.pdf|Slow Controls]]
 
* [[Media:clas12controls_shift.pdf|Slow Controls]]
 +
* [https://clasweb.jlab.org/wiki/images/d/dc/Hall_B_Solenoid_Power-Up_and_Power-Down_Procedure.pdf Solenoid Power-Up and Power-Down Procedure]
 +
* [https://clasweb.jlab.org/wiki/images/9/96/Svt_operation_manual_v1_1.pdf  SVT]To switch on SVT see [https://logbooks.jlab.org/files/2018/10/3615766/svt_problem_solving_0.pdf SVT short]
 +
* [https://clasweb.jlab.org/wiki/images/d/d6/Hall_B_Torus_Power-Up_and_Power-Down_Procedure.pdf Torus Power-Up and Power-Down Procedure]
  
 
| valign=top |
 
| valign=top |
 
===Procedures===
 
===Procedures===
 
* [[Media:estab_beam.pdf|Establishing Physics-Quality Beam]]
 
* [[Media:estab_beam.pdf|Establishing Physics-Quality Beam]]
* [[Media:moller.pdf|Performing Møller Runs]]
+
* [[Media:clas12moller.pdf|Performing M&oslash;ller Runs]]<!--** [[Media:moller.pdf|Old, Expert M&oslash;ller]]-->
 
* [[Media:HarpScanManual.pdf|Performing Harp Scans]]
 
* [[Media:HarpScanManual.pdf|Performing Harp Scans]]
 
* [https://wiki.jlab.org/hps-run/images/0/0c/Accessing_the_tunnel.pdf Tunnel/Hall Access]
 
* [https://wiki.jlab.org/hps-run/images/0/0c/Accessing_the_tunnel.pdf Tunnel/Hall Access]
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{{PhoneNumbers}}
 
{{PhoneNumbers}}
[https://wiki.jlab.org/clas12-run/index.php?title=Template:PhoneNumbers&action=edit Click Here]  to edit Phone Numbers.  Note, you then also have to [https://wiki.jlab.org/clas12-run/index.php?title=Run_Group_A&action=edit&section=11 edit this page] to force a refresh.
+
[https://wiki.jlab.org/clas12-run/index.php?title=Template:PhoneNumbers&action=edit Click Here]  to edit Phone Numbers.  Note, you then also have to [https://wiki.jlab.org/clas12-run/index.php?title=Run_Group_A&action=edit&section=9 edit this page] to force a refresh.
  
<!-- JUST MODIFY AND SAVE ANYTHING IN THIS COMMENT BLOCK TO FORCE A REFRESH OF THE PHONE NUMBERS TEMPLATEs-->
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<!-- JUST MODIFY AND SAVE ANYTHING IN THIS COMMENT BLOCK TO FORCE A REFRESH OF THE PHONE NUMBERS TEMPLATE-->
  
 
= Short Term Schedule =
 
= Short Term Schedule =
 
<center><font color=blue size=4>
 
<center><font color=blue size=4>
''' CLAS12 Run Group A, Fall 2018 </font> '''<br>
+
''' CLAS12 Run Group A, Spring 2019 </font> '''<br>
''' Beam energy 10.6 GeV (5 pass) '''<br>
+
''' Beam energy 10.2 GeV (5 pass) '''<br>
 
''' Important: Document all your work in the logbook! '''<br>
 
''' Important: Document all your work in the logbook! '''<br>
''' Remember to fill in the [https://docs.google.com/spreadsheets/d/1NpojoOi7_gTt_abxgKoHBlofOL7iNWDrtYuiOJ1zoMw/edit?usp=sharing run list] at the beginning and end of each run <!--(clas12run@gmail.com can fill the run list)'''<br>-->
+
''' Remember to fill in the [https://docs.google.com/spreadsheets/d/1g2L33OKvKVFMq3MNGYAuS02l0CCKomPbDm8iULLhueY/edit#gid=0 run list] at the beginning and end of each run
<!--
+
*'''<font color=red size=6> Shifts are cancelled until 08:00 Saturday September 22, 2018 </font>'''<br>
+
-->
+
 
</center>
 
</center>
  
== RC: Latifa Elouadrhiri==
+
== RC: Nick Markov ==
 
* (757) 575-7540   
 
* (757) 575-7540   
 
* 9 575 7540 from Counting Room
 
* 9 575 7540 from Counting Room
* [mailto:latifa@jlab.org latifa@jlab.org]
+
* [mailto:markov@jlab.org markov@jlab.org]
  
== PDL: Eugene Pasyuk ==
+
== PDL: Maurizio Ungaro ==
 
*  (757) 876-1789  
 
*  (757) 876-1789  
 
* 9 876-1789 from Counting Room
 
* 9 876-1789 from Counting Room
* [mailto:pasyuk@jlab.org pasyuk@jlab.org]
+
* [mailto:ungaro@jlab.org ungaro@jlab.org]
  
<br>
+
{| {{TableStyle1}}
  
* '''Note 1: Be very mindful of the background rates in the halo counters, rates in the detectors, and currents in the SVT for all settings to ensure that they are at safe levels.'''
+
| valign=top width=50% |
The integrated rates on the upstream counters have to be in the range 0-15 Hz (rates up 100 Hz are acceptable) and the rates on the midstream counters have to be in the range 10-20 Hz (acceptable up to 50 Hz) @50 nA. Counting rates in the range of hundreds of Hz may indicate bad beam tune or bleed-through from other Halls.
+
  
* ''' Note 2: At the end of each run, follow the standard DAQ restart sequence '''
+
== <font color=blue>''' Run Plan: April 8-15, 2019'''</font>==
"end run", "cancel", "reset", then if the run ended correctly, "download", "prestart", "iocjscalerRestartAll.sh", "go". If the run did not end correctly or if any ROCs had to be rebooted, "configure", "download", "prestart", "iocjscalerRestartAll.sh", "go".
+
(Last updated: April 12th, 2019 @ 19:00)
  
After each step, make sure it is complete in the Run Control message window. If a ROC has crashed, find which one it is and issue a roc_reboot command and try again. Contact the DAQ expert if there are any questions.
+
<b>DAQ config: PROD66; Trigger file: rga_v2.trg</b>
 +
<!--
 +
* When the Hall is in beam permit:
 +
** Energize the tagger
 +
** The liquid-hydrogen target should be full
 +
** All detectors should be off (except for MVT in safe mode).
 +
** The solenoid should be at -100% field (2416 A) and the torus should be at -100% field (3770 A negatives inbending).
  
* '''Note 3: Nominal beam positions:''' ''' 2C24A (X=0.4 mm, Y=0.4 mm) ''', '''2H01 (X=.5 mm, Y=.2mm)'''
+
* When beam is available:
 +
** Establish the beam on the tagger yoke dump (see instructions [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf]).
 +
** Perform 2C21 and 2C24 harp scans (follow instructions [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf])
  
* '''Note 4: Do not turn OFF FTOF HVs, even during the beam tune with CW beam (turn off if tuned/pulsed beam in the upstream beamline)'''
+
* If beam is acceptable:
 +
** Degauss the tagger magnet
 +
** Set the FSD thresholds(upstream 2000, midstream 2000, downstream 500000, BOM 35000, 5.0 ms dwell time)
 +
** Send 5 nA beam to Faraday cup and make sure beam is clearly seen on the downstream viewer and the halo counter rates are acceptable.
 +
** Perform 2H01 harp scan (follow instructions [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf]).
  
* '''Note 5: In case of a Torus and/or Solenoid Fast Dump do the following:
+
* After beam is established on FC and the beam profile is acceptable, turn on the CLAS12 detectors.
*# Notify MCC to request beam OFF and to drop Hall B status to Power Permit
+
*# Call Engineering on-call
+
*# Make separate log entry with copies to HBTORUS and HBSOLENOID logbooks. In the "Notify" field add Ruben Fair, Probir Goshal, Dave Kashy and esr-users@jlab.org
+
*# Notify Run Coordinator
+
*# Turn off all detectors'''
+
  
*'''Note 6: When beam is being delivered to the Faraday Cup:'''
+
* Take low current production at 10 nA for 4 hr.
*# the Fast Shut Down elements: Upstream, Midstream, Downstream, BOM, and Solenoid should always be in the state <font color=red>UNMASKED</font>
+
-->
*# No changes to the FSD threshold should be made without RC or beamline expert approval
+
<!--
 +
* Take production data at 50 nA in 4 hr runs!
  
*'''Note 7: Do not turn on the SVT or MM - only the SVT or MM expert can do that'''
+
*Note: <font color=red>DO NOT IGNORE</font> unsafe FSD masking alarm! Follow alarm guidance.
 +
Take production data at 50nA for 4 hr until he swing shift.
  
*'''Note 8: Any request for a special run or change of configuration has to be approved by the RC & documented'''
+
Starting from the swing shift,
  
*'''Note 9: Carefully check the BTA every hour and run the script <font color=red>btaGet.py</font> to print for you what HAS TO BE in BTA for this hour. Edit BTA if it is incorrect.'''
+
* Take 2 hours random trigger run at 10 nA using  rgb_v9_1_faraday_noprescale.trg trigger file and beam blocker removed. Expect 10 kHz DAQ rate. Change the DAQ alarm limits by going to DAQ /CLAS12 Trigger /Menu /Alarm Settings Expert/ Set All Normalized Rate Limits when the beam and rates are stable.
  
*'''Note 10: Reset CLAS12MON frequently to avoid histogram saturation.'''
+
* Take 20 minutes random trigger run at 50 nA using  rgb_v9_1_presxcale_3.trg trigger file and beam blocker removed. Expect 15 kHz DAQ rate. Change the DAQ alarm limits by going to DAQ /CLAS12 Trigger /Menu /Alarm Settings Expert/ Set All Normalized Rate Limits when the beam and rates are stable.
  
{| {{TableStyle1}}
+
* Take 6 hours low luminosity run at 10 nA with the beam blocker in and rga_v2.trg trigger. Change the DAQ alarm limits by going to DAQ /CLAS12 Trigger /Menu /Alarm Settings Expert/ Set All Normalized Rate Limits when the beam and rates are stable.
  
| valign=top width=50% |
+
* At 2 am empty the target and run 150 nA beam until the beam is taken away with rga_v2.trg and the beam blocker in. Change the DAQ alarm limits by going to DAQ /CLAS12 Trigger /Menu /Alarm Settings Expert/ Set All Normalized Rate Limits when the beam and rates are stable. Change the BTA accounting limits in the Beamlin/BTA config (replace the upper limit with 160 nA).
  
== <font color=blue>''' Run Plan:'''</font>==
 
<i>(Updated: Sep. 30 2018 at 7:00 a.m.)</i>
 
  
* <font color=red> ''' Make sure that the FSD thresholds are set correctly and they are unmask when ready to receive beam to the FC'''</font>
+
The beam is expected to be back around 3-15 pm on Monday, April 8'th.
* Beam established target is full all the detector are on
+
Change HWP to "OUT" and take a Moeller run.
* Take data for HV scan according to Mac instructions (3599117)
+
After establishing the physics-quality beam (follow the procedure outlined in https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf) take production data at in 4 hours runs at 50 nA, DAQ config: PROD66; Trigger file: rga_v2.trg.
* Once you complete the HV Scan make sure that the setting of <font color=red> ''' the DC is back to production setting 8 9 9'''</font>
+
On the Torus/Magnet power Suppy monitor torus MPS Control Comm 
* Dan will perform his PMT current measurements at different beam current then access to the Hall to reconnect the channels
+
-->
* once Dan has completed his work take data with beam current of 10 nA until 4:00 a.m. DAQ: PROD66 and trigger: trigger _v20_3.trg
+
* At 4:00 a.m. Andrea from Genova will call, he will control the DAQ to take data for FT calibration
+
* Once FT calibration runs are completed resume data taking at 20 nA-DAQ: PROD66 and trigger: trigger _v20_3.trg
+
* RC will update the run plan after the 8:00 a.m.
+
* Any questions call system expert, Rc or PDL.
+
  
<!--* Sunday 9:00 a.m. will perform
+
Take production data at in 4 hours runs at 50 nA, DAQ config: PROD66; Trigger file: rga_v2.trg.
* With all detectors on, perform current scan
+
** before starting, notify experts for SVT/MM, ECAL, FTOF/CTOF so they can monitor scan
+
** check rates vs. beam current to 150 nA (use 5 nA, 20 nA, 50 nA, 75 nA, 100 nA, 150 nA)
+
** record detector rates (FTOF, ECAL, CTOF) and tracking detector currents (DC, CVT) in logbook and record currents on CTOF, FTOF, and PCAL ammeters (see links on-->
+
  
 +
On the Torus/Magnet power Suppy monitor torus MPS Control Comm  light. It should be green. If not, contact Magnet group.
  
 +
<b>Pay special attention to scalers of the PCAL and FTOF in sector 5 (under scalers/CLAS12 Forward Carriage/Sector 5) and make sure there are no dead channels in PCAL and FTOF. Also, when looking at monitoring histograms, pay special attention to sector 5 for the same detectors.</b>
 +
<b> We had a problem with scalers in sector FTOF 4 which went out. Please monitor it very closely (along with sector 5) and if anyhitng happen contact Sergey (DAQ expert) right away.</b>
  
 +
<font color=red>
 +
After the beam is off at 6 am on Monday morning:<br>
 +
- turn the HTCC HV off;<br>
 +
- turn the LTCC HV off;<br>
 +
- turn the FT HV off (only HV!);<br>
  
<!--* Complete empty target run at 80 nA
+
- <b>Do Not turn BAND HV Off</b>.<br>
* Continue data taking with empty target at 100 nA
+
- <b>Do Not turn EC/PCAL HV Off</b>.<br>
* At 7:00 a.m. give the DAQ to Andrea and Nick to perform gain matching for the FT Hodoscope
+
- <b>Do Not turn CTOF and FTOF HV Off</b>.<br>
* At 9:00 a.m. there will be pass change for Hall A so no beam for couple of hours during the day shift
+
- <b>Do Not turn RICH HV Off</b>.<br>
* Run plan will be update after 8:00 a.m. MCC meeting for the day shift
+
- <b>Do Not turn SVT HV Off</b>.<br>
* When beam is off for pass change ask MCC to energize the tagger
+
* During this time test target filling
+
1) Before the start of beam delivery:
+
* When Hall B goes into Restricted Access and before beam comes into the hall, make sure all CLAS12 detectors are turned off
+
* Check that torus field is -100% (negatives inbending) and solenoid field is -100% (contact PDL to change fields)
+
  
1) Complete beam tuning studies - <font color="red">This effort will be carried out under the direction of the beamline expert</font>
+
</font>
* Complete beam tuning to the tagger yoke beam dump following the procedures in the beam tuning document
+
* Take a Moller run
+
* Complete beam tuning to Faraday Cup with empty target following procedures in the beam tuning document
+
* Perform beam centering using BOM and FT-Cal along with beamline halo monitors
+
* Make sure harp scans results for 2C21, 2C24, and 2H01 are posted in the logbook (these will represent our baseline results for the fall 2018 run)
+
* Record nominal beam positions at BPMs in the logbook (these will represent our nominal values for the fall 2018 run)
+
* Ensure FSD settings are proper
+
  
2) With empty target:
+
*Note: <font color=red>DO NOT IGNORE</font> unsafe FSD masking alarm! Follow alarm guidance.
* With 5 nA beam, turn on CLAS12 detectors from least sensitive to most sensitive (call SVT and MM experts to turn their systems on).
+
* Check DAQ rates and trigger performance with May 2018 setup. The current trigger configuration : trigger_v20_1.trg.  This work will be completed under the direction of the DAQ expert.
+
  
4) Once all everything is checked:
 
  
a) Fill the target (call Bob Miller for this step; number on whiteboard)
+
<font color=red>'' [https://clas12mon.jlab.org/mon12/histograms/?reference=3630375 Compare the monitoring histograms from clas12mon to the reference and troubleshoot as needed.] ''</font>
  
b) Turn beam back on at 5 nA - ensure FSD settings are proper
+
<b><font color=red> At the end of each run, follow the standard DAQ restart sequence ''' <br>
 +
''(Note, this might be different from the instructions coming up on RunControl.)''
  
c) Complete DC HV setting scan
+
* "end run", "cancel", "reset"
* See log entry [https://logbooks.jlab.org/entry/3590854 3590854] for settings. Take data for 15 min with 10 nA for each setting. Be sure to reset to the fault HV settings at the end of the test plan R1/R2/R3 #8/#9/#9.-->
+
* if the run ended correctly:
 +
**  '''"download", "prestart", "go"'''
 +
* if the run did not end correctly or if any ROCs had to be rebooted:
 +
** "configure", "download", "prestart", "go"
 +
</font></b>
  
<!--
+
== <font color=blue>''' References and Standards:'''</font>==
* Complete MM setting optimization. This work will be completed under the direction of the MM experts.
+
''(last update March 27, 2019 @ 8:53 a.m.)''
* Take empty target run (8 hrs at 20 nA)
+
* With all detectors on, perform current scan
+
** before starting, notify experts for SVT/MM, ECAL, FTOF/CTOF so they can monitor scan
+
** check rates vs. beam current to 150 nA (use 5 nA, 20 nA, 50 nA, 75 nA, 100 nA, 150 nA)
+
** record detector rates (FTOF, ECAL, CTOF) and tracking detector currents (DC, CVT) in logbook and record currents on CTOF, FTOF, and PCAL ammeters (see links on monitoring tab to access cameras; username/password on whiteboard)
+
* Take empty target run (4 hrs at 150 nA)
+
* Check DAQ rates and trigger performance with August 2018 setup. This work will be completed under the direction of the DAQ expert.
+
* Perform initial trigger test plans (trigger checks and optimization, study of DC tracking trigger, FTOF/PCAL matching). This work will be completed under the direction of the trigger experts.
+
* At end of run, have MCC turn the beam off.
+
  
<font color="red"> Call RC before proceeding with the following tasks:</font>
+
<b> Restoration of Beam to Hall B</b>
  
4a) Fill the target (call Bob Miller for this step; number on whiteboard)
+
<b> Nominal Beam Positions </b>
 +
*2H01, X: +3.0 mm, Y: -1.0 mm
 +
*2C24, X: +0.25 mm, Y: 0.35 mm
  
5a) Turn beam back on at 5 nA - ensure FSD settings are proper
+
<b> FSD Thresholds </b>
 +
* Upstream: 2000 Hz
 +
* Midstream: 2000 Hz
 +
* Downstream: 500000 Hz
 +
* BOM: 35000
  
6a) Complete DC HV setting scan
+
<b> Reference Harp Scans for Beam on Tagger Dump: </b> 2C21 [https://logbooks.jlab.org/entry/3672101], 2C24 [https://logbooks.jlab.org/entry/3672102]
* See log entry [https://logbooks.jlab.org/entry/3590854 3590854] for settings. Take data for 15 min with 10 nA for each setting. Be sure to reset to the fault HV settings at the end of the test plan R1/R2/R3 #8/#9/#9.
+
  
7a). Complete any remaining MM setting optimizations. This work will be completed under the direction of the MM experts.
+
<b> Reference Harp Scans for Beam on Faraday Cup: </b> 2H01 [https://logbooks.jlab.org/entry/3672120]
  
8a) Perform current scan
+
<b> Reference Monitoring Histograms</b> 5 nA production trigger [https://logbooks.jlab.org/entry/3672274], 50 nA, production trigger [https://logbooks.jlab.org/entry/3672136] (to be updated)
* before starting, notify experts for SVT/MM, ECAL, FTOF/CTOF so they can monitor scan
+
* check rates vs. beam current to 75 nA (use 2 nA, 10 nA, 30 nA, 50 nA, 75 nA)
+
* record detector rates (FTOF, ECAL, CTOF) and tracking detector currents (DC, CVT) in logbook and record currents on CTOF, FTOF, and PCAL ammeters (see links on monitoring tab to access cameras; username/password on whiteboard)
+
* DC experts should use this period to finalize their HV and discriminator thresholds
+
* CVT experts should use this period to study currents and stability
+
* After studies call for Hall B access to recover FTOF, ECAL, and CTOF channels plugged into ammeters (call FTOF/CTOF and ECAL experts for this work). Use rapid-access protocol.
+
  
9a) Optimize the FT settings (FT group will take over DAQ control remotely and complete task). This should be done (preferably) during the owl shift.
+
<b> Reference Scalers and Halo-Counter Rates: </b>
 +
* Well-tuned CW beam on FC, Full LH2 target, CLAS12 ON: 5 nA [https://logbooks.jlab.org/entry/3672117], 50 nA [https://logbooks.jlab.org/entry/3672129]
 +
* Well-tuned CW beam on FC, Empty Target, CLAS12 OFF: 5 nA [https://logbooks.jlab.org/entry/3649436]
 +
* Well-tuned beam during Moller run [https://logbooks.jlab.org/entry/3649364]
 +
* Well-tuned beam on Tagger Dump at 5 nA during harp scans: [https://logbooks.jlab.org/entry/3649358]
 +
* Reference FTC histogram for 5 nA running: [https://logbooks.jlab.org/entry/3665122]
  
10a) Check DAQ rates and performance (including initial studies of FADC bit packing)
+
<b> SVT acceptable currents: </b> 1 uA
  
11a) Perform trigger test plans (trigger checks and optimization, study of DC tracking trigger, FTOF/PCAL matching). This work will be completed under the direction of the trigger experts
+
| valign=top |
  
12a) Complete a luminosity scan and record data in the following sequence with the standard RG-A trigger:
+
==<font color=blue>''' General Instructions''':</font>==
* 2 nA - 6 hrs
+
* 10 nA - 2 hrs
+
* 30 nA - 30 min
+
* 50 nA - 30 min
+
* 75 nA - 30 min
+
  
13a) Take data with the standard RG-A trigger at 20 nA for 4 hrs to collect data for baseline subsystem calibrations
+
* The main lights in the Hall (dome lights) and the Forward Carriage lights are being kept off because of light leaks affecting some of the detectors. If these lights are switched on during an access, they should be switched off when leaving the Hall. Note that the dome lights when switched off cannot be turned back on immediately because they require 10-15 min to cooldown.
 +
* Do not run more than 30 minutes above 30 nA with 5-pass beam without the beam blocker in front of Faraday cup. Put beam blocker in for long running at high currents for 5 pass operations.
 +
* Turn DC HV off only for beam tuning; if no beam is available or when beam is stable, keep them on even if you are not taking data.
 +
* In case of loss of communication with IOCBTARG, follow instructions at https://logbooks.jlab.org/entry/3502218
 +
* With any issue contact On-Call Experts or RC - do not spend more than 15-20 min trying to fix the problem.
 +
* Check for and read any comments to log-book entries made during your shift.
  
14a) Take production data with the standard RG-A trigger at 40 nA (3 hr runs)
+
'''Once Per Day (on day shift):'''
 +
* Complete RICH recovery procedure - see Note: 14 below
  
<font color="red"> target is  functional: These tasks will be scheduled for later dates</font>
+
'''Every Shift:'''
 +
* Follow run plan as outlined by RC
 +
* If any concern about beam stability, ask MCC if orbit locks are on (they should be).
 +
* Keep shift summary up to date in HBLOG. Record all that happens.
 +
* Document any beam condition change and send scaler GUIs to HBLOG
 +
* [https://bta.acc.jlab.org Fill out BTA] hourly.  Click "Load from EPICS" to automatically fill the left side.
 +
* Upload spectra from clas12mon at begin and end of shift and cross-check with reference spectra
 +
** Reset clas12mon every ~2 hours and inspect spectra
 +
* Fill and submit the [https://logbooks.jlab.org/checklists/151 shift checklist in the logbook]
 +
* Monitor the SVT Slow Controls status, post plot of current stability in the HBSVT elog once per shift.
  
4b) Ramp torus to 0% field (call Engineering for this step)
+
'''Every Run:'''
  
5b) Take data at 2 nA for DC alignment studies for 1 hr
+
*Log screenshots of:
 +
** main scaler GUI display
 +
** Trigger rate gui
 +
** Beam strip charts
 +
** FTC scalers
 +
* Fill out the run info in [https://docs.google.com/spreadsheets/d/1NY1GNIZXPtpB9u4QwP6eNRSrvDkCzFmhQg5RR3V3j7E/edit#gid=0 run list] at the beginning and at the end of each run.
 +
* <b> When checking the ECAL response, make sure to look at the histograms for each sector by using the sector buttons at the bottom of the clas12mon window - if adcecal* or/and adcpcal* ROC crashes, there will be no alarm and the histograms are the way to notice this issue.
 +
* Same holds for FT.</b>
  
6b) Have MCC turn the beam off
+
|}
  
7b) Ramp solenoid to 0% field (call Engineering for this step)
+
* '''Note 1: Be very mindful of the background rates in the halo counters, rates in the detectors, and currents in the SVT for all settings to ensure that they are at safe levels.'''
 +
The integrated rates on the upstream counters have to be in the range 0-15 Hz (rates up 100 Hz are acceptable) and the rates on the midstream counters have to be in the range 10-20 Hz (acceptable up to 50 Hz) @50 nA. Counting rates in the range of hundreds of Hz may indicate bad beam tune or bleed-through from other Halls.
  
8b) Take data at 2 nA with both magnets for DC and CVT alignment studies off for 8 hrs
+
* '''Note 2: FTOF HVs: The goal is to minimize the number of power cycles of the dividers.
 +
** should be turned off during the initial beam tuning down to the Faraday Cup after CLAS12 has been off for a long shutdown, when doing a Moller run, when doing harp scans, or if there is tuned/pulsed beam in the upstream beamline.'''
 +
** should be left on after an initial beam tune has been established and if there are only minor steering adjustments and “tweaks” being made.
 +
** if shift workers have doubts what to do with the HVs, they can always contact the TOF on-call expert for advice.
  
9b) Take Moller run - work with MCC to maximize electron beam polarization (should be >86%)-->
+
* '''Note 3: In case of a Torus and/or Solenoid Fast Dump do the following:
 +
*# Notify MCC to request beam OFF and to drop Hall B status to Power Permit
 +
*# Call Engineering on-call
 +
*# Make separate log entry with copies to HBTORUS and HBSOLENOID logbooks. In the "Notify" field add Ruben Fair, Probir Goshal, Dave Kashy and esr-users@jlab.org
 +
*# Notify Run Coordinator
 +
*# Turn off all detectors'''
  
== <font color=blue>''' Shift Worker Notes:'''</font>==
+
*'''Note 4: When beam is being delivered to the Faraday Cup:'''
 +
*# the Fast Shut Down elements: Upstream, Midstream, Downstream, BOM, and Solenoid should always be in the state <font color=red>UNMASKED</font>
 +
*# No changes to the FSD threshold should be made without RC or beamline expert approval
  
* From time to time, we might experience trigger bit issues (FT bits: 24, 25, 26, 27). Bit 26 might not trigger the alarm but when this issue happens it will count abnormally high. For the time being, shift leaders can try to do the sequence of End->Cancel->Reset, roc_reboot adcft1 (and adcft2, adcft3), make sure the ROCs are connected, then Download->Prestart->Go. If this does not work, repeat the sequence and add "Configure" in front of "Download". If the trig issue persists, continue to take production data without fixing it -- please make sure you log this infor in the RCDB "Comment" field.
+
*'''Note 5: Any request for a special run or change of configuration has to be approved by the RC & documented'''
  
* If the machine is down for few hours ask for low current first 5 nA make sure that the beam is stable both in position and current, check that the rates are OK on all the detectors and halo counters. Then ask for 40 nA and continue data for production. If there are issues with the beam call the RC. Sometimes MCC operator might ask to deliver tuned beam --- do not accept it. We need CW beam sent to the Faraday cup. If there is indeed a need for tuned beam, it should be sent to the tagger dump with the tagger magnet on. If you are uncertain, please call RC/PDL.
+
*'''Note 6: Carefully check the BTA every hour and run the script <font color=red>btaGet.py</font> to print for you what HAS TO BE in BTA for this hour. Edit BTA if it is incorrect.'''
  
* Sometimes, a couple RICH channel scalers go to 0 and there is no alarm, even though the "# of fibers connected" would be shown to be the correct 138. Shift takers therefore should periodically, especially at the end of run, check the RICH scalers GUI. If there is an issue:
+
*'''Note 7: Reset CLAS12MON frequently to avoid histogram saturation. If CLAS12MON is restarted change MAX scale to 10 (default is 5) for DC normalized occupncy histograms. This would prevent them from saturation. See log entry [https://logbooks.jlab.org/entry/3667416]'''
** For RICH recovery procedures, please see Log entry https://logbooks.jlab.org/entry/3562273.  This would apply in the cases of  1. DAQ crash: rich4 is not responding or 2. RICH alarms (LV,missing tile, temperature etc). If it does not work or you are uncertain about what to do, contact the RICH expert on call.
+
  
'''In case of other questions or uncertainties of what to do, call the RC'''
+
*'''Note 8: Shift workers must check the occupancies! Use this tool to compare to previous runs: [https://clas12mon.jlab.org/mon12/histograms/?reference=3650729]'''
 +
<!--[https://clas12mon.jlab.org/mon12/histograms/?reference=3621580]'''-->
  
<!--
+
*'''Note 9: When you have to turn the whole MVT off, do not press "All HV OFF": Instead go to 'Restore settings' from the MVT overview screen:
'''[[Every Shift:]]'''
+
*# SafeMode.snp for beam tuning and Moeller runs
*Follow run plan as outlined by RC
+
*# MV_HV_FullField.snp for full solenoid field
* If any concern about beam stability, ask MCC if orbit locks are on (they should be).
+
*# MV_HV_MidField.snp wgeb solenoid < 4T
* Keep shift summary up to date in HBLOG. Record all that happens.
+
'''
* Check on white board all scalers, strip charts and monitoring plots that need to be logged regularly
+
*'''Note 10: Check the vacuum periodically, make sure vacuum is not higher than 5e-5 '''
* Document any beam condition change and send scaler GUIs to HBLOG
+
* [https://bta.acc.jlab.org Fill out BTA] hourly.  Click "Load from EPICS" to automatically fill the left side.
+
*Fill and submit the [https://logbooks.jlab.org/checklists/151 shift checklist in the logbook]
+
  
'''[[Every Run:]]'''
+
*''' Note 11: Always reset the CFD threshold after all power off/on on the CND CAMAC crate'''  
''Log screenshots of:''
+
After the CAMAC crate (camac1) holding the CND CFD boards is switched off for any reason, it is mandatory to reset the associated thresholds typing the
* main scaler GUI display
+
following command from any clon machine terminal: $CODA/src/rol/Linux_x86_64/bin/cnd_cfd_thresh -w 0
* Detector occupancy plots
+
* Trigger rate GUI
+
* Beam strip charts
+
* FT-Cal FADC scalers
+
  
-->
+
If this command is failing and the crate is not responding, reboot it as follows: roc_reboot camac1
| valign=top |
+
  
==<font color=blue>''' General Instructions''':</font>==
+
*'''Note 12: ''' Shift workers should anyway check routinely scalers to verify they update correctly and make a logbook entry if anomalies are observed after starting a new run.
  
* For a given beam current, compute the FSD thresholds according to the [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf Establish Physics Quality Beam] document. Call MCC to update the values. Contact the beamline expert if there are questions about setting the FSD thresholds.
+
*'''Note 13: To solve common SVT issues see https://logbooks.jlab.org/entry/3615766'''
* The main lights in the Hall (dome lights) and the Forward Carriage lights are being kept off because of light leaks affecting some of the detectors. If these lights are switched on during an access, they should be switched off when leaving the Hall. Note that the dome lights when switched off cannot be turned back on immediately because they require 10-15 min to cooldown.
+
* Do not run more than 60 minutes above 30 nA with 5-pass beam without the beam blocker in front of Faraday cup. Put beam blocker in for long running at high currents for 5 pass operations.
+
* Turn DC HV off only for beam tuning; if no beam is available or when beam is stable, keep them on even if you are not taking data.
+
* In case of loss of communication with IOCBTARG, follow instructions at https://logbooks.jlab.org/entry/3502218
+
* With any issue contact On-Call Experts or RC - do not spend more than 15-20 min trying to fix the problem.
+
* All jscaler iocs (iocjscalerX) on the health screen (under DAQ tab) must be restarted after every DAQ prestart is completed. Follow this link for detailed instructions https://userweb.jlab.org/~baltzell/CLAS12/SC/jlabScalersOps.txt
+
* Check that no unnecessary beamline-related screens are open.  This includes particularly the big beamline overview screen, but also and any motor/harp/collimator screens, and ioc health screens.
+
* Reference harp scans: [https://logbooks.jlab.org/entry/3571664 2C21], [https://logbooks.jlab.org/entry/3571676 2C24], [https://logbooks.jlab.org/entry/3571859 2H01]
+
  
'''Every Shift:'''
+
*'''Note 14:'''  
*Follow run plan as outlined by RC
+
For RICH recovery procedures, please see Log entry https://logbooks.jlab.org/entry/3562273.   This would apply in the cases of  1. DAQ crash: rich4 is not responding or 2. RICH alarms (LV,missing tile, temperature etc). If it does not work or you are uncertain about what to do, contact the RICH expert on call. <u>Please, note </u> that missing tiles typically occur due to lost communication. Keep in mind that the recovery procedure will kill DAQ. If DAQ is running for other purpose, rather than data taking (for which the RICH acceptance would be important) do not initiate the recovery procedure.
* If any concern about beam stability, ask MCC if orbit locks are on (they should be).
+
** The most critical parameter for RICH is the temperature of the photosensors. If the temperature rises above limits, an interlock will automatically turn the RICH HV and LV. If this happens, notify the expert on call and keep taking data without RICH.
* Keep shift summary up to date in HBLOG. Record all that happens.
+
* Check on white board all scalers, strip charts and monitoring plots that need to be logged regularly
+
* Document any beam condition change and send scaler GUIs to HBLOG
+
* [https://bta.acc.jlab.org Fill out BTA] hourly.  Click "Load from EPICS" to automatically fill the left side.
+
* Fill and submit the [https://logbooks.jlab.org/checklists/151 shift checklist in the logbook]
+
<!-- * Once a shift between the runs Restart FTT gas flow. Follow these steps:
+
** From main clascss open '''FTT Gas'''
+
** Click '''STOP''' and then '''START'''. If you do it quickly interlock will not trip. If interlock trips it will turn OFF FTT HV and you will get an alarm. If this happens do the following:
+
*** On '''FTT Gas''' make sure the gas is flowing
+
*** Open '''FTT Soft Interlocks'''. At the bottom of the screen in the 'FTT gas' section click '''Reset''' for those in red.
+
*** Turn FTT HV back ON.
+
** If not sure or have problems call FT on-call. -->
+
  
'''Every Run:'''
+
*'''Note 15:''' Asymmetry on FTCal ADC Scalers: If the beam current is 5 - 10 nA, and the observed asymmetry is out of specs, i.e. > +-2.5%, check (1) that the beam position is according to specs, (2) the response of the rest of CLAS (compare the scalers of FTOF, CTOF, ECAL, etc. from the Scalers GUI to the reference for that current, as posted above). If positions and other detectors do not show any anomalies, keep running. The ADC scalers require at least ~15 nA for a reliable response.
  
'' Log screenshots of:''
+
*'''Note 16:''' If ROC mmft1 is 100% busy: power cycle FTT LV (FT->FTT Overview, HV stays ON), roc_reboot mmft1, wait until it reboots (ssh mmft1 to verify). If the first LV recycle/mmft1 reboot doesn’t work call FT expert
* main scaler GUI display
+
* Detector occupancy plots
+
* Trigger rate gui
+
* Beam strip charts
+
* FTCalo FADC scalers
+
 
+
|}
+
  
 
= Monitoring =
 
= Monitoring =
Line 317: Line 298:
 
* [http://hallbcam06.jlab.org/ Faraday Cup Beam Viewer]
 
* [http://hallbcam06.jlab.org/ Faraday Cup Beam Viewer]
 
* [http://cctv1.jlab.org Tagger Beam Dump Viewer]
 
* [http://cctv1.jlab.org Tagger Beam Dump Viewer]
* [http://cctv12.jlab.org CND/CTOF Ammeter]
+
<!--* [http://cctv12.jlab.org CND/CTOF Ammeter]
* [http://cctv7.jlab.org FTOF/ECAL Ammeter]
+
* [http://cctv7.jlab.org FTOF/ECAL Ammeter]-->
 
* [http://hallbcam02.jlab.org Hall Fisheye]
 
* [http://hallbcam02.jlab.org Hall Fisheye]
 
* [http://cctv11.jlab.org Saclay Cryotarget]
 
* [http://cctv11.jlab.org Saclay Cryotarget]
Line 334: Line 315:
  
 
|}
 
|}
 +
 +
== Fall 2018 Run ==
 +
{| {{TableStyle1}}
 +
| valign=top |
 +
[[Image:Fall2018_charge.jpg|fall2018_charge.jpg|700px]]
 +
 +
| valign=top |
 +
[[Image:moller_rg_a_fall.jpeg|500px]]
 +
|}
 +
 +
== Spring 2018 Run ==
  
 
{| {{TableStyle1}}
 
{| {{TableStyle1}}
Line 354: Line 346:
 
* [http://clasweb.jlab.org/rcdb RCDB]
 
* [http://clasweb.jlab.org/rcdb RCDB]
 
* [https://clas12mon.jlab.org/ CLAS12 mon page]
 
* [https://clas12mon.jlab.org/ CLAS12 mon page]
* [https://clas12mon.jlab.org/mon12/histograms/ Comparison between mon12 histograms (last 5 runs)]  
+
* [https://clas12mon.jlab.org/mon12/histograms/?reference=3630375 Comparison between mon12 histograms (reference in 1st column compared to last entries)]  
 
* [https://clas12mon.jlab.org/datasize/ Accumulated datasize]
 
* [https://clas12mon.jlab.org/datasize/ Accumulated datasize]
 +
* [https://clas12mon.jlab.org/charge/ Accumulated charge]
 +
 
===Run lists===
 
===Run lists===
 
*[https://docs.google.com/spreadsheets/d/1NpojoOi7_gTt_abxgKoHBlofOL7iNWDrtYuiOJ1zoMw RGA Fall 18 run list]
 
*[https://docs.google.com/spreadsheets/d/1NpojoOi7_gTt_abxgKoHBlofOL7iNWDrtYuiOJ1zoMw RGA Fall 18 run list]
Line 365: Line 359:
 
* [http://opweb.acc.jlab.org/CSUEApps/bta03/pd_shiftplan_history.php Program Deputy Shift Plans]
 
* [http://opweb.acc.jlab.org/CSUEApps/bta03/pd_shiftplan_history.php Program Deputy Shift Plans]
 
* [http://opweb.acc.jlab.org/internal/ops/ops_webpage/run_coord/runcoord_form.php?action=main Run Coordinator Reports]
 
* [http://opweb.acc.jlab.org/internal/ops/ops_webpage/run_coord/runcoord_form.php?action=main Run Coordinator Reports]
 +
* Accelerator daily meetings notes (by Mauri) [https://www.evernote.com/pub/maureeungaro/pdldaily]
 
| valign=top |
 
| valign=top |
===Bluejean meetings===
+
===Bluejeans meetings===
 
+
* [https://bluejeans.com/230805731 Daily Run meeting] 230805731
* [https://bluejeans.com/7572697303] RGA RC and analysis meetings 7572697303
+
 
|}
 
|}
  

Latest revision as of 14:04, 16 December 2021

[edit]

If calling local numbers (with area code prefix 757) from the counting room dial 9+[last 7 digits]. To call other area codes dial 91+[10 digit number]

Person Phone Number
Run Coordinator 9-757 575-7540 (cell)
Physics Division Liaison 9-757 876-1789 (cell)
Shift Expert 5244 or 9-757 329-4846 (cell)
Shift Worker 5126
MCC-OPS 7048
Crew Chief 7045
Crew Chief 9-757 876-3367 (cell)
Program Deputy 9-757 876-7997 (cell)
Engineering on-call 9-757 748-5048 (cell)
Engineering on-call secondary 9-757 897-9060 (cell)
Radcon (needed for target cell swaps) 9-757 876-1743 (cell)
Gate House Guard 5822
Location Phone Number
Hall-B Floor 5165
Hall-B Space Frame 5170, 5171
Hall-B Forward Carriage 5371
Hall-B Counting Room 5245 (Shift1), 5126 (Shift2)
Hall-B Counting Room 5244 (Expert)
Hall-B Gas Shed 7115
System Phone Number On-Call Person
DC (757) 748-5048 (cell) Engineering On-Call
SVT + MM (757) 541-7539 (cell) Yuri Gotra Primary
SVT + MM (757) 753-7769 (cell) Rafo Paremuzyan (secondary)
ECAL (757) 810-1489 (cell) Cole Smith
FTOF/CTOF (757) 344-7204 (cell) Jose Carvajal
CND (757) 344-7204 (cell) Silvia Niccolai
HTCC-LTCC (757) 344-7174 (cell) Youri Sharabian
FT (757) 344-1848 (cell) Raffaella De Vita
BAND (757) 310-7198 (cell) Florian Hauenstein
RICH (757) 344-3235 (cell) Valery Kubarovsky
DAQ (757) 232-6221 (cell) Sergey Boiarinov
Slow Controls (757) 748-6922 (cell) Nathan Baltzell
Beamline (757) 303-3996 (cell) Eugene Pasyuk
Polarized Target (757) 218-2266 (cell) Chris Keith
Target (757) 822-9586 (cell) Bob Miller Primary
Target secondary (757) 897-9060 (cell) Denny Insley

In case of a problem with superconducting magnets call Engineering on-call first, particularly if it is related to cryo.
For all other superconducting magnet problems call magnet group.
Their schedule and phone numbers are posted on the wall next to the Saclay target computer.




Click Here to edit Phone Numbers. Note, you then also have to edit this page to force a refresh.


CLAS12 Run Group A, Spring 2019
Beam energy 10.2 GeV (5 pass)
Important: Document all your work in the logbook!
Remember to fill in the run list at the beginning and end of each run

RC: Nick Markov

PDL: Maurizio Ungaro

Run Plan: April 8-15, 2019

(Last updated: April 12th, 2019 @ 19:00)

DAQ config: PROD66; Trigger file: rga_v2.trg

Take production data at in 4 hours runs at 50 nA, DAQ config: PROD66; Trigger file: rga_v2.trg.

On the Torus/Magnet power Suppy monitor torus MPS Control Comm light. It should be green. If not, contact Magnet group.

Pay special attention to scalers of the PCAL and FTOF in sector 5 (under scalers/CLAS12 Forward Carriage/Sector 5) and make sure there are no dead channels in PCAL and FTOF. Also, when looking at monitoring histograms, pay special attention to sector 5 for the same detectors. We had a problem with scalers in sector FTOF 4 which went out. Please monitor it very closely (along with sector 5) and if anyhitng happen contact Sergey (DAQ expert) right away.

After the beam is off at 6 am on Monday morning:
- turn the HTCC HV off;
- turn the LTCC HV off;
- turn the FT HV off (only HV!);

- Do Not turn BAND HV Off.
- Do Not turn EC/PCAL HV Off.
- Do Not turn CTOF and FTOF HV Off.
- Do Not turn RICH HV Off.
- Do Not turn SVT HV Off.

  • Note: DO NOT IGNORE unsafe FSD masking alarm! Follow alarm guidance.


Compare the monitoring histograms from clas12mon to the reference and troubleshoot as needed.

At the end of each run, follow the standard DAQ restart sequence
(Note, this might be different from the instructions coming up on RunControl.)

  • "end run", "cancel", "reset"
  • if the run ended correctly:
    • "download", "prestart", "go"
  • if the run did not end correctly or if any ROCs had to be rebooted:
    • "configure", "download", "prestart", "go"

References and Standards:

(last update March 27, 2019 @ 8:53 a.m.)

Restoration of Beam to Hall B

Nominal Beam Positions

  • 2H01, X: +3.0 mm, Y: -1.0 mm
  • 2C24, X: +0.25 mm, Y: 0.35 mm

FSD Thresholds

  • Upstream: 2000 Hz
  • Midstream: 2000 Hz
  • Downstream: 500000 Hz
  • BOM: 35000

Reference Harp Scans for Beam on Tagger Dump: 2C21 [1], 2C24 [2]

Reference Harp Scans for Beam on Faraday Cup: 2H01 [3]

Reference Monitoring Histograms 5 nA production trigger [4], 50 nA, production trigger [5] (to be updated)

Reference Scalers and Halo-Counter Rates:

  • Well-tuned CW beam on FC, Full LH2 target, CLAS12 ON: 5 nA [6], 50 nA [7]
  • Well-tuned CW beam on FC, Empty Target, CLAS12 OFF: 5 nA [8]
  • Well-tuned beam during Moller run [9]
  • Well-tuned beam on Tagger Dump at 5 nA during harp scans: [10]
  • Reference FTC histogram for 5 nA running: [11]

SVT acceptable currents: 1 uA

General Instructions:

  • The main lights in the Hall (dome lights) and the Forward Carriage lights are being kept off because of light leaks affecting some of the detectors. If these lights are switched on during an access, they should be switched off when leaving the Hall. Note that the dome lights when switched off cannot be turned back on immediately because they require 10-15 min to cooldown.
  • Do not run more than 30 minutes above 30 nA with 5-pass beam without the beam blocker in front of Faraday cup. Put beam blocker in for long running at high currents for 5 pass operations.
  • Turn DC HV off only for beam tuning; if no beam is available or when beam is stable, keep them on even if you are not taking data.
  • In case of loss of communication with IOCBTARG, follow instructions at https://logbooks.jlab.org/entry/3502218
  • With any issue contact On-Call Experts or RC - do not spend more than 15-20 min trying to fix the problem.
  • Check for and read any comments to log-book entries made during your shift.

Once Per Day (on day shift):

  • Complete RICH recovery procedure - see Note: 14 below

Every Shift:

  • Follow run plan as outlined by RC
  • If any concern about beam stability, ask MCC if orbit locks are on (they should be).
  • Keep shift summary up to date in HBLOG. Record all that happens.
  • Document any beam condition change and send scaler GUIs to HBLOG
  • Fill out BTA hourly. Click "Load from EPICS" to automatically fill the left side.
  • Upload spectra from clas12mon at begin and end of shift and cross-check with reference spectra
    • Reset clas12mon every ~2 hours and inspect spectra
  • Fill and submit the shift checklist in the logbook
  • Monitor the SVT Slow Controls status, post plot of current stability in the HBSVT elog once per shift.

Every Run:

  • Log screenshots of:
    • main scaler GUI display
    • Trigger rate gui
    • Beam strip charts
    • FTC scalers
  • Fill out the run info in run list at the beginning and at the end of each run.
  • When checking the ECAL response, make sure to look at the histograms for each sector by using the sector buttons at the bottom of the clas12mon window - if adcecal* or/and adcpcal* ROC crashes, there will be no alarm and the histograms are the way to notice this issue.
  • Same holds for FT.
  • Note 1: Be very mindful of the background rates in the halo counters, rates in the detectors, and currents in the SVT for all settings to ensure that they are at safe levels.

The integrated rates on the upstream counters have to be in the range 0-15 Hz (rates up 100 Hz are acceptable) and the rates on the midstream counters have to be in the range 10-20 Hz (acceptable up to 50 Hz) @50 nA. Counting rates in the range of hundreds of Hz may indicate bad beam tune or bleed-through from other Halls.

  • Note 2: FTOF HVs: The goal is to minimize the number of power cycles of the dividers.
    • should be turned off during the initial beam tuning down to the Faraday Cup after CLAS12 has been off for a long shutdown, when doing a Moller run, when doing harp scans, or if there is tuned/pulsed beam in the upstream beamline.
    • should be left on after an initial beam tune has been established and if there are only minor steering adjustments and “tweaks” being made.
    • if shift workers have doubts what to do with the HVs, they can always contact the TOF on-call expert for advice.
  • Note 3: In case of a Torus and/or Solenoid Fast Dump do the following:
    1. Notify MCC to request beam OFF and to drop Hall B status to Power Permit
    2. Call Engineering on-call
    3. Make separate log entry with copies to HBTORUS and HBSOLENOID logbooks. In the "Notify" field add Ruben Fair, Probir Goshal, Dave Kashy and esr-users@jlab.org
    4. Notify Run Coordinator
    5. Turn off all detectors
  • Note 4: When beam is being delivered to the Faraday Cup:
    1. the Fast Shut Down elements: Upstream, Midstream, Downstream, BOM, and Solenoid should always be in the state UNMASKED
    2. No changes to the FSD threshold should be made without RC or beamline expert approval
  • Note 5: Any request for a special run or change of configuration has to be approved by the RC & documented
  • Note 6: Carefully check the BTA every hour and run the script btaGet.py to print for you what HAS TO BE in BTA for this hour. Edit BTA if it is incorrect.
  • Note 7: Reset CLAS12MON frequently to avoid histogram saturation. If CLAS12MON is restarted change MAX scale to 10 (default is 5) for DC normalized occupncy histograms. This would prevent them from saturation. See log entry [12]
  • Note 8: Shift workers must check the occupancies! Use this tool to compare to previous runs: [13]
  • Note 9: When you have to turn the whole MVT off, do not press "All HV OFF": Instead go to 'Restore settings' from the MVT overview screen:
    1. SafeMode.snp for beam tuning and Moeller runs
    2. MV_HV_FullField.snp for full solenoid field
    3. MV_HV_MidField.snp wgeb solenoid < 4T

  • Note 10: Check the vacuum periodically, make sure vacuum is not higher than 5e-5
  • Note 11: Always reset the CFD threshold after all power off/on on the CND CAMAC crate

After the CAMAC crate (camac1) holding the CND CFD boards is switched off for any reason, it is mandatory to reset the associated thresholds typing the following command from any clon machine terminal: $CODA/src/rol/Linux_x86_64/bin/cnd_cfd_thresh -w 0

If this command is failing and the crate is not responding, reboot it as follows: roc_reboot camac1

  • Note 12: Shift workers should anyway check routinely scalers to verify they update correctly and make a logbook entry if anomalies are observed after starting a new run.
  • Note 14:

For RICH recovery procedures, please see Log entry https://logbooks.jlab.org/entry/3562273. This would apply in the cases of 1. DAQ crash: rich4 is not responding or 2. RICH alarms (LV,missing tile, temperature etc). If it does not work or you are uncertain about what to do, contact the RICH expert on call. Please, note that missing tiles typically occur due to lost communication. Keep in mind that the recovery procedure will kill DAQ. If DAQ is running for other purpose, rather than data taking (for which the RICH acceptance would be important) do not initiate the recovery procedure.

    • The most critical parameter for RICH is the temperature of the photosensors. If the temperature rises above limits, an interlock will automatically turn the RICH HV and LV. If this happens, notify the expert on call and keep taking data without RICH.
  • Note 15: Asymmetry on FTCal ADC Scalers: If the beam current is 5 - 10 nA, and the observed asymmetry is out of specs, i.e. > +-2.5%, check (1) that the beam position is according to specs, (2) the response of the rest of CLAS (compare the scalers of FTOF, CTOF, ECAL, etc. from the Scalers GUI to the reference for that current, as posted above). If positions and other detectors do not show any anomalies, keep running. The ADC scalers require at least ~15 nA for a reliable response.
  • Note 16: If ROC mmft1 is 100% busy: power cycle FTT LV (FT->FTT Overview, HV stays ON), roc_reboot mmft1, wait until it reboots (ssh mmft1 to verify). If the first LV recycle/mmft1 reboot doesn’t work call FT expert

Webcams

Manuals

Epics on the web

Fall 2018 Run

fall2018_charge.jpg

Moller rg a fall.jpeg

Spring 2018 Run

chart.jpeg

Moller measurement rg-a.jpg


Clas12design.png