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/9/96/Svt_operation_manual_v1_1.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]
  
 
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===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]
* [https://clonwiki0.jlab.org/wiki/index.php/DAQ/Online_Quick_Reference <span style="color:red;"><b>DAQ Quick Reference/Recovery</b></span>]
+
<!--* [https://clonwiki0.jlab.org/wiki/index.php/DAQ/Online_Quick_Reference <span style="color:red;"><b>DAQ Quick Reference/Recovery</b></span>] -->
  
 
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<!--#######################################  PHONE NUMBERS  #############################################-->
 
<!--#######################################  PHONE NUMBERS  #############################################-->
 
{{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=Engineering_Run&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-->
+
<!-- JUST MODIFY AND SAVE ANYTHING IN THIS COMMENT BLOCK TO FORCE A REFRESH OF THE PHONE NUMBERS TEMPLATE-->
  
 
= Short Term Schedule =
 
= Short Term Schedule =
<!--#######################################  SHORT TERM  ################################################-->
 
 
<center><font color=blue size=4>
 
<center><font color=blue size=4>
''' CLAS12 Run Group A, Spring 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/1j6UMJsId8VlsY00dg9Vqm0wmEJZLWVZlsBS-aL49xxw/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
 
+
 
</center>
 
</center>
  
== RC: Stepan Stepanyan ==
+
== RC: Nick Markov ==
 
* (757) 575-7540   
 
* (757) 575-7540   
 
* 9 575 7540 from Counting Room
 
* 9 575 7540 from Counting Room
* [mailto:stepanya@jlab.org stepanya@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 UPSTREAM counters has to be  in the range 0-15 Hz (rates up 100 Hz are acceptable) and MIDSTREAM has to be in the rage 10-20 Hz (acceptable up to 50 Hz) @50 nA. Count rates in the range of hundreds or more may indicate bad beam tune or bleed-through from other Halls.
+
  
* ''' Note 2: At the end of each run, follow the DAQ restart sequence '''
+
== <font color=blue>''' Run Plan: April 8-15, 2019'''</font>==
 +
(Last updated: April 12th, 2019 @ 19:00)
  
''' "end run", "cancel", "reset"''', then
+
<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).
  
if run ended correctly ''' "download", "prestart", "iocjscalerRestartAll.sh", "go". '''
+
* 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])
  
if run did not ended correctly, or ROCs had to be rebooted '''"Configure", "download", "prestart", "iocjscalerRestartAll.sh", "go". '''
+
* 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]).
  
After DAQ prestart is complete reboot the scaler IOCs with the command:'''  iocjscalerRestartAll.sh. '''
+
* After beam is established on FC and the beam profile is acceptable, turn on the CLAS12 detectors.
  
Note: 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.
+
* Take low current production at 10 nA for 4 hr.
 +
-->
 +
<!--
 +
* Take production data at 50 nA in 4 hr runs!
  
* '''Note 3: Nominal beam positions:''' ''' 2C24A (X=0.5,Y=0.5) ''', '''2H01 (X=1.0 mm, Y=-1.5 mm)''' see log entry https://logbooks.jlab.org/entry/3560786.
+
*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 4: Do not turn OFF FTOF HVs, even during the beam tune'''
+
Starting from the swing shift,
  
* '''Note 5: In case of the Torus and/or Solenoid Fast Dump do the following -
+
* 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.
*# Notify MCC, request beam OFF and drop Hall status to Power Permit
+
*# Call Engineering on-call
+
*# Make separate log entry with copies to HBTORUS and HBSOLENOID logbooks. In the "Notify" filed add Ruben Fair, Probir Goshal, Dave Kashy and esr-users@jlab.org
+
*# Notify Run Coordinator
+
*# Call the MM expert to turn the detector off
+
*# Call SVT expert to turn SVT off
+
*# Turn off all the other detectors'''
+
  
*'''Note 6: When beam is being delivered to the Faraday Cup -'''
+
* 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.
*# the Fast Shut Down: Upstream, Midstream, Downstream, BOM and Solenoid should be always <font color=red> Unmasked</font>,
+
*# No changes to the FSD threshold without RC or beamline expert approval.
+
  
*'''Note 7: Do not turn on or off SVT - only SVT expert can do that'''
+
* 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.
*'''Note 8: Any request for a special run or change of configuration has to be approved by RC & documented.'''
+
*'''Note 9: Check carefully BTA every hour and run script <font color=red> btaGet.py </font>. It will  print for you what HAS TO BE in BTA for this hour. Edit BTA if it is incorrect.'''
+
*'''Note 10: Reset CLAS12MON frequently to avoid histogram saturation.'''
+
  
{| {{TableStyle1}}
+
* 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).
  
| valign=top width=50% |
 
  
== <font color=blue>''' Run Plan: April 18-22'''</font>==
+
The beam is expected to be back around 3-15 pm on Monday, April 8'th.
<!--*When beam is available, notify beamline expert and run coordinator. Follow instructions in the "Establish-physics quality beam" procedure at [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf] to get an acceptable beam profile. <del>Call PDL to ramp up solenoid and torus to 100%, with negative inbending.</del>
+
Change HWP to "OUT" and take a Moeller run.
*Once the beam profile is satisfying (2C21:[https://logbooks.jlab.org/entry/3539650], 2C24:[https://logbooks.jlab.org/entry/3539651], empty target beamline overview: [https://logbooks.jlab.org/files/2018/03/3542898/clonpc14_20180305_050347.gif]), call beamline expert to perform Moller run.  
+
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.
*After the Moller run, turn off HVs of all detectors. Then send beam to the Faraday Cup with empty target. <font color=red> Make sure Upstream, Midstream, Downstream, BOM and Solenoid FSDs are Unmasked with appropriate thresholds. </font>
+
On the Torus/Magnet power Suppy monitor torus MPS Control Comm  
*Once the beam is going to the Faraday cup, call MCC to stop the beam and fill the target. ([https://logbooks.jlab.org/entry/3539815])
+
*Set correct FSD thresholds for 50nA and then ask MCC to send 50 nA.
+
*Except for SVT, turn on HVs for all detectors. Call SVT expert to turn ON SVT.-->
+
 
+
<!--
+
* Till Monday morning continue taking production data with RGA Trigger: <b>trigger_v12_2.trg</b> @ 50nA
+
* Try to collect 100M events per run (make sure "ROL1 BLOCK_LVL is OK" in terminal bottom left corner before pushing "GO" button.).
+
 
-->
 
-->
  
<!--== '''Run Plan for April 17-18''' ==
+
Take production data at in 4 hours runs at 50 nA, DAQ config: PROD66; Trigger file: rga_v2.trg.
-->
+
* Take production data with trigger_v12_3.trg @ 50nA, 100M events per run.
+
  
* 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 50 nA and continue data for production. If there are issues with the beam call the RC.
+
On the Torus/Magnet power Suppy monitor torus MPS Control Comm light. It should be green. If not, contact Magnet group.
  
* <font color=red>'''Please contact the Micromegas (BMT, FMT & FTT) expert if there are trips, or if you notice any issues in the online monitoring. Do not turn OFF or ON the MM only the expert  can do that. See Log entry https://logbooks.jlab.org/entry/3556528 '''</font>
+
<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>
  
'''In case of other questions or uncertainties of what to do, please call the RC'''
+
<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>
  
 +
- <b>Do Not turn BAND HV Off</b>.<br>
 +
- <b>Do Not turn EC/PCAL HV Off</b>.<br>
 +
- <b>Do Not turn CTOF and FTOF HV Off</b>.<br>
 +
- <b>Do Not turn RICH HV Off</b>.<br>
 +
- <b>Do Not turn SVT HV Off</b>.<br>
  
 +
</font>
  
<!-- === Updated March 6, 9:39 ===
+
*Note: <font color=red>DO NOT IGNORE</font> unsafe FSD masking alarm! Follow alarm guidance.
*Due to the power failure, accelerator will be off for some extended time. All shifts are canceled for the 48 hours.
+
Next staffed shift will be Thursday, March 8'th expert day shift.
+
*Machine update https://logbooks.jlab.org/entry/3543255
+
-->
+
<!--
+
Due to the power failure, accelerator will be off for some extended time. All shifts are canceled for the 24 hours. Next staffed shift will be Tuesday, March 6'th expert swing shift.
+
Machine update https://logbooks.jlab.org/entry/3543255
+
  
*Take data with the 50 nA beam, trigger file trigger_v9.cnf, 100M  events per run.
 
*Monitor livetime closely.
 
  
* ''Sat Feb 23: Take data with 35 nA beam until Sergei creates the new trigger file''
+
<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>
* ''When Sergei comes he will test the new trigger file with 50 nA beam '', if it works, then the plan for the weekend is to take production data with 50 nA beam.
+
  
* ''' Before Accelerator gets beam off for beam studies we should take empty target run, It will be around Monday 7 AM. RC will notify later if the time for empty target runs is changed '''
+
<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.)''
  
* ''' Monday when MCC takes the beam off we might go to "Controlled access" during beam studies. Please ask MCC for controlled access with Radiation survay  '''  
+
* "end run", "cancel", "reset"
* ''' Monday when hall is sweeped, ask MCC to energize the tagger magnet, and then follow instructions in section 1 "Beam to tagger-yoke dump" from this link https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf  '''
+
* 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>
  
* ''' When good beam is establisged on tagger magnet Yoke, we should do two Moller runs, 1st with half wave plate OUT, and 2nd with half wave plate "IN", please follow instructions in this link https://wiki.jlab.org/clas12-run/images/1/1d/Moller.pdf'''
+
== <font color=blue>''' References and Standards:'''</font>==
 +
''(last update March 27, 2019 @ 8:53 a.m.)''
  
* ''' When Moeller runs are finished, ask MCC to deGaus the tagger magnet, and follow instructions for sending the beam to Faraday Cup  https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf Section 2'''.
+
<b> Restoration of Beam to Hall B</b>
  
* ''' As soon a good beam is established (good harpscan, beam is centered in FTCalo), then turn on HV on detectors, and start taking data with trigger_v7 '''.
+
<b> Nominal Beam Positions </b>
* ''' We want to check whether we can go to a higher current 55 nA, and check whether DAQ is stable and livetime is around 90%, if it works, then we should keep the 55 nA beam current, otherwise we should go back to 50 nA '''
+
*2H01, X: +3.0 mm, Y: -1.0 mm
-->
+
*2C24, X: +0.25 mm, Y: 0.35 mm
<!--
+
The beam position should be as indicated above. Make sure FSD thresholds are set correctly for whatever current is selected (refer to instructions in the "Establish-physics quality beam" procedure at [https://wiki.jlab.org/clas12-run/images/e/e3/Estab_beam.pdf]), integration time is set to 5 ms, and that the orbit locks are on. -->
+
  
 +
<b> FSD Thresholds </b>
 +
* Upstream: 2000 Hz
 +
* Midstream: 2000 Hz
 +
* Downstream: 500000 Hz
 +
* BOM: 35000
  
<!--
+
<b> Reference Harp Scans for Beam on Tagger Dump: </b> 2C21 [https://logbooks.jlab.org/entry/3672101], 2C24 [https://logbooks.jlab.org/entry/3672102]
<font color=blue>'''  February 20 swing, February 21 owl and day shifts Run Plan'''</font>
+
  
* Take data with a production trigger trigger_v4.trg untill 1 PM Wed. Feb. 21, and at 1PM call MCC and request "Restricted" access.
+
<b> Reference Harp Scans for Beam on Faraday Cup: </b> 2H01 [https://logbooks.jlab.org/entry/3672120]
** HV on all detectors should be off, except SVT you can turn HV off, for SVT call Yuri and ask to turn SVT HV off
+
** Call PDL (Eugene) and ask to rump Solenoid and Torus down.
+
  
* When we back again to beam permit, we should directly go into FCup
+
<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)
** Eugune will rump up Solenoid and Torus magnets
+
** Make sure Solenoid FSD is unmasked "There should not be any Yellow or Red lights under the Solenoid FSD"
+
** Make sure HV on all detectors are off except FT CALO.
+
** Tagger magnet is "OFF"
+
** Collimator is at '20 mm' position
+
** Request for 2 nA beam
+
  
** Make sure Solenoid FSD is unmasked "There should not be any Yellow or Red lights under the Solenoid FSD"
+
<b> Reference Scalers and Halo-Counter Rates: </b>
** Make sure HV on all detectors are off except FT CALO.
+
* 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]
** Tagger magnet is "OFF"
+
* Well-tuned CW beam on FC, Empty Target, CLAS12 OFF: 5 nA [https://logbooks.jlab.org/entry/3649436]
** Collimator is at '20 mm' position
+
* Well-tuned beam during Moller run [https://logbooks.jlab.org/entry/3649364]
** Request for 5 nA beam
+
* 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]
  
** Look carefully int Halo counters, all halo counters upstream of the target are counting less than 10 Hz
+
<b> SVT acceptable currents: </b> 1 uA
** Look into FT Calo scaler screen, which is the main measure how the beam is centered, for reference look https://logbooks.jlab.org/entry/3535015 this, and make sure X and Y asymmetry is close to 0 (less than +/-6% with 2 nA beam, and less than 3% when you go to production current).
+
** If the beam is centered enough and halo rates on midstream and upstream halo counters don't exceed few Hz, request for 20 nA beam, and ask out orbit lock to be engaged. Check again beam is centered, and halo counters still coun order of few Hz.
+
** Check also beam position on 2H01, should be around '''2H01 (X=1.0 mm, Y=-1.5 mm)'''
+
  
* Next step is to do harp scans with all three harps, 2c21 harp, tagger harp and 2H01 harp
 
** Before 2C21 and tagger harps scans put Upstream and midstream FSD thresholds to 100000, and the integration time 50ms.
 
** You should not see any signifcant halo, the bgr/Peak ratio should be below 5e-3
 
** As soon you are done with 2c21 and tagger harp scans, put back FSD hresholds for upstream and midstream counters to 1000, and integration time to 5 ms.
 
 
** For 2H01 harp scan, ask BOM limit to be 1000000 and itegration time 50 ms. then do 2H01 harp scan. Compare harp scan result to the most recent one https://logbooks.jlab.org/entry/3534806, make sure beam sigmas are close to the one in the link.
 
 
* Next step is to tur HV on for detectors, for '''SVT''' only call Yuri and ask him to turn SVT HV on.
 
* Sergei has added a new component PCal Ustrips (PCU) in the trigger, it's timing should be checked, call sergei and ask him to take over the DAQ to adjust the relative timing of PCU. This should approximetely take about 1 hour.
 
* As soon Sergei has finished timing adjustment, ask for 35 nA beam, and take production data with trigger_v5.trg
 
-->
 
<!-- * If the machine is down and it is back start with low current first  (2nA and 5 nA)  making sure that the beam is stable in current and position before moving to 30 nA
 
-->
 
 
 
 
 
<!--
 
'''[[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.
 
* 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]
 
 
'''[[Every Run:]]'''
 
''Log screenshots of:''
 
* main scaler GUI display
 
* Detector occupancy plots
 
* Trigger rate gui
 
* Beam strip charts
 
* FTCalo FADC scalers
 
 
-->
 
 
| valign=top |
 
| valign=top |
  
 
==<font color=blue>''' General Instructions''':</font>==
 
==<font color=blue>''' General Instructions''':</font>==
  
* 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.
 
 
* 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.
 
* 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.
+
* 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.
 
* 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
 
* 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.  
+
* 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 for and read any comments to log-book entries made during your shift.
* Check that no unecessary 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.
+
 
 +
'''Once Per Day (on day shift):'''
 +
* Complete RICH recovery procedure - see Note: 14 below
  
 
'''Every Shift:'''
 
'''Every Shift:'''
*Follow run plan as outlined by RC
+
* Follow run plan as outlined by RC
 
* If any concern about beam stability, ask MCC if orbit locks are on (they should be).
 
* 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.
 
* 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
 
* 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.
 
* [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]
 
* 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:
+
* Monitor the SVT Slow Controls status, post plot of current stability in the HBSVT elog once per shift.
** 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:'''
 
'''Every Run:'''
  
'' Log screenshots of:''
+
*Log screenshots of:
* main scaler GUI display
+
** main scaler GUI display  
* Detector occupancy plots
+
** Trigger rate gui
* Trigger rate gui
+
** Beam strip charts
* Beam strip charts
+
** FTC scalers
* FTCalo FADC 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>
  
 
|}
 
|}
 +
 +
* '''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:
 +
*# 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 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
 +
 +
*'''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 <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.'''
 +
 +
*'''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]'''
 +
 +
*'''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:
 +
*# SafeMode.snp for beam tuning and Moeller runs
 +
*# MV_HV_FullField.snp for full solenoid field
 +
*# 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 13: To solve common SVT issues see https://logbooks.jlab.org/entry/3615766'''
 +
 +
*'''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. <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.
 +
** 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
  
 
= Monitoring =
 
= Monitoring =
Line 291: 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 CAMAC Crate]
+
<!--* [http://cctv12.jlab.org CND/CTOF 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 307: 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 327: 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/1j6UMJsId8VlsY00dg9Vqm0wmEJZLWVZlsBS-aL49xxw RGA run list]
+
*[https://docs.google.com/spreadsheets/d/1NpojoOi7_gTt_abxgKoHBlofOL7iNWDrtYuiOJ1zoMw RGA Fall 18 run list]
 +
* [https://docs.google.com/spreadsheets/d/1j6UMJsId8VlsY00dg9Vqm0wmEJZLWVZlsBS-aL49xxw RGA Winter 18 run list]
 
* [https://docs.google.com/spreadsheets/d/1frfBlq51qDXZD6fW5rcRefNXSGdVvdMozKUlAVNoUGc ER run list]
 
* [https://docs.google.com/spreadsheets/d/1frfBlq51qDXZD6fW5rcRefNXSGdVvdMozKUlAVNoUGc ER run list]
 
| valign=top |
 
| valign=top |
Line 337: 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 13:04, 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)
Run Group C coordinator 9-757 639-6640 (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) Jose Carvajal
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
Pol. Target On-Call (757)-218-2266 (cell) See schedule or call RC
Polarized Target (757) 746-9277 (cell) Chris Keith
Polarized Target (757) 897-1415 (cell) James Maxwell
Polarized Target (757) 871-5374 (cell) James Brock
Target (not used) (757) 822-9586 (cell) Bob Miller Primary
Target (not used) (757) 897-9060 (cell) Denny Insley Secondary
Counting House C x6000
Counting House D x5504

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