Difference between revisions of "Run Group C"

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** The target group will annealed the current NH3 sample and RF-reverse the target polarization.
 
** The target group will annealed the current NH3 sample and RF-reverse the target polarization.
 
** Starting with the PROD66_PIN DAQ configuration (first run of 20M event, then use PROD66 config.), take data with BHWP out until 9am Wednesday.
 
** Starting with the PROD66_PIN DAQ configuration (first run of 20M event, then use PROD66 config.), take data with BHWP out until 9am Wednesday.
** 11pm: Ask for the BHWP to be put IN (Please inform Hall A ahead of time. Also inform Halls C and D as a courtesy).  
+
** 11pm: Ask for the BHWP to be put IN (Please inform Hall A ahead of time. Also inform Halls C and D as a courtesy). '''NO''' need to take a first in PROD66_PIN DAQ configuration.
 
* Wednesday: Rapid Access at 11am-2pm.  
 
* Wednesday: Rapid Access at 11am-2pm.  
 
** RadCon survey (same as above)
 
** RadCon survey (same as above)

Revision as of 16:05, 11 October 2022

[edit]

NOTE: All NON-JLab numbers MUST be dialed with (757) area code. When calling from a CH landline, dial "9" first. To call from outside, all 4-digit numbers must be preceded by 757-269

Role Phone Number
Hall B Run Coordinator (757) 575-7540 (cell)
Hall B Physics Division Liaison (757) 876-1789 (cell)
MCC 7048
Crew Chief 7045
Crew Chief (757) 876-3367 (cell)
Program Deputy (757) 876-7997 (cell)
RadCon (757) 876-1743 (cell)
Gate House Guard 5822
Location Phone Number
Hall B Floor 5165
Hall B Space Frame 5170 and 5171
Hall B Forward Carriage 5371
Hall B Gas Shed 7115
Hall B Counting House 5244 (Shift Expert)
Hall B Counting House (757) 329-4846 (Shift Expert cell)
Hall B Counting House 5245 or 5126 (Shift Worker)
Hall A Counting House 5501
Hall C Counting House 6000
Hall D Counting House 5504
Hall B System Phone Number On-Call Person
Engineering (757) 748-5048 (cell)
(757) 897-9060 (cell)
Engineering On-Call (primary)
Denny Insley (secondary)
Slow Controls (757) 748-6922 (cell) Nathan Baltzell
Beamline (757) 303-3996 (cell) Eugene Pasyuk
DC (757) 218-4372 (cell)
(757) 748-5048 (cell)
Florian Hauenstein (primary)
Engineering On-Call (secondary)
SVT/MVT/MM (757) 541-7539 (cell)
(757) 753-7769 (cell)
Yuri Gotra (primary)
Rafo Paremuzyan (secondary)
ECAL (757) 810-1489 (cell) Cole Smith
FTOF/CTOF/CND (757) 344-7204 (cell) Daniel Carman
ALERT (757) 329-4844 (cell) Raphael Dupré
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)
(757) 748-6922 (cell)
Christopher Dilks (primary)
Nathan Baltzell (secondary)
DAQ (757) 232-6221 (cell) Sergey Boiarinov
HYDRA (317) 550-9226 (cell) Torri Jeske
Authorized Hall B Solenoid/Torus Operators
Hall B Denny Insley, Morgan Cook, Eugene Pasyuk
Magnet Group Probir Ghosha, Renuka Rajput-Ghoshal
Detector Support Group Brian Eng, Pablo Campero, Tyler Lemon
DC Power Onish Kumar, Sarin Philip
  • Note, all non-JLab numbers must be dialed with an area code. When calling from a counting-house landline, dial "9" first.
  • To call JLab phones from outside the lab, all 4-digit numbers must be preceded by 757-269
  • Click Here to edit Phone Numbers. Note, you then also have to edit the current page to force a refresh.

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



CLAS12 Run Group C, Summer 2022

Daily RC Meetings at 14:00: CH Room 200C, and on Zoom

Zoom information: Link, Meeting ID: 160 867 4253, Passcode: 786506

Run Coordinator: Alexandre Deur

  • (9-)757 575-7540

PDL: Eugene Pasyuk

  • (9-)757 876-1789 , x6020 office

Run Group Coordinator: Sebastian Kuhn

  • (9-)757 639-6640

Run Coordinator and Target Expert Schedule

Longterm Run Plan

Medium-Term Run plan (FTout portion)

IMPORTANT SHIFT NOTES:

* In case of medical or fire emergency, call 9-911 from a LANDLINE phone in the Counting House
* If you have symptoms or a positive COVID test, do NOT come to your shift - instead, inform the PDL and the RC and JLab medical services immediately so that replacements can be arranged.
* If needed, worker shifts can also be taken from off-site - again, inform the PDL and RC. Also, make sure that you follow the instructions under the "Worker Shift" Tab - you need some lead time to set up!

Short Term Schedule

  • Run duration: 100M events or 4 hours, whichever comes first.
  • Current: 8 nA.

Tuesday-Day (10/10/2022)

  • Take production runs with normal PROD66 configuration. 8nA. The duration for each run is 4 hours OR 100 M events.
  • Monitor the beam charge asymmetry on MyaViewer: work at the injector should have reduced it considerably.
  • BHWP is now out (Changed on Monday 10th, 10:10am).
  • Continue data taking with BHWP OUT until Tuesday 9am.
  • Tuesday: Rapid Access 9am-noon.
    • RadCon survey (checking for hotspots, it should take about 10min once the RadCon person is in the Hall).
    • The target group will annealed the current NH3 sample and RF-reverse the target polarization.
    • Starting with the PROD66_PIN DAQ configuration (first run of 20M event, then use PROD66 config.), take data with BHWP out until 9am Wednesday.
    • 11pm: Ask for the BHWP to be put IN (Please inform Hall A ahead of time. Also inform Halls C and D as a courtesy). NO need to take a first in PROD66_PIN DAQ configuration.
  • Wednesday: Rapid Access at 11am-2pm.
    • RadCon survey (same as above)
    • the target material will be changed from NH3 to carbon.
    • Take data with BHWP out until 9am Thursday (NO need to take a first in PROD66_PIN DAQ configuration).
  • Thursday: Restricted Access, 9am-17h (during pass-change for Hall A)
    • RadCon survey (same as above)
    • Solenoid field reversal.
    • The target group will switch the target from carbon to a new sample of NH3. NH3 to be polarized negatively.
    • (Other work will go on in the Hall, see Denny for the list, as well as a possible Hall walktrhough)
    • Moller run. If the beam polarization is low, ask for a spin dance to optimize the Wein angle.
    • Starting with the PROD66_PIN DAQ configuration (first run of 20M event, then use PROD66 config.), take data with BHWP IN.

Run Plan: September - December 2022

GENERAL INFORMATION

  • Before leaving the hall and going to beam permit check that dome lights, forward carriage lights, and pie tower lights are OFF
  • Moller runs should be taken with 8-10 nA.
  • We have a new policy NOT to leave the beam viewer in the beam at all times, to avoid damage to electronics, cameras etc. Please REMOVE the beam viewer unless we are actively tuning the beam or calibrating beam position/raster.
  • We have a new FSD condition for when the raster is operating:
    • IF there is any ammonia sample (NH3 and ND3) in the target, the raster MUST be operating at all times. The Raster FSD must be UNMASKED. Orbit locks MUST be OFF (except for brief moments to restore beam position).
    • For beam tuning or other non-rastered beam, the Raster FSD must be MASKED.
  • Whenever you change the raster offset, ask MCC to NOT correct whatever happens on 2H01. Note new 2H01 values and inform MCC of the new 2H01 x and y values - then they can keep the beam at those positions.
  • It should no longer be necessary to quit RasterMon at the end of each run and restart after a successful "Go" for the next run, but if DAQ crashes, you SHOULD follow these steps, and the same for mon12. Make sure there is ONLY ONE INSTANCE of RasterMon AND mon12 running anywhere in the Counting House.
  • REMINDER FOR ALL EXPERTS: Please take care to fill out the BTA carefully and correctly. The info from EPICS is not always correct, e.g. when taking data with low beam current, you should change the ABU to the proper (estimated) time by hand instead of simply accepting "0" if you are actually taking data.
  • After each change of running conditions (target type, luminosity): Please check that the trigger alarms (on rate/nA) are set appropriately and change them as needed.
  • Whenever the target type or polarization direction changes, or the half-wave plate status changes, make sure to enter a comment in the BEGIN RUN / END RUN comment box.
  • Do not change running conditions while a run is ongoing. This includes changing target polarization or HWP, etc.
  • The Faraday Cup power limit for the continuous operation was lifted up to 1 kW. For the remainder of the RGC the beam blocker should not be used https://logbooks.jlab.org/entry/4047791

5-pass (10.55 GeV) Running conditions

  • Torus at 100% current, inbending electrons. Setpoint = +3770 A (Readback = +3766 A)
  • Solenoid setpoint +2417.5 A

DAQ configuration

  • Configuration PROD66/PROD66_PIN, trigger file rgc_300MeV_v2.3_Q2_1.5GeV2.trg
  • NOTE: UNLESS a RICH problem crashes the DAQ, do NOT interrupt an otherwise smooth run to do a RICH recovery - instead do this in between runs.
  • NOTE: BOTH the shift expert AND the shift worker MUST check and reset monitoring histograms at least once every 30-60 minutes to make sure there are no major detector problems.Watch the raster pattern!
  • At the end of each run, follow the STANDARD DAQ RESTART SEQUENCE:
    • "end run".
    • If the run ended correctly and you will run with the same configuration and trigger file, then: "prestart", "go"
    • If you are changing configuration (between PROD66 and PROD66_PIN) or trigger file: "cancel", "reset", "configure", "download", "prestart", "go".
    • if the run did not end correctly or if any ROCs had to be rebooted:
      • Quit ALL running instances of mon12 and rastermon
      • "cancel", "reset"
      • "configure", "download", "prestart", "go"
      • restart mon12 and rastermon
  • After each step, make sure it is completed in the Run Control message window. If a ROC has crashed, find which one it is, issue a roc_reboot command ON JUST THAT ROC and try again. Contact the DAQ expert if there are any questions.

References and Standards 19 Sept. 22 (updated October 9, 2022)

Solenoid set-point of 2417.5 A results in read back 2419.57 A and exactly 5.00 T field on center

Raster settings

  • x: Vpp = 3.6 V, offset = -0.65 V
  • y: Vpp = 3.2 V, offset = -0.15 V
  • Fundamental Period = 2 s
  • The correct raster calibration constants should be automatically loaded by rastermon - if not, enter them through "Config" by hand:
  • f(x) = 0.0104*x + -25.5
  • f(y) = -0.0115*y + 24.4

Nominal Beam Positions

  • 2H01, X = -1.9 mm, Y = +1.0 mm
  • 2C24A, X = -2.0 mm, Y = +0.6 mm
  • 2C21A, X = -0.4 mm, Y = +0.6 mm
  • Orbit lock on 2C24 and 2H01 ONLY if raster is OFF, otherwise orbit lock on 2C21 and 2C24 (note: this appears as "stopped" on the beam line GUI).

FSD Thresholds

  • Upstream: 2000 Hz
  • Midstream: 2000 Hz
  • Downstream: 100000 Hz (1e5)
  • BOM: 1000000 Hz
  • 5 ms dwell time

Reference plots and histograms

  • Harp Scans for Beam on Faraday Cup, 2H01 [1], more recent scan (3 Sept 2022): [2]
  • Harp Scans for Beam on 2C21 [3], more recent scan (3 Sept 2022): [4]
  • Harp Scan on Tagger Dump (3 Sept. 2022) [5]
  • Monitoring Histograms (18 Sept 2022) [6]
  • RasterMon (18 Sept 2022) [7]

Counter rates

  • With 6 nA beam, the upstream counters should read zero.
  • The Midstream ones should read 0-20 Hz or so.
  • Greatly increased rates may indicate bad beam tune or bleed-through from other Halls.

NOTE: BOTH the shift expert AND the shift worker MUST check monitoring histograms at least once every 30 - 60 minutes to make sure there are no major detector problems.

  • Follow the Short Term Schedule as outlined by RC
    • includes Run Plan, DAQ configuration, and References and Standards
  • Keep shift summary up to date in HBLOG. Record all that happens.
  • Ensure that all monitoring plots are logged correctly and checked against the reference plots for every single run.
  • Polarized target:
    • Helicity-Latched Trigger GUI and the Helicity Trigger Asymmetry strip-chart (not accessible remotely) (example https://logbooks.jlab.org/entry/4041939).
    • In case of any issues, contact the polarized target expert on call.
    • Ice on the run valve
    • NMR running
      • The JLab Polarization Display is seen via a VNC window in the counting room. Here, the NMR Controls' blue bar must be moving, indicating that the NMR is running and the polarization is measured.
      • The NMR frequency needs to be controlled by hand. If you see target polarization (on the red graph) starting to drop, call the expert. They will guide you through the adjustment procedure. This will be in the electronics room by the door to the counting room, in the third crate from the right ("CR-6"). White box which says "EIO Tube" and has a red button at the top right, which says "Move", next to a display for "Position". This will be the one to press, under guidance of the target expert.
    • Alarms from System RG-C Polarized Target (alarm handler).
  • Do a RICH recovery (press the RICH Recovery button on the GUI) once daily during day shift, between runs. Please log in shift summary.
    • Note the automated "RICH Recovery" sequence already confirms RICH4 is up and accepting ssh connections before claiming success.
    • You have to "Cancel->Reset->Configure->Download->Prestart" before starting the next run.
  • Fill out BTA hourly. Click "Load from EPICS" to automatically fill the left side then correct as needed.
    • Accelerator beam time:
      • ABU: acceptable beam used (eg harp scans, calibrations, trigger settings, running)
        • The info from EPICS is not always correct, e.g. when taking data with low beam current, you should change the ABU to the proper (estimated) time by hand instead of simply accepting "0" if you are actually taking data.
      • BANU: beam acceptable but not used (eg radiator change or our problems)
      • BNA: beam not acceptable (eg tuning, drifting, not focused)
    • Experiment beam time
      • ER: experiment ready
      • PCC: planned configuration change (when beam is masked while radiators are moved, DAQ (roc rebooting, restarting runs)), if more than 5 minutes, put a short comment, eg harp scans or DAQ.
      • UED: unplanned experiment down (hardware failure)
    • Enter fields at tab "Shift Information"
    • Promptly send "Info for MCC" at 7:00, 15:00, and 23:00
    • Sign, viz log completed 8 hour sheet


In case of other questions or uncertainties of what to do, call the RC or PDL

(remote) shift worker: see dedicated Worker Shift tab above.

For REMOTE Shifts (offsite):

ATTENTION: If you plan to take (a) remote shift(s), you MUST test your setup (including VNC connection) at least 24 hours before your first shift!

Shift Worker Tasks

New: Use the new HBRUN logbook for automated and run-specific entries and screenshots, see https://logbooks.jlab.org/entry/4048698

Make the following log entries ONCE per run

  • Screenshots: submit to logbook only if you capture the information with beam ON
    • Beamline Overview, in VNC or Web Browser
    • CLAS12 Trigger rates and DAQ status
    • RGC Polarized Target GUI - under Beamline on CS-Studio
    • Helicity Trigger Asymmetry strip-chart (CS-Studio -> Helicity-Latched Trigger GUI Screen -> Menu -> livePlot). See more info below

Once per shift:

  • Fill the shift checklist
  • Log screen shots of RICH temperature and scaler maps. Log in RICH logbook.

Regularly:

  • reset & check spectra frequently (every 30 - 60 minutes)
    • Some plots in the online mon12 have a choice of histogram sets per sector, select buttons at the bottom of the plot. That means you have to look at all sectors for these histograms.
    • The logbook entry shows all histograms.
  • Check the life cam of the polarized target run valve for plumes or ice buildup (hallbcam04)
    • Make sure you refresh the web page! Its no longer necessary to put a snapshot into the logbook UNLESS something looks suspicious. In THAT case, immediately inform the target expert(s).
  • Log the strip charts in time intervals according to the x-axis time span, via right-click on the screen and selecting "Make Elog Entry". Make sure NOT to submit to ELOG.
    • Beam current and position strip-charts (CS-Studio -> Beamline -> Strip Charts)
    • Helicity Trigger Asymmetry strip-chart (CS-Studio -> Helicity-Latched Trigger GUI Screen -> Menu -> livePlot)
      • Example https://logbooks.jlab.org/entry/4041939) (not accessible remotely).
      • Select the 2nd variable from bottom (dark green) on all 3 strip charts to get a reasonable scale. Set the vertical scale on the bottom strip chart manually to have the same range for both variables, roughly from 0.5 to 0.9.


Clas12design.png