Difference between revisions of "Run Group M"
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− | == <font color=blue>''' Run Plan: Jan 28 - Jan | + | == <font color=blue>''' Run Plan: Jan 28 - Jan 31 2022 '''</font> == |
Production runs use <b> PROD67_noVTPread </b> and the trigger <b> rgm_6GeV_inb_v1_0.trg </b>.<br/> | Production runs use <b> PROD67_noVTPread </b> and the trigger <b> rgm_6GeV_inb_v1_0.trg </b>.<br/> | ||
Run duration 100M events or 4 hours, whichever comes first. | Run duration 100M events or 4 hours, whichever comes first. | ||
− | * Running on Ar, with 22nA (determined by DC HV/current trips) | + | * Running on Ar, with 22nA (determined by DC HV/current trips) |
− | + | ** aiming for 1 B triggers / 8 more runs (roughly until Saturday Swing) | |
− | + | ** During Saturday day, take 2 hours at 5 nA and 1 hour at 10 nA | |
− | ** 2 | ||
− | * | + | * Empty Ar target (ask Bob Miller for phone advice) |
− | ** | + | ** Take 2-3 hours of empty target runs (100-150 nA) |
− | * Switch to C target | + | * Switch to C target |
− | ** | + | ** Repeat beam blocker calibration |
− | + | ** Run with 80-90 nA | |
− | |||
− | |||
− | |||
− | |||
− | ** | ||
* Monday pass change (6GeV beam) | * Monday pass change (6GeV beam) | ||
+ | ** Need to establish quality beam, repeat beam centering. | ||
** OUTLOOK: Run on Ar, Sn and C with 6 GeV beam | ** OUTLOOK: Run on Ar, Sn and C with 6 GeV beam | ||
Revision as of 16:23, 28 January 2022
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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+[ten digit number]
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- Note, all non-JLab numbers must be dialed with an area code. When calling from a counting-house landline, dial "9" first.
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Click Here to edit Phone Numbers. Note, you then also have to edit the current page to force a refresh.
CLAS12 Run Group M, Fall 2021
Beam energies: 2.1, 4.0, 6.0 GeV (1.96 GeV/pass)
RC: Susan Schadmand and Sebastian Kuhn
- Susan Schadmand (757) 575-7540, susansch@jlab.org
- Sebastian Kuhn (757) 639-6640, kuhn@jlab.org
- 9 575 7540 from Counting Room
PDL: Valery Kubarovsky
- (757) 876-1789
- 9 876-1789 from Counting Room
- vpk@jlab.org
Run Plan: Jan 28 - Jan 31 2022
Production runs use PROD67_noVTPread and the trigger rgm_6GeV_inb_v1_0.trg .
Run duration 100M events or 4 hours, whichever comes first.
- Running on Ar, with 22nA (determined by DC HV/current trips)
- aiming for 1 B triggers / 8 more runs (roughly until Saturday Swing)
- During Saturday day, take 2 hours at 5 nA and 1 hour at 10 nA
- Empty Ar target (ask Bob Miller for phone advice)
- Take 2-3 hours of empty target runs (100-150 nA)
- Switch to C target
- Repeat beam blocker calibration
- Run with 80-90 nA
- Monday pass change (6GeV beam)
- Need to establish quality beam, repeat beam centering.
- OUTLOOK: Run on Ar, Sn and C with 6 GeV beam
DAQ configuration
PROD67_noVTPread , production trigger rgm_6GeV_inb_v1_0.trg .
At the end of each run, follow the STANDARD DAQ RESTART SEQUENCE
- "end run", if the run ended correctly then: "prestart", "go"
- if the run did not end correctly or if any ROCs had to be rebooted:
- "cancel", "reset"
- "configure", "download", "prestart", "go"
- 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
(last update 01/18/2022- 23:30)
Nominal Beam Positions
- 2H01, X: -0.6 mm, Y: 0.8 mm
- 2C24, X: -2.0 mm, Y: +0.6 mm
FSD Thresholds
- Upstream: 2000 Hz
- Midstream: 2000 Hz
- Downstream: 500000 Hz
- BOM: 10000
- 5 ms dwell time
Reference Harp Scans for Beam on Faraday Cup: 2H01 [1]
Reference Harp Scans for Beam on Tagger dump: 2C21 [2], tagger harp [3]
Reference Monitoring Histograms (6 nA, production C) [4] Old reference Monitoring Histograms (50 nA, production LD2) [5]
Counter rates
- Upstream counters integrated rates: 0-15 Hz (acceptable up to 100 Hz are acceptable) @50 nA.
- Midstream counters: 10-20 Hz (acceptable up to 50 Hz) @50 nA.
- Counting rates of ~ hundreds of Hz may indicate bad beam tune or bleed-through from other Halls.
Beamline vacuum: should be not higher than 5e-5.
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In case of other questions or uncertainties of what to do, call the RC or PDL (remote) shift worker: see dedicated Remote Shifts tab above. |
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