Revision as of 08:30, 5 July 2022

Current Status

Accelerator status:
- Accelerator has only reliably been able to deliver 43uA of beam over the long weekend
- Will limp along long like this until tomorrow
- Maintenance day scheduled tomorrow - will hopefully improve things

Please pro-rate ABU for max current limit in run plan (uA) in beam time accounting. For example, if we receive 15 uA instead of the max_current_limit in the run plan, then the ABU should be: ABU_prorated = 15/(max current limit) * ABU
Check the HMS/SHMS rates for when production starts, since for Heep coin. production SHMS saw higher rates. Make sure shift crew takes snapshot of scalers at every setting
When analysing LD2 or Al dummy or LH2, please leave the target_mass_amu in the standard.kinematics as that of the proton, but when analysing the data with the pionLT script, specify the target used, as different targets will have different ranges in the cuts when integrating the missing mass peak. Refer to log entry: https://logbooks.jlab.org/entry/4005387 These instructions are given in the pionLT run plan.
Keep an eye on HMS DC chamber wire maps.

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 = Current Status =
 * Accelerator status:
+** Accelerator has only reliably been able to deliver 43uA of beam over the long weekend
+** Will limp along long like this until tomorrow
+** '''Maintenance day scheduled tomorrow - will hopefully improve things'''
 * Experiment status:
+** Over the weekend, eventually finished data taking for the Q2=6.00, W=2.40, x=0.55, high ϵ settings
+*** LD2+ right setting was skipped due to time constraints
+** Currently running Q2=6.00, W=3.19, x=0.39, high ϵ data taking, centre setting - Pion form factor point
+** Progress is slow, ~500 pions an hour (53k target)
+** '''Rotation to right setting (5.65 degrees) requires an access'''
+*** Can go to left setting first if timing for this is not favourable
 = Current Run Plan =
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 * [https://redmine.jlab.org/attachments/download/1494/10_549_GeV_Runplan.pdf PionLT Summer 2022 Run Plan]
 ** Now on page 66
-*** Q2=6.00, W=3.19, x=0.39, high ϵ data taking, centre setting - Pion form factor point
+*** Will be here for a while yet
-*** Progress is slow, ~500 pions an hour (53k target)
-** '''Rotation to right setting (5.65 degrees) requires an access'''
-*** Can go to left setting first if timing for this is not favourable
 * [https://hallcweb.jlab.org/wiki/index.php/PionLT_2022_Physics_Status Physics Status]
 = Notices in Effect for Shift Crew =