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T9/PS run Daily Briefings - 3PM

 
Daily briefing minutes

August 18 - 13-3-005

 Communications

- smooth data taking until this morning around 10; T10 requested hadron target w/o prior agreement with us and reduced our e rate by a factor 2. we agreed that they can have the hadron target between 1PM and 5PM today. We will use that time to setup the finger counters for e+ runs, to speed up setup for e+.
- this is the second time that a change affect our line w/o prior planning or notification from the control room; there is in general good support from the control room and no problem in giving us standard conditions, so shifters are encouraged to contact the control room if they spot any strange performance in the beam line, and ask for standard conditions

Online&DAQ Report


 OfflineReport

- Philippe on pileup measurements - comparison of new runs w and w/o pile-up inspector show difference wrt to first e scan runs; overall rate is the main difference (effect of pile-up inspector is not very strong); residual pile-up directly measured with a random trigger is at the level of 2%, and is correlated with the beam direction
Philippe on positron runs: e+ and e- runs compared; cuts to define no hits in the ACD and in a fiducial tkr volume; events selection for tracks pointing back to the MMS target. Effect of cuts on e+ and e- runs show a 6 sigma effect, but the overall number of residual events is 70 (out of 1M). MC predicts 200 annihilation events, but calculations must be done to know how many of such events would be seen by the CU and would pass the analysis cuts

 Program

- e scan completed last night
- photon program going on now and until sunday (see shift list for details)
- setup of finger counters for positron runs between now and 5PM when standard e target is back 

 Notes 


August 17 - 13-3-005

 Communications

- news from PS/SPS users meeting: the MICE experiment will not run after us, so we have a chance for an extension; the coordinators feel this is not necessary and hard to support; the maximum we can afford is to extend 1 day if really needed; on the other hand we need to organize for the transportation of our equipment to SPS, currently scheduled for wednesday 23; Luca to contact Ilias and discuss possibility of move on thursday if we are late with the program after the weekend
- next week cycle structure will change and will extend to 22s; possibility of 8 spill maximum on our beam line, excellent support from PS; on our side we need to make sure the spill gate from the ancillary follow this change (Monica B to check, should be fine as spill signal comes from accelerator)
- very low beam rate after this morning intervention, control room solicited to solve the problem, now working on that
- Luca working on schedule to fit all requested runs, detailed plan to come but feeling is that all will fit
- Erik provided 1 10x3x1cm counter for the e+ runs; Bari provided 2 1x1x0.2cm finger counters for the same purpose. 

...

 Communications

 - Magnet failure: MNP17 colling system failure at 1AM stopped data taking for several hours but no damage on hardware. Physics restarted after 2 hours w/o silicon tagger for CAL calibrations. Magnet repaired in the morning
- CU cooling system changes: CU/ISC cooling coil in the ISC base plate leaked: it was emptied and is now non available, we will rely on top cooling coil as no intervention is possible; the chiller was moved closer to the ISC to minimize thermalization of coolant with ambient through thermal exchange with the zone air, now chiller more efficient;  fan added to cool XY table motors. Please look at the temperature during your shift

 Online Report

 - DAQ sync studies going on
- CU: Ric investigating phasing errors

 Offline Report

 Francesco:
- pipeline  nicely running
- 1st 1000 evetns in SVAC ntuple duplicated  
Claudia: 
- offline monitor requires script to parse rcReport info and link to MC files (Navid working on that)
- MC and CU cooprdinate systems mismatch (check with Philippe) 
Dave:
- no CAL-HI triggers in last night data as  fhe values were saturated

 Program

 - Complete DAQ sync studies
- perform CU timing studies to optimize TACK (timing/script vs ext trigger manual delay)
- explore beam conditions 
- ACD calibrations (ideally 5gev p, if NA 5gev e) 
- CAL runs with e (Benoit)
- Tagger calibration start on 29 morning

Notes 

 - Fill elogbook
- Take your shifts and launch runs yourself 
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