Physics Shift Report¶

Start Date: 23rd February
End Date: 27th February
Start Run: 07620
End Run: 07652
Physics shifter: Francois Drielsma

Summary¶

23/02: First day of data taking was divided in several activities

• Beam bump tuning with H.N. and D. Adams in the morning
• Shifter training from 2PM to 3:30PM
• TOF calibration data taking until 10PM (no DS, data looks fine from onRec), reached 500k TOF1 trig.

Run number	Run type	Mom. setting	Trigger condition	Nbr. of spills	Int. part. tr.
7623	Pion +	200 MeV/c	TOF1	7133	175664
7624	Pion +	200 MeV/c	TOF1	6140	166314
7625	Pion +	200 MeV/c	TOF1	6316	161340

24/02: Second day of data taking

• FC being bolted to the SSs, evacuation of the absorber cavity (all day)
• /!\ No reference run taken !
• Resume data taking operations, alignment data, reached 550k out of 1M

Run number	Run type	Mom. setting	Trigger condition	Nbr. of spills	Int. part. tr.
7626	Pion +	300 MeV/c	TOF1	3626	166015
7627	Pion +	300 MeV/c	TOF1	3669	168548
7628	Pion +	300 MeV/c	TOF1	6273	249089

25/02: Third day of data taking

• Work in the hall during the day to evacuate the FC cavity
• Resume alignment data taking at 7PM, reached 750k integrated total particle triggers for the first setting, 23k for the second setting.
• /!\ Proton absorber too thin for all the runs that day (29 mm instead of 82 mm), must be set manually. Might be some proton contamination in the beam up to TOF1 at most (5 cm of PVT in TOF0).

Run number	Run type	Mom. setting	Trigger condition	Nbr. of spills	Int. part. tr.
7635	Pion +	300 MeV/c	TOF1	3716	224796
7636	Muon +	200 MeV/c	TOF1	5763	22728

26/02: Fourth day of data taking

• Work in the hall during the day for the FC and setting up the DS power supply
• Resume alignment data taking at 4PM, reach 50k for the second setting (very poor rate without DS), 150k for the third setting.

Run number	Run type	Mom. setting	Trigger condition	Nbr. of spills	Int. part. tr.
7639	Muon +	200 MeV/c	TOF1	6014	27685
7640	Pion +	450 MeV/c	TOF1	3266	40194
7641	Pion +	450 MeV/c	TOF1	8889	111295

27/02: Fifth day of data taking

• Resume alignment data taking at 4PM, reached 150k for the second setting and 250k for the third setting (complete).
  */!\ Wrong tag for 7649, it is 450 pions and not 6pi-240

Run number	Run type	Mom. setting	Trigger condition	Nbr. of spills	Int. part. tr.
7646	Pion +	450 MeV/c	TOF1	2524	24253
7647	Muon +	200 MeV/c	TOF1	1802	8003
7648	Muon +	200 MeV/c	TOF1	4462	20441
7649	Pion +	450 MeV/c	TOF1	2567	35197
7650	Muon +	200 MeV/c	TOF1	13566	61760
7651	Pion +	450 MeV/c	TOF1	2477	34223
7652	Muon +	200 MeV/c	TOF1	5395	27878

Grand total of alignment data collected:

Run type	Mom. setting	Trigger condition	Nbr. requested	Int. part. tr.
Pion +	300 MeV/c	TOF1	1000k	750k
Muon +	200 MeV/c	TOF1	250k	150k
Pion +	450 MeV/c	TOF1	250k	250k
Muon +	350 MeV/c	TOF1	250k	0k

Run documentation¶

Elog¶

• Entries for each shift and major issues/faults. No problems found, very thorough.
• Check list filled on a regular basis, good practice

Run Condition Summary Spreadsheet/CDB¶

• All of the information recorded in the Summary Spreasheet
• Run 7621 (calibration run) missing in the CDB

Analysis¶

• No particular analysis requested by the measurement coordinator
• The alignment analysis needs a resurvey of the downstream PID detector to take place.
• Amount of statistics collected for the TOF calibration from the 7623-7625:
  
  
  

Reconstruction Quality¶

• The physics devil processed the files successfully and reported a reasonable number of unpacking errors (< 0.1%)
• The files have been properly uploaded to the grid
• The on line reconstruction plots don't reveal any DAQ issues, albeit a noticeable inefficiency in tracker 1 station 1. Might be solved by updating the cabling file, TBD.