GSI program

Test multiple trigger engines prior to beam

nov 17

NA

NA

NA

NA

all BTs

change CNO thresholds, periodic frequency

DAQ team

Monitor beam rate and conditions

nov 18, 8-11

C

1.5Gev/n

10-1000Hz

play with focus to change beam intensityon CU

BT53

verify count rate on external trigger, set it to ~100Hz.
verify beam spot on CU with nominal focus (should be ~cm), and determine settings for focus on CU (looking at beam spot on CU). Record settings.
Vary beam settings as to have rates between 10 and 1000Hz. Verify that CU is aligned as expected and beam position is the required one for TKR, ACD, CAL - if not move the table

all

0 degree configuration
Tracker performance
Rate Scan 
5 hrs

nov 18 11-16

C

1.5Gev/n

10-100Hz-1KHz

nominal

BT50, BT51, BT54

per BT type collect:
1/2 hr at 100Hz(should be 45K)
10 min at 1KHz (should be 150K)
1 hr at 10Hz (should be 9K)

verify that multiple trigger engines work as expected
verify CU timing
check for CAL pedestal drift effect with BT54 (high periodic trigger); change periodic prescaler if necessary

Tracker saturation 
2 hrs

nov 18 16-18

C

1.5Gev/n 

10-1KHz

nominal + focus on CU

BT3

take runs with TKR trigger only vs beam rate (10-100-1K)

CAL calibration comparison with previous results
2 hrs

nov 18 18-20

C

1.5GeV/n

100Hz

far and near focus

BT50, BT51

move CU as to have beam on tower1 to avoid TKR in the line
collect 1/2hr per BT type

CAL team

30 degree

nov 18 20-21

C

1.5GeV/n

100Hz

nominal

BT50

move CU at 30 degrees, take some events to check ACD CNO threshold for new hit tiles

30 degree configuration
Tracker performance
Rate Scan
5 hrs

nov 18 21 - nov 19 2

C

1.5GeV/n

100Hz

nominal

BT50, BT51, BT54

per BT type collect:
1/2 hr at 100Hz(should be 45K)
10 min at 1KHz (should be 150K)
1 hr at 10Hz (should be 9K)
verify that multiple trigger engines work as expected
verify CU timing
check for CAL pedestal drift effect with BT54 (high periodic trigger); change periodic prescaler if necessary

60 degree  configuration Tracker performance
Rate Scan
5 hrs

nov 19 2-7

C

1.5GeV/n

100Hz

nominal

BT50, BT51, BT54

per BT type collect:
1/2 hr at 100Hz(should be 45K)
10 min at 1KHz (should be 150K)
1 hr at 10Hz (should be 9K)
verify that multiple trigger engines work as expected
verify CU timing
check for CAL pedestal drift effect with BT54 (high periodic trigger); change periodic prescaler if necessary

0 angle, twr 3 (no ACD tile)

nov 19 7-12

C

1.5GeV/n 

100Hz

nominal

BT50, BT51, BT54

per BT type collect:
1/2 hr at 100Hz(should be 45K)
10 min at 1KHz (should be 150K)
1 hr at 10Hz (should be 9K)
verify that multiple trigger engines work as expected
verify CU timing
check for CAL pedestal drift effect with BT54 (high periodic trigger); change periodic prescaler if necessary

charge injection with beam

nov 19 12-13

C

1.5GeV/n

100Hz

nominal

CalibGen,

keep beeam on

Energy scan

nov 19

C,Xe

600MeV/n - 1.5GeV/n in steps

10-1000Hz

far and near focus

BT51

attempt to simulate different ions by varying ionization energy

fabio

Secondary ions with target

nov 19

Xe

1.5GeV/n

10-1000Hz

far and near focus

BT50

attempt to get different ions by shooting beam through a target - need verification with GSI people

benoit

scintillation measurement in CDE

nov 19

Xe

1.5GeV/n

100Hz

NA

place another detector upstream and monitor signal pulse - move measurement before switching to Xe if C is wanted

benoit