Page History

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, 8-1110

C

1.5Gev/n

10 50-1000Hz 500Hz

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

2519-2522

spill is 6s long. monitor shows counts vary between 50-500Hz.
nominal focus gives beam spot on CU ~cm - ok.
used magnet steerer to center spot on desired position (X=108,Y=-42) all

0 degree configuration
Tracker performance
Rate Scan 
5 hrs

nov 18 11-16 18 

C

1.5Gev/n

10 100-100Hz-1KHz 200Hz

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)

2527-2534

250Kevts at ~200Hz
180Kevts at ~100Hz

CAL studies:
thierry(cuts,\\, Evslayer, quenching)
philippe: (Evslayer,Evslayervstime)
ACD: Eric(PHvstrackpos)
TKR: Leon (cuts ,cluster_width)

30 degree

nov 18

CAL calibration comparison with previous results
2 hrs

nov 18 18-20

C

1.5GeV/n

100Hz

260Hz

nominal 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

, BT54

2535-2537 for beam tuning
2539-2545

660Kevts

-60 degree

nov 18  nov 18 20-21

C

1.5GeV/n

100Hz 270Hz

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

, BT51, BT54, BT56

2550-2553

645Kevts

beam through tower3 side, no ACD tile; BT50, BT51 have a CNO trigger engine which is not satisifed - most events are therefore read with the std engine auto-range, ZS associated with any other trigger than CNO

0 degree  

nov 18 7PM nov 18 21 - nov 19 2

C

1.5GeV/n

270Hz 100Hz

nominal

BT3,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 or twr 3 configuration?

nov 19 2-7

C

1.5GeV/n

100Hz

nominal

BT50, BT51, BT54

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

nicola

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

2572-2576

2572 with BT3 (TKR only trigger) - 250Kevts
2573-2576 550Kevts
2576 (120Kevts) with special readout schema (half layers readout all left, half all right) and very low rate (5-10Hz) as a consequence of accelerator settings

noticed larger fraction of TEM errors (from 2% to 3.5%) - probably due to higher rate  in first part of spill when getting beam back from therapy
special tkr readout configuration significantly reduces number of TKR FIFO FULL errors

0 degree Xe

nov 19

Xe

1GeV/n

200hZ

nominal

BT50-BT51

2577-2581

played with fifo settings to reduce fifo full errors
collect ~600K

2577 very high rate (10KHz)
2578 steering magnet to center beam
2579 mostly periodic, very few Xe triggers
2580 unstable beam
2581 ext trigger

0 degree Xe on Al target

nov 19 4.30AM

Xe

1GeV/n

200Hz-1KHz

nominal

BT53 with different FIFO full settings
BT2
BT52

2582-2594

attempt to get different ions by shooting beam through a target
~1Mevts
attempt to get different ions by shooting beam through a target
wrong energy in the database (1.5 instead of 1)

2582 1.6KHz rate
2583 156Hz rate
rate >1KHz after 2590

scintillation measurement in CDE

nov 19

Xe
C

1GeV/n
1.5GeV/n

200Hz

nominal

NA

NA - contact Benoit to get data

place a CAL cristal in front of CU and record signal pulse
measurement performed with Xe beam with and w/o target and C beam

clear saturated signal from Xe, secondary peaks visible

charge injection with beam

nov 19

Xe
C   

1GeV/n

Charge injection in CAL with beam

nov 19

C
1.5GeV/n

10 600-1000Hz

far and near focus

BT50

check pedestal restoration with beam ON, explore different beam rates; can use existing CalibGenCAL script

sasha

Charge injection in TKR with beam

nominal

CalibGen

Xe beam: 2595-2607
C beam: 2609-2621

performed with beam while taking scintillation measurement

Very low rate

nov 19

C

1.5GeV/n

10-1000Hz

far and near focus

BT50

as low as possible

nominal

BT58

2627

~15Kevts
~10Hz during spill
external trigger only, 4-rng, NZS

0 degree

check rate effect in TKR signal; must identify CI script and plots to monitor

leon, TKR team

scintillation measurement in CDE

nov 19

C , Xe?

1.5GeV/n

100Hz

NA

place another detector upstream and monitor signal pulse

~600Hz

nominal

BT50,BT51,BT53

compare with runs taken before Xe beam

not performed