Transcript 16:00 Meeting

GLAST LAT Project
EM Tests, September 16, 2003
4:00 Meeting
Schedule
 TKR TEM will be packed on Monday morning for shipment
Tests and Analysis
• EM Test Status – L. Wai
• Analysis of CAL Data – X. Chen
L. Wai
1
GLAST LAT Project
EM Tests, September 16, 2003
EM Test Status
Subsystem
Test Description
Req’d for
Data Taking
Status
TKR
TOT Enabled Tests – Errors vs threshold and vs TACK delay
No
Done by J. Cohen-Tanugi during swing shift.
TKR
Bad Channel List and Data Mask
Yes
Johan is generating this
TKR
TACK delay optimization per layer – charge injection
occupancy vs TACK delay and vs threshold
No
Done for (12,12) on all layers, 50 events per
point. Need to do for (0,24) and (24,0).
TKR
Efficiency vs TACK delay and vs threshold – 5-layer cosmic
ray trigger
No
Need to run 100, 1000 events, layer by layer.
Limit range of TACK; step every 5 units.
TKR
Error vs threshold test – 6-layer trigger w/ TOT enabled
No
Need significantly higher statistics
CAL
Trigger with zero-suppression turned off
Yes
Charge injection works but cosmics fails; error
may be introduced in data transfer from VME
crate to PC; will install direct ethernet cable to
avoid SLAC LAN – problem solved!
CAL
ci_singlex16 test with different HE gain settings: gain =
0,8,9,10,11,12,13,14,15. (while LE gain should be always
nominal = 5)
No
Test executed by L. Wai during day shift
CAL
CAL Configuration Files
Yes
Tests being executed by L. Wai; configuration
files will be controlled in new I&T directory
structure
CAL
TACK delay optimization
No
I&T
Global TACK delay optimization for external scintillator
trigger- # hits vs delay
No
L. Wai
Scripts are prepared by NRL; need to run
systematically and incorporate results into
baseline configuration
Script is being prepared and tested by J. CohenTanugi
2