GLAST LAT Project EM Tests, September 16, 2003

L. Wai 1

4:00 Meeting4:00 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

GLAST LAT Project EM Tests, September 16, 2003

L. Wai 2

EM Test StatusEM Test StatusSubsystem 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

TKRTACK delay optimization per layer – charge injection

occupancy vs TACK delay and vs thresholdNo

Done for (12,12) on all layers, 50 events per point. Need to do for (0,24) and (24,0).

TKREfficiency vs TACK delay and vs threshold – 5-layer cosmic

ray triggerNo

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!

CALci_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 YesTests being executed by L. Wai; configuration

files will be controlled in new I&T directory structure

CAL TACK delay optimization No

Scripts are prepared by NRL; need to run systematically and incorporate results into

baseline configuration

I&TGlobal TACK delay optimization for external scintillator

trigger- # hits vs delayNo

Script is being prepared and tested by J. Cohen-Tanugi