Test Beam VPT II
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
Second Irradiation (June 14th to 21st )
A Laser Monitoring Analysis
First Irradiation (June 4th to 8th )
Recovery followed by Laser
VPT flashed continuously by laser at 100Hz
E0’ matrix
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
Round #2
• Rawz files sent to Monitoring farm prototype• Quality control• Corrections:
– non linearity– Test pulses (mgpa and mem)– Laser Width
• MATACQ ready for use– Temperature (delayed)
• Irradiation & Calibration Analysis– Hodoscope not used
Data treatment
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
Quasi Real Time
Laser intensity control
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
During irradiation #2
Start irradiation
6%
Laser width control
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
During irradiation #2
Irradiation & recovery XTAL #21
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
BCTP
Chan#4
R slope: XTAL #21
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
BCTP
Chan#4
Irradiation & recovery XTAL #5
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#20
R slope: XTAL #5
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#20
Irradiation & recovery XTAL #24
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#1
R slope: XTAL #24
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#1
Irradiation & recovery XTAL #15
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#10
R slope: XTAL #15
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#10
Irradiation & recovery XTAL #20
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#9
R slope: XTAL #20
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#9
Irradiation & recovery XTAL #13
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#12
R slope: XTAL #13
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#12
Irradiation & recovery XTAL #3
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#22
R slope: XTAL #3
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
SIC
Chan#22
Irradiation & recovery XTAL #12
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
BCTP
Chan#13
R slope: XTAL #12
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
BCTP
Summary
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
R measurements
XTal # Channel# Total dose Loss (e-)
21 4 9.5 6% 1.56
12 13 2.8 2.6% 1.58
5 20 4.8 5% 1.08
24 1 7.5 4% 1.0
15 10 4.9 2% 1.
20 9 5.1 3.5% 1.
13 12 5.2 8.5% 1.
3 22 3.1 7% 1.04
Loss e- versus dose
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
XTal#21XTal#5
XTal#24XTal#15
Neighbour XTALS
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
R measurements
XTal # Channel# Total dose Loss (e-)
18 7 ? 1% 0.7
8 17 ? 1.5% 0.95
14 11 ? 1% 0.85
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
Dispersion of
Conclusions
“H4 test beam meeting” June 23rd 2004 / Patrice VERRECCHIA
Bogo Crystals have fully recovered the first irradiation
Irradiation#1 similar to irradiation#2 (offsets to be understand)
SIC Crystals recover very slowly
Mismatch Laser/Electron during recovery
Drop (Irradiation#2) < Drop ( irradiation#1)
XTAL#15
~ 1.0
Dispersion = 11% (compare to 6% for bogo)OK
