The official data taking period was from SEP 27,2003 to OCT12, 2003 when CAL and TKR were integrated into the single bay grid.
The Cosmic Ray Data was taken in the following configurations
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CONFIGURATION |
EXPERIMENTAL SET-UP |
TRIGGER |
CAL |
TKR |
COMMENTS |
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Default |
tower in vertical orientation scintillator telescope with 50 cm of Pb below CAL |
CAL-LO |
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT disabled |
|
|
A |
tower in vertical orientation no Pb |
CAL-LO |
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT disabled |
Several runs with TACK delay at different values |
|
B |
tower in vertical orientation No Pb |
TKR 3-IN_A_ROW
|
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT disabled |
Several runs with TACK delay at different values |
|
C |
tower in vertical orientation scintillator telescope with 50 cm of Pb below CAL |
TKR 3-IN_A_ROW
|
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT disabled |
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|
D |
tower in horizontal orientation
|
TKR 3-IN_A_ROW
|
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT enabled |
Several runs with TACK delay at different values |
|
E |
tower in vertical orientation No Pb |
EXTERNAL (scintillator tiles) |
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT disabled |
Several runs with TACK delay at different values |
|
F |
tower in vertical orientation scintillator telescope with 50 cm of Pb below CAL |
EXTERNAL (scintillator tiles)
|
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT disabled |
Several runs with different external trigger delays and fixed nominal TACK delays for CAL and TKR |
The Van de Graaff Data was taken in the following configurations
Low energy photons (~20 MeV) were taken from OCT 7 to OCT 9, 2003
|
CONFIGURATION |
EXPERIMENTAL SET-UP |
TRIGGER |
CAL |
TKR |
COMMENTS |
|
|
|
|
|
|
|
|
Default |
tower in horizontal orientation photons impinging on top face of tracker
|
TKR 3-IN_A_ROW
|
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT enabled |
There is a steel window (~7% radiation lengths) at the end of the VDG pipe to keep the vacuum |
|
A |
tower in horizontal orientation photons impinging on top face of tracker added a 28% Pb shield after the beam pipe
|
TKR 3-IN_A_ROW
|
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT enabled |
There is a steel window (~7% radiation lengths) at the end of the VDG pipe to keep the vacuum |
|
B |
tower in horizontal orientation photons impinging on bottom of tracker ~ 135 deg from vertical
|
TKR 3-IN_A_ROW
|
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT enabled |
There is a steel window (~7% radiation lengths) at the end of the VDG pipe to keep the vacuum |
|
C |
tower in horizontal orientation photons impinging on bottom of tracker ~ 135 deg from vertical
|
CAL-LO
|
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT enabled |
|
|
D |
tower in vertical orientation photons impinging on the side of CAL (covering about 2-3 crystal layers)
|
CAL-LO
|
nominal Thresholds (~8 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT enabled |
|
|
E |
tower in vertical orientation photons impinging on the side of CAL (covering about 2-3 crystal layers)
|
CAL-LO
|
Low Thresholds (~4 MeV/crystal) Non zero suppression 4 range readout TACK delay 60 x 50 ns = 3000ns |
nominal Thresholds (~0.3 MIPs = DAC 30 range 0) TACK delay 0 x 50 ns = 0ns TOT enabled |
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