Difference between revisions of "CLAS12R1 CosmicTestStand"
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[[File:CLAS12CosmicTestStand1.png| 200 px]] | [[File:CLAS12CosmicTestStand1.png| 200 px]] | ||
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| + | {|border="1" | cellpadding="20" cellspacing="0 class="wikitable" | ||
| + | |- | ||
| + | | Label|| Distance (cm) | ||
| + | |- | ||
| + | |<math>T_1</math> || 4 || | ||
| + | |- | ||
| + | |<math>T_2</math> || 4 || | ||
| + | |- | ||
| + | |<math>T_{DC}</math> || 27.3 || | ||
| + | |- | ||
| + | |d_ || 4 || | ||
| + | |- | ||
| + | |} | ||
=Scintillators= | =Scintillators= | ||
Revision as of 19:20, 14 January 2013
Apparatus
| Label | Distance (cm) | |
| 4 | ||
| 4 | ||
| 27.3 | ||
| d_ | 4 |
Scintillators
Two scintillators are placed on top and below the drift chamber
These scintillators have PMTs on both ends allow an initial position to be determined according to the time difference between the PMT hits.
Below is the calibration for Detector M and Detector G
HV(M1) = -1602 Volts
HV(M2) = -1750 Volts
Normalized_and_BKG_subtracted_data_for_Det_M
M2 PMT is not making good contact with the light guide thus output pulses are below 300 mV, Pulses get bigger and more frequent if you push the PMT onto the scintilator.
HV(G1)= -1700 Volts HV(G2)= -1650 Volts
Normalized_and_BKG_subtracted_data_for_Det_G
G1 pulses were below expectations ( below 300 mV?) perhaps the PMT is not capturing the light.
M1 = TDC80
M2 = TDC81
G1 = TDC84
G2 = TDC86
Trig = TDC 95
M1 = TDC112 M2 = TDC113 G1 = TDC116 G2 = TDC118 Trig = TDC 127
Trigger Matching is ON
resolution = 100 ps