Difference between revisions of "TGEMS"
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| CFD Threshold LLD || 3.04 | | CFD Threshold LLD || 3.04 | ||
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| + | [[Image:Noise_from_THGEMD_strips_and_pulse_from_CFD_HV3900Volts_11-9-08.png|300px]][[Image:Noise_from_THGEMD_strips_and_no_pulse_CFD_HV3900Volts_11-9-08.png|300px]]<br> | ||
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[http://www.iac.isu.edu/mediawiki/index.php/User_talk:Tforest Go back] | [http://www.iac.isu.edu/mediawiki/index.php/User_talk:Tforest Go back] | ||
Revision as of 22:53, 10 October 2008
TGEMS : defined as GEM detector which use thick PCboard (0.4 mm thick) size GEM preamplifiers with hole diameters between 0.5 and 1 mm.
PCboard spacing = 1.5 - 2 mm.
TGEM Detector HV setting
[2]Media:Development_of_Tracking_Detectors_with_industrially_produced_GEM_Foils.pdf
is between ~[300V, 600V] for and for it is [200V, 370V];
voltage is ~[2900V, 5800V] ([1950V, 4000V]) for ().
Descriminated signals
HV setting
| Cathode HV (Volts) | First THGEM foil(Volts) | Second THGEM foil(Volts) | Third THGEM foil(Volts) | Third THGEM foil current A |
| 3000 | 1756 | 1657 | 1652 | 1273 |
Descriminator setup
I used 2 timing amps to integrate the signal and amplify more then the basic GEM.
The following setttings were
| Parameter | Dial setting</math>A |
| Timing Amp1 | 20 |
| Timing Amp1 Integration | 50 ns |
| Timing Amp2 | 4 |
| Timing Amp2 Integration | 20 ns |
| CFD Threshold | 5.22 |
| CFD Threshold ULD | 5.28 |
| CFD Threshold LLD | 3.04 |
