Difference between revisions of "TGEMS"
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= Descriminated signals= | = Descriminated signals= | ||
| − | == | + | == Test Setup 1== |
{| border="1" |cellpadding="20" cellspacing="0 | {| border="1" |cellpadding="20" cellspacing="0 | ||
| Cathode HV (Volts) || First THGEM foil(Volts) || Second THGEM foil(Volts) || Third THGEM foil(Volts) || Third THGEM foil current <math>\mu</math>A | | Cathode HV (Volts) || First THGEM foil(Volts) || Second THGEM foil(Volts) || Third THGEM foil(Volts) || Third THGEM foil current <math>\mu</math>A | ||
| Line 29: | Line 29: | ||
|}<br> | |}<br> | ||
| − | |||
| − | + | I used 2 Ortec timing amps to integrate the signal and amplify more than what we did for the standard GEM. | |
| − | I used 2 timing amps to integrate the signal and amplify more | ||
The following setttings were | The following setttings were | ||
Revision as of 20:58, 11 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
Test Setup 1
| 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 |
I used 2 Ortec timing amps to integrate the signal and amplify more than what we did for the standard GEM.
The following setttings were
| Parameter | Dial setting |
| Timing Amp1 | x20 |
| Timing Amp1 Integration | 50 ns |
| Timing Amp2 | x4 |
| Timing Amp2 Integration | 20 ns |
| CFD Threshold | 5.22 |
| CFD Threshold ULD | 5.28 |
| CFD Threshold LLD | 3.04 |
