Difference between revisions of "TGEMS"
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| − | 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. | + | |
| + | [[Neutron_TGEM_Detector_Abdel]] | ||
| + | |||
| + | 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 (we have 0.5 diameter boards in stock). | ||
| + | |||
| + | PCboard spacing = 1.5 - 2 mm (distance between the centers of 2 holes in parallel layers is 1mm). | ||
[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1352098], [[Media:01352098.pdf]] <br> | [http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1352098], [[Media:01352098.pdf]] <br> | ||
=TGEM Detector HV setting= | =TGEM Detector HV setting= | ||
| + | |||
[http://arxiv.org/abs/0707.2543][[Media:Development_of_Tracking_Detectors_with_industrially_produced_GEM_Foils.pdf]]<br> | [http://arxiv.org/abs/0707.2543][[Media:Development_of_Tracking_Detectors_with_industrially_produced_GEM_Foils.pdf]]<br> | ||
| − | |||
| − | [[Image:TGEM_detector.jpg|300px]][[Image:TGEM_detector_1.jpg|300px]] | + | :::<math>V_{GEM} = 0.103 \times V_{Drift}</math><br> |
| + | |||
| + | <math>V_{GEM}</math> is between ~[300V, 600V] for <math>CF_4</math> and for <math>Ar/CO_2</math> it is [200V, 370V];<br> | ||
| + | |||
| + | <math>V_{Drift}</math> voltage is ~[2900V, 5800V] ([1950V, 4000V]) for <math>CF_4</math> (<math>Ar/CO_2</math>).<br> | ||
| + | |||
| + | [[Image:TGEM_detector.jpg|300px]][[Image:TGEM_detector_1.jpg|300px]]<br> | ||
| + | |||
| + | [[Image:TGEM_Detector_TGEMfoil_1.jpg|200px]][[Image:TGEM_Detector_TGEMfoil_2.jpg|200px]][[Image:TGEM_Detector_TGEMfoil_3.jpg|200px]]<br> | ||
| + | [[Image:TGEM_Detector_cathode.jpg|300px]][[Image:TGEM_Detector.jpg|300px]]<br> | ||
| + | |||
| + | = Descriminated signals= | ||
| + | |||
| + | == Test Setup 1== | ||
| + | {| 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 | ||
| + | |- | ||
| + | | 3000 || 1756 || 1657 || 1652 || 1273 | ||
| + | |}<br> | ||
| + | |||
| + | |||
| + | 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 | ||
| + | |||
| + | {| border="1" |cellpadding="20" cellspacing="0 | ||
| + | | 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 | ||
| + | |}<br> | ||
| + | |||
| + | |||
| + | [[Image:Pulse_from_THGEMD_strips_and_CFD_HV3000Volts_11-9-08.png|300px]][[Image:Pulse_from_THGEMD_strips_and_nothing_from_CFDisc_HV3000Volts_11-9-08.png|300px]]<br> | ||
| + | |||
| + | [[Image:Noise_from_THGEMD_strips_and_pulse_from_CFD_HV3000Volts_11-9-08.png|300px]][[Image:Noise_from_THGEMD_strips_and_no_pulse_CFD_HV3000Volts_11-9-08.png|300px]]<br> | ||
| + | |||
| + | = THGEM see through detector= | ||
| + | |||
| + | [[File:A01072012_IonChamberDemo.jpg | 200 px]] | ||
| + | |||
| + | |||
| + | [[File:B01072012_IonChamberDemo.jpg | 200 px]] | ||
| + | |||
| + | |||
| + | [[File:C01072012_IonChamberDemo.jpg | 200 px]] | ||
| + | |||
| + | [[File:D01072012_IonChamberDemo.jpg | 200 px]] | ||
| + | |||
| + | |||
| + | =GEM fission chamber tests= | ||
| − | + | [[GEM_Fission_IAC_11082013]] | |
[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] | ||
Latest revision as of 15:55, 8 November 2013
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 (we have 0.5 diameter boards in stock).
PCboard spacing = 1.5 - 2 mm (distance between the centers of 2 holes in parallel layers is 1mm).
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 |
THGEM see through detector
