Difference between revisions of "TGEMS"

From New IAC Wiki
Jump to navigation Jump to search
Line 23: Line 23:
  
 
== HV setting==
 
== HV setting==
 +
{|
 
| 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

Revision as of 22:37, 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.

[1], Media:01352098.pdf

TGEM Detector HV setting

[2]Media:Development_of_Tracking_Detectors_with_industrially_produced_GEM_Foils.pdf

[math]V_{GEM} = 0.103 \times V_{Drift}[/math]

[math]V_{GEM}[/math] is between ~[300V, 600V] for [math]CF_4[/math] and for [math]Ar/CO_2[/math] it is [200V, 370V];

[math]V_{Drift}[/math] voltage is ~[2900V, 5800V] ([1950V, 4000V]) for [math]CF_4[/math] ([math]Ar/CO_2[/math]).

TGEM detector.jpgTGEM detector 1.jpg

TGEM Detector TGEMfoil 1.jpgTGEM Detector TGEMfoil 2.jpgTGEM Detector TGEMfoil 3.jpg
TGEM Detector cathode.jpgTGEM Detector.jpg

Descriminated signals

HV setting

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


Descriminator setup

Go back