Detector Status

9 High-Purity Germanium Coaxial Photon Detectors
Detector Name Operating Bias (Volt)
Jan -3,000
Marsha -2,500
Cindy -2,000
Greg -3,000
Peter -2,000
Bobby -3,000
Alice -3,000
Carol -3,500
Mike -2,500

 

2 Low Energy Photon Spectrometers (LEPS)
Detector Name Operating Bias (Volt) 
Dave -3,000
Ann -1,700

 

HpGe Coaxial Detectors



 
 
 
 
 
 



Detector Name Jan
Date Purchased  Aug. 26, 1983
Serial No. 23-N-30VA
Detector Model No. GMX-25195-S
Crystal Diameter  (mm) 52.7
Crystal Length  (mm) 58.1
Relative Efficiency 25.6%
High Voltage Bias  (Volt) -3,000
Energy Resolution Measured from Last Use 2.53KeV @1.33MeV
Time Resolution 
5.8ns @511KeV
Last Maintenance  Hot Pump&Bake; Oct., 1994
Comments Microphonics, energy tails on both sides of the peak

 
 
 


Detector Name Marsha
Date Purchased  Aug. 7, 1984
Serial No. 24-N-20SB
Detector Model No. GMX-25195-S
Crystal Diameter (mm) 55.6
Crystal Length (mm) 55.1
Relative Efficiency 28.1%
High Voltage Bias (Volt) -2,500
Energy Resolution Measured from Last Use 2.23KeV @1.33MeV
Time Resolution
5.9ns @511KeV
Last Maintenance Pump&Bake; June, 2002
Comments

 
 


Detector Name Cindy
Date Purchased  Feb. 19, 1985
Serial No. 25-N1439B
Detector Model No. GMX-25195-S
Crystal Diameter (mm) 51.2
Crystal Length (mm) 56.5
Relative Efficiency 23.8%
High Voltage Bias (Volt) -2,000
Energy Resolution Measured from Last Use
Time Resolution
Last Maintenance  Pump&Bake; June, 2002
Comments

 
 


Detector Name Greg
Date Purchased  May 7, 1985
Serial No. 25-N-1495B
Detector Model No. GMX-25195-S
Crystal Diameter 52.2
Crystal Length 58.5
Relative Efficiency 23%
High Voltage Bias (Volt) -3,000
Energy Resolution Measured from Last Use 2.12KeV @1.33MeV
Time Resolution
Last Maintenance  Hot Pump&Bake; Sept., 1999
Comments

 
 
 


Detector Name Peter
Date Purchased  June 3, 1987
Serial No. 27-N-1935
Detector Model No. GMX-25195
Crystal Diameter (mm) 51.2
Crystal Length (mm) 54.9
Relative Efficiency 23%
High Voltage Bias (Volt) -2,000
Energy Resolution Measured from Last Use 2.22KeV @1.33MeV
Time Resolution
5.0ns @511KeV
Last Maintenance  Annealed; June, 2000
Comments

 
 
 


Detector Name Bobby
Date Purchased  Nov. 11, 1987
Serial No. 27-TN-30029B
Detector Model No. GMX-25195-P (PopTop)
Crystal Diameter (mm) 52.5
Crystal Length (mm) 59.6
Relative Efficiency 24.6%
High Voltage Bias (Volt) -3,000
Energy Resolution Measured from Last Use 1.88KeV @1.33MeV
Time Resolution
4.4ns @511KeV
Last Maintenance  Ortec repair; Dec, 2001
Comments

 
 
 


Detector Name Alice
Date Purchased  March 28, 1990
Serial No. 30-N20422A
Detector Model No. GMX-25190-S
Crystal Diameter (mm) 52.8
Crystal Length (mm) 49.6
Relative Efficiency 23%
High Voltage Bias (Volt) -3,000
Energy Resolution Measured from Last Use 1.86KeV @1.33MeV
Time Resolution
6.4ns @511KeV
Last Maintenance  Pump&Bake; June, 2002
Comments

 
 
 
 


Detector Name Carol
Date Purchased  Oct. 18, 1994
Serial No. 34-N40579A
Detector Model No. GMX-30190-S
Crystal Diameter (mm) 56.8
Crystal Length (mm) 53.8
Relative Efficiency 30.6%
High Voltage Bias (Volt) -3,500
Energy Resolution Measured from Last Use 1.93KeV @1.33MeV
Time Resolution
4.9ns @511KeV
Last Maintenance  Ortec repair; Nov., 2002
Comments

 
 
 


Detector Name Mike
Date Purchased  Oct. 18, 1994
Serial No. 34-N20949A
Detector Model No. GMX-30190-S
Crystal Diameter (mm) 55.6
Crystal Length (mm) 55.1
Relative Efficiency 28.1%
High Voltage Bias (Volt) -2,500
Energy Resolution Measured from Last Use 2.05KeV @1.33MeV
Time Resolution
5.4ns @511KeV
Last Maintenance  Pump&Bake; June, 2002
Comments

 
 

LEPS Detectors



 
 
 
 
 
 
 



Detector Name Dave
Date Purchased  March 11, 2002
Serial No. 42-E289
Detector Model No. GLP-36360/13
Crystal Diameter 36mm
Crystal Length 13mm
End Cap to Crystal
 7mm
High Voltage Bias (Volt) -3,000
Energy Resolution Measured from Last Use 1.03KeV @355KeV
Time Resolution
3.7ns @511KeV
Last Maintenance 
Comments

 
 
 
 


Detector Name Ann
Date Purchased  March 11, 2002
Serial No. 42-E275
Detector Model No. GLP-36360/13
Crystal Diameter 36mm
Crystal Length 13mm
End Cap to Crystal
 7mm
High Voltage Bias (Volt) -1.700
Energy Resolution Measured from Last Use 0.92KeV @355KeV
Time Resolution
4.2ns @511KeV
Last Maintenance 
Comments

 

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