Difference between revisions of "Forest PMTs"

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=Hamamatsu R4125HA=
 
=Hamamatsu R4125HA=
  
[[Image:Hamamatsu_R4125HA_PMT_Pinout.jpg | 300 px]]
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[[Image:Hamamatsu_R4125HA_PMT_Pinout.jpg | 300 px]][[Image:Hamamatsu_R4125HA_PMT_Socket.png | 300 px]][[Image:Hamamatsu_R4125HA_VoltDiv.png | 300 px]]
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[[Image:Hamamatsu_R4125HA_FactoryVoltDiv.png | 300 px]]
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{|border="1"  |cellpadding="20" cellspacing="0  
 
{|border="1"  |cellpadding="20" cellspacing="0  
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|Amplifier ||C7319 C6438 C5594 M7279 M8879
 
|Amplifier ||C7319 C6438 C5594 M7279 M8879
 
|}
 
|}
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= HS Student 2009 summer project=
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==Dynode chain HV design==
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The figure below has several mistakes in ther region near the capacitors.  The Hamamatsu drawing scanned in above is correct..
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 +
1.) There should be no line connecting R11 to the anode.  The anode goes from the socket (Pin 5) directly to the output connector.  R11 should go to ground as shown.
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 +
2.) Capacitors C1 and C2 should not be going to ground.  C1 should be soldered across Resistor R9( in parallel with R9) and C2 should be soldered across Resistor R10.
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 +
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[[File:R4125HA_HSstudent2009_HVdivider_Design.png | 200 px]]
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==Base design==
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[[File:R4125HA_HSstudent2009_Base_Design.png | 200 px]]
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[[File:R4125HA_HSstudent2009_Base_Design_cad.dwg]]

Latest revision as of 22:31, 19 November 2009

Hamamatsu R4125HA

Hamamatsu R4125HA PMT Pinout.jpgHamamatsu R4125HA PMT Socket.pngHamamatsu R4125HA VoltDiv.png


Hamamatsu R4125HA FactoryVoltDiv.png


Specifications
Part Number R4125
Type Head on
Size 19mm
ActiveDia/L 15mm
Min [math]\lambda[/math] 300nm
Max [math]\lambda[/math] 650nm
Peak Sens. 420nm
Cathode Radiant Sensitivity 90mA/W
Window Borosilicate
Cathode Type Bialkali
Cathode Luminous Sensitivity 115mA/lm
Cathode Blue Sensitivity Index 11
Anode Luminous Sensitivity 100A/lm
Gain 8.7E+05
Dark Current after 30 min. 10nA
Rise Time 2.5ns
Transit Time 16ns
Transit Time Spread 0.85ns
Number of Dynodes 10
Applied Voltage 1500V
Multi Anode N
Magnetic Shield E989-02
Socket Bare E678-12L
Socket + bleeder assy. E974-19
Power Supply C4840 series
Amplifier C7319 C6438 C5594 M7279 M8879

HS Student 2009 summer project

Dynode chain HV design

The figure below has several mistakes in ther region near the capacitors. The Hamamatsu drawing scanned in above is correct..

1.) There should be no line connecting R11 to the anode. The anode goes from the socket (Pin 5) directly to the output connector. R11 should go to ground as shown.

2.) Capacitors C1 and C2 should not be going to ground. C1 should be soldered across Resistor R9( in parallel with R9) and C2 should be soldered across Resistor R10.


R4125HA HSstudent2009 HVdivider Design.png

Base design

R4125HA HSstudent2009 Base Design.png

File:R4125HA HSstudent2009 Base Design cad.dwg