Difference between revisions of "Metalica TestPulseoutput 12-21-07"

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The CAEN N470 power supply was used to establish voltages onthe drift chambers.  A SHV tee was used to allow a single HV channel from the CAEN power supply to power both chambers in parallel.  The Drift chamber voltages settings were set according to the table below.  The current column indicates the total current drawn from both chambers.
 
The CAEN N470 power supply was used to establish voltages onthe drift chambers.  A SHV tee was used to allow a single HV channel from the CAEN power supply to power both chambers in parallel.  The Drift chamber voltages settings were set according to the table below.  The current column indicates the total current drawn from both chambers.
 
{| border="1"  |cellpadding="20" cellspacing="0  
 
{| border="1"  |cellpadding="20" cellspacing="0  
|colspan= "2" | HV settings  
+
|colspan= "3" | HV settings  
 
|-
 
|-
| Wire ||  Volts || current
+
| Wire ||  Volts || current (<math>\mu</math>A)
 
|-
 
|-
 
|Sense ||  1500 || 19
 
|Sense ||  1500 || 19

Revision as of 22:47, 21 December 2007

12/21/07

The scope pictures show the PREamp output on Channel 2 given the input pulse shown on Channel 1 that is input directly onto the sense wire.

Metalica 40mVpulserInputOnSenseWire PostampOuput 12-21-07.jpg
Metalica 60mVpulserInputOnSenseWire PostampOuput 12-21-07.jpg


The CAEN N470 power supply was used to establish voltages onthe drift chambers. A SHV tee was used to allow a single HV channel from the CAEN power supply to power both chambers in parallel. The Drift chamber voltages settings were set according to the table below. The current column indicates the total current drawn from both chambers.

HV settings
Wire Volts current ([math]\mu[/math]A)
Sense 1500 19
Field -800 19
Guard 800 0


Metalica HV1500-800 Sensewire PostampOuput 12-21-07.jpg
Metalica HV1500-800 Sensewire PostampOuput 12-21-07 A.jpg