Difference between revisions of "IAC 2-29-08"

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| Run # || Description
 
| Run # || Description
 
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|431||  0" from feedthrough  
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|431||  0" from feedthrough , Sense wire at 1450 Volts
 +
|-
 +
|432||  0" from feedthrough , Sense wire at 1500 Volts
 
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Revision as of 16:30, 29 February 2008

Leap Day run

DC setup

This time the Sense wire HV is set to 1500 to start

90/10 ArCo2

HV settings
Wire Volts current ([math]\mu[/math]A)
Sense 1500
Field -750
Guard 750

DC preamp at 5.6 Volts


Go Back

Beam Line Configuration

A 1/4 inch diameter collimater is placed in the experimental cell just after a Helium bag inserted in the wall. A 2 cm thick scintillator is place over the beam downstream side of the collimator aligned using a laser. A 1 kG magnet placed after the drift chambers deflects charged particles onto a large scintillator paddle. A coincidence is required between the two scintillators.


Increased beam energy from 10 MeV to 12 MeV due to expected energy loss in front scintillator.

Runs

Run # Description
431 0" from feedthrough , Sense wire at 1450 Volts
432 0" from feedthrough , Sense wire at 1500 Volts