Difference between revisions of "IAC 2-29-08"
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| Run # || Description | | Run # || Description | ||
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− | |431|| 0" from feedthrough | + | |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 ( | A)
Sense | 1500 | |
Field | -750 | |
Guard | 750 |
DC preamp at 5.6 Volts
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 |