Difference between revisions of "PosRun 10 14 2013"
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| 6498 || min s || same as above except: -500 Volts, magnet out | | 6498 || min s || same as above except: -500 Volts, magnet out | ||
|- | |- | ||
| − | | 6499 || min s || same as above except: -700 Volts | + | | 6499 || min s || same as above except: -700 Volts, very similar ADC spectrum for magnet in |
|} | |} | ||
Revision as of 16:21, 14 October 2013
Run list
Scaler channel #2 counts the number of beam pulses
Detector 4 is Beam Left and in ADC channel 7, Ortec Dual Spec amp set to course=10, fine=39, Canberra CFD set to 85 mV lower threshold
Detector 1 is Beam Right and in ADC channel 3, Ortec Dual Spec amp set to course=20, fine=10, Canberra CFD set to 70 mV lower threshold
| Run # | Run Duration (s) | Configuration |
| 6488 | min s | 2->60Hz rep rate, Looking at NaI in shielded cell at -600 Volts, Magnet on Accelerator side deflects electrons, Tungsten target is out, triggering only on the beam gate and looking at ADC channel 3 |
| 6489 | min s | same as above except: 120Hz rep rate, -500 Volts, |
| 6490 | min s | same as above except: -550 Volts, |
| 6491 | min s | same as above except: -575 Volts, |
| 6492 | min s | same as above except: inserted Aluminum brick to be sure electrons are staying on accelerator side, drops NaI output by factor of 2 |
| 6493 | min s | same as above except: -600 Volts |
| 6494 | min s | same as above except: -700 Volts |
| 6498 | min s | same as above except: -500 Volts, magnet out |
| 6499 | min s | same as above except: -700 Volts, very similar ADC spectrum for magnet in |
FC -vs- 90A beam stop correlation
FC = Aluminum brick 2" from exit window near NaI detectors
50 Ohm scope termination
| 90 A BS (nVs) | FC (nVs) |
| 47 | 25 |
| 24 | 11.9 |
| 13 | 6 |
| 6.1 | 2.3 |
| 4.8 | 1.8 |