Difference between revisions of "PePPO 03132012"
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(Created page with '=Accelerator Configuration= ;Accelerator Settings {| border="1" | beam energy || 6.8 MeV |- | Beam type: || Electron |- | I_average: || 0.3 nA |- | I_peak: || 0.05<mat…') |
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=Scope Pictures= | =Scope Pictures= | ||
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CH1: Beam Sync | CH1: Beam Sync | ||
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CH2: A1 | CH2: A1 | ||
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CH3: A2 | CH3: A2 | ||
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| Target|| Pictures | | Target|| Pictures | ||
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| − | | No Target || 1_03132012_AnnhCountScopePic.png | + | | No Target || [[File:1_03132012_AnnhCountScopePic.png| 200 px]] [[File:2_03132012_AnnhCountScopePic.png| 200 px]] |
|- | |- | ||
| − | | Chromox Target|| | + | | Chromox Target|| [[File:3_03132012_AnnhCountScopePic.png| 200 px]] [[File:4_03132012_AnnhCountScopePic.png| 200 px]] |
|} | |} | ||
Revision as of 01:23, 14 March 2012
Accelerator Configuration
- Accelerator Settings
| beam energy | 6.8 MeV |
| Beam type: | Electron |
| I_average: | 0.3 nA |
| I_peak: | 0.05 A 0.006 duty factor |
| pulse width: | 10 s (it seems on 200 s is possible?) |
| Rate: | 60 Hz |
| PEPPO Spectrometer: | 151.3 A |
Set HV to Detectors
| Signal channel | HV dac | HV (V) | |
| Detectors #1 | A1 | 2.4 | 960 |
| Detectors #2 | A2 | 3.0 | 1200 |
Scope Pictures
CH1: Beam Sync CH2: A1 CH3: A2
| Target | Pictures |
| No Target |  
|
| Chromox Target |  
|
Run Plan
- Signal Definitions for Trigger logic
- SYNC:=60 Hz sync pulse 200 micro seconds long
- Det1:= Annihilation Counter #1 (HV1)
- Det2:=Annihilation Counter #2 (HV2)
Please make the following measurements
| Run# | run mode | Run length | Beam | Target | Trig Logic | VME discriminator Threshold (mV) | HV1 (setting/V) | HV2 (setting/V) | PL (setting/ns) | PTW (setting/ns) |
| sample | 5 minutes | e | Chromox | SYNC AND (Det1 OR Det2) | 50 | 2.4/960 | 3/1200 | 280/1120 | 250/1000 | |
| sample | 5 minutes | e | Empty | SYNC AND (Det1 OR Det2) | 50 | 2.4/960 | 3/1200 | 280/1120 | 250/1000 | |
| sample | 10 minutes | e | Chromox | SYNC AND Det1 AND Det2 | 50 | 2.4/960 | 3/1200 | 280/1120 | 250/1000 | |
| sample | 15 minutes | e | Empty | SYNC AND Det1 AND Det2 | 50 | 2.4/960 | 3/1200 | 280/1120 | 250/1000 | |
| sample | 30 minutes After Beam Studies end | off | out | (Det1 or Det2) | 50 | 2.4/960 | 3/1200 | 280/1120 | 250/1000 |