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hv_bias [2014/11/19 11:58] pereira [HV Manual control] |
hv_bias [2023/02/13 14:29] noji |
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===== HV Remote control ===== | ===== HV Remote control ===== | ||
- | The high-voltage of the [[Detectors# | + | The high-voltage of the [[Detectors# |
+ | The GUI can be opened from the desktop of the u4pc1 computer. | ||
- | {{: | + | $ jessie_load |
+ | and use the script | ||
- | ===== HV Manual control ==== | + | $ / |
- | Apart from the detectors listed above, the voltages of the object scintillator and the **electrostatic gate** of the [[Detectors# | + | |
- | The bias for the object scintillator is controlled via the H.V. power supply {{:wiki: | + | The GUI control panel looks like this when the detectors are biased: |
- | In order for the CRDCs to work, it is necessary to bias their electrostatic gate. This is done via the H.V. Tennelec power supply located on the left side of the object-scintillator Canberra power supply (see figure below). | + | {{: |
- | + | ||
+ | The channel list is found elsewhere. | ||
+ | The actual HV modules are located on the top level of the S3 vault, under the FP chamber. | ||
- | {{:wiki:nim-crate2-du6.jpg?400|NIM crate 2 in data-U6}} | + | {{:wiki:img_1369.png|}} |
+ | |||
+ | Other examples of HV values used with different fragment beams are: | ||
+ | |||
+ | * **CRDC1 and CRDC2**: | ||
+ | * For He-3 @ ~130 MeV/u: CRDC1 (Anode=1120 V, Drift=1000 V); CRDC2 (Anode=1120 V; Drift=1000 V) | ||
+ | * For Be-12 @ ~30 MeV/u: CRDC1 (Anode=970 V, Drift=1000 V); CRDC2 (Anode=970 V; Drift=1000 V) | ||
+ | * For Ar-34 @ ~80 MeV/u: CRDC1 (Anode=860 V, Drift=1000 V); CRDC2 (Anode=840 V; Drift=1000 V) | ||
+ | * For Zn-58 @ ~44 MeV/u: CRDC1 (Anode=740 V, Drift=1000 V); CRDC2 (Anode=740 V; Drift=1000 V) | ||
+ | * For Rb-74 @ ~40 MeV/u: CRDC1 (Anode=650 V, Drift=1000 V); CRDC2 (Anode=650 V; Drift=1000 V) | ||
+ | * For U-238 (88+) @ ~70 MeV/u: CRDC1 (Anode=570 V, Drift=1000 V); CRDC2 (Anode=570 V; Drift=1000 V) | ||
+ | |||
+ | * **FP scintillator (E1 up and E1 down)**: | ||
+ | * For He-3 @ ~130 MeV/u: UP (1790 V); DOWN (1760 V) | ||
+ | * For Be-12 @ ~30 MeV/u: UP (1770 V); DOWN (1700 V) | ||
+ | * For Ar-34 @ ~80 MeV/u: UP (1580 V); DOWN (1510 V) | ||
+ | * For Zn-58 @ ~44 MeV/u: UP (1400 V); DOWN (1340 V) | ||
+ | * For U-238 (88+) @ ~70 MeV/u: UP (1180 V); DOWN (1280 V) | ||
+ | |||
+ | * **IC**: | ||
+ | * Typically 200 V | ||