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--- hv_bias [2014/12/04 18:25]
pereira [HV Remote control]
+++ hv_bias [2015/10/19 12:45]
pereira [HV Manual control]
@@ Line 7: / Line 7: @@
 {{:wiki:hv-gui.png?700|GUI control panel of the S800 detectors HV}}
+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
 ===== HV Manual control ====
 Apart from the detectors listed above, the voltages of the [[Detectors#Plastic Scintillators|object scintillator]]
- and the **electrostatic gate** of the [[Detectors#Cathode Readout Drift Chambers (CRDC)|CRDCs]] are adjusted manually.
+ and the electrostatic gate of the [[Detectors#Cathode Readout Drift Chambers (CRDC)|CRDCs]] are adjusted manually.
 The bias for the object scintillator is controlled via the H.V. power supply {{:wiki:Manual_Canberra_HV_3002D.pdf|Canberra model 3002 D}} located in the crate to the right of the data-U6 (see figure below). The voltage will be adjusted at the beginning of the experiment. This scintillator has to be turned off or put on "standby" when entering the vault due to its sensitivity to light. The voltage used for this detector depends on the fragment nuclei that will be measured. Check with **Daniel Bazin** for a reference value.
-In order for the [[Detectors#Cathode Readout Drift Chambers (CRDC)|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 typical value is 20 V.
+In order for the [[Detectors#Cathode Readout Drift Chambers (CRDC)|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 typical value is 20 V.
 {{:wiki:nim-crate2-du6.jpg?400|NIM crate 2 in data-U6}}

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