The high-voltage of the TPPACs, Ion Chamber, the CRDCs, FP Scintillator, and Hodoscope are remotely controlled via GUI control panel (see figure below). The GUI can be opened from the desktop of the u4pc1 computer. Logging in as s800 user, start the singularity container for Debian 8 (Jessie) with

$ jessie_load

and use the script

$ /usr/opt/iseg-beta/start.sh

The GUI control panel looks like this when the detectors are biased:

The channel list is found elsewhere. The actual HV modules are located on the top level of the S3 vault, under the FP chamber.

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