S4 - TPC41 (GHFSEG1T)

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Present Configuration (as of 2021/Feb/15)

• 1st TPC at S4, just next to the exit vacuum window.
• Gap (vertical) = 6 cm (This means -2400 V for the drift field voltage)
• Installed in the normal orientation. (Note: the distance to Qua. )
• Calibration positions should be x = -12, 0, +12 mm and y = -6, 0, +6 mm (based on notes from 2016 beamtime)

Prevuious Configuration (as of 2020/Oct/22)

• 1st TPC at S4, just next to the exit vacuum window.
• Gap (vertical) = 6 cm (This means -2400 V for the drift field voltage)
• Installed in the normal orientation. (It was somehow reversed from 2019 to 2020/June)
• Calibration positions should be x = -12, 0, +12 mm and y = -6, 0, +6 mm (based on notes from 2016 beamtime)
• Maximum allowed HV: -2400 V (drift), +1100 V (anode), -700 V (calibration, PMT).
• For heavy ions, anode and PMT voltages should be much lower than the maximum values.
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