Detector Operation



   FTPC expert(s) currently on call:

   Alexei Lebedev          Phone: 3101         Cell phone: 631 255 4977



Please remember to place the FTPC into "Physics" mode and verify anode voltages (1800 W, 1800 E) after taking pedestals.

In case of an FTPC alarm,please check the "Temperature-Pressure" window - if ALL readings in FTPC East and/or West = 0, call Alexei.

In case of an anode trip, please enter the time the trip occurred and which FTPC and sector tripped into the FTPC log book.

Y2004 Standard set points

    Detector always ON
    Change configuration to operate in different modes or to set the detector to rest waiting for beam
    Set the system in ``Magnet ramp'' configuration ONLY when the magnet is ramping

ALWAYS!!!!!! verify Anode Voltages = voltages for selected run mode !!!

Voltage Settings
Cathode voltage (2 channels)     -10kV±5V 
Anode voltage (2x6 channels), Physics    +1800V ±2V West, +1800V ±2V East
Anode voltage (2x6 channels), laser    +1200V±2V West, +1200V±2V East
Anode voltage (2x6 channels), pedestals    +1000V±2V West, +1000V±2V East
Anode voltage (2x6 channels), stand by   0V West/East, (+~15V are displayed) 
Gating grid (2x4 channels)  -76V±2V open, -76V±115V closed


Y2007/2008 Standard Values
Water pressure in (West/East)     -400mbar -> -100mbar 
Water temperature (West/East)     <31 C 
O2(ppm) (West/East)     <10ppm
H2O (dp C) Westt/East)     <-50 C dp
Ar flow = CO2 flow (West/East)     72l/h->78l/h; West=East 
Cathode current 0.14mA 
Anode current  -15nA < I < 15nA 




For more information, please consult:

* FTPC Operations Manual

* FTPC Shift Checklist

* FTPC Run School