RCDB Conditions Help
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Condition Name | EPICS variable | Notes |
---|---|---|
beam_current | IBCAD00CRCUR6 | Beam current from electron dump (?) BCM, averaged over run, in nA |
beam_energy | HALLD:p | Measured electron beam energy, in GeV |
coherent_peak | HD:CBREM:REQ_EDGE | Requested high-energy edge of the coherent peak, in GeV |
collimator_diameter | hd:collimator_at_[block,a,b] | 5 mm, 3.4 mm, blocking |
luminosity | N/A | For future use |
ps_converter | hd:converter_at_[home,a,b,c] | 5x10-3 RL, 1x10-3 RL, 3x10-4 RL, Retracted |
solenoid_current | HallD-PXI:Data:I_Shunt | Measured current in solenoid magnet, in A |
status | N/A | For future use |
radiator_index | HD:GONI:RADIATOR_INDEX | in this page]. |
radiator_id | HD:GONI:RADIATOR_ID | in this page]. |
polarization_direction | HD:CBREM:PLANE | Direction of the photon beam linear polarization with respect to the floor: PARA, PERP, or UNKNOWN |
radiator_type | in this page], Amorphous radiator (2x10-5 RL, 1x10-4 RL, 3x10-4 RL), or retracted | |
target_type | HLD:TGT:status | Status of LH2 target: OFF, Cooling, Filling, FULL & Ready, Emptying, EMPTY & Ready |
Other Notes
- When the nA BPMs are calibrated, we could use another variable for the beam current that might be more accurate for lower (<1 uA) currents, e.g. IPM5C11.VAL,IPM5C11A.VAL,IPM5C11B.VAL,IPM5C11C.VAL