An IPM consists of a diode, 4 targets and an aperture behind linked to the diode.
The height of the targets and of the diode aperture is 10 mm.
IPM1 : at the beginning of XRT
IPM2 : before LODCM
IPMmono : After LODCM
IPM3 : ~ 10m downstream from IPMmono
IPM4 : in alcove
IPM5 : in hutch (0.8m upstream from sample)
Targets:
4 targets exists with different thickness and absorption. Smaller number for thicker targets and less absorption/signal.
target 1: 1um Si3N4
target 2: 2um Si3N4
target 3: 4um Si3N4
target 4:
The targets move only vertically (~20 mm) : ipm2.ty.mvr(x)
To drive them in, use presets: ipm2.target_in(x) x=number of target
Diode:
The diode moves vertically (~20 mm) and horizontally (~2 mm): ipm2.dy.mvr(x), ipm2.dx.mvr(x)
For the IPM diode configuration open in terminal:
ipmConfigEpics -x (where x is u for user ipm, and 1 to 4 for ipm1 to ipm4) usually 120 pF is a good gain for the diodes.