Detector

Pilatus3 X 2M, a 2D detector from Dectris, was installed at the beamline in January 2020. Its active area is 25.37 cm x 28.88 cm with pixel size of 172 microns, 1475 x 1679 array. The main advantages of this detector are the single photon counting capability, point-spread function of 1 pixel and dynamic range of 20 bits (1:1,048,573). Bigger sensitive area allows wider achievable q-range when gaining in S/N ratio. Detector is vacuum compatible and was installed into a new flight tube in January 2024.

Detector in air set-up (before January 2024):

Detector in vacuum vessel set-up (after January 2024):

How to use Pilatus detector for data collection via BxsCuBE GUI:

1) chiller should be on (in vacuum operation required T=10deg.C),

2) vacuum in flight tube better than 3x10^-1 mbar,

2) lbm29pilatusdcu computer on,

3) detector controller power on (black box at the back of marble table),

4) its server should be running on nela computer (start two Pilatus servers in supervisor).

A typical image of BSA (bovin serum albumin) with Pilatus 2M detector recorded with detector in air (before January 2024):

A typical image of BSA with Pilatus 2M detector recorded with detector in vacuum (note different beamstop position and larger illuminated area):