Compact pseudo-2D strip detector system for sub-meV IXS

17th Pan-American Synchrotron Radiation Instrumentation Conference

Keister, J.W.^1 ; Siddons, D.P.^1 ; Kuczewski, A.^1 ; Coburn, D.S.^1 ; Beuttenmuller, R.^2 ; Rumaiz, A.^1 ; Cai, Y.Q.^1

Photon Sciences Direc., Brookhaven National Laboratory, Upton, NY 11973-5000, United States^1

Instrumentation Division, Brookhaven National Laboratory, Upton, NY 11973-5000, United States^2

关键词: Detector geometry;    Energy analyzer;    Inelastic X ray scattering;    Sensor geometries;    Silicon devices;    Threshold optimization;    Ultra low noise;    Vacuum enclosure;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/493/1/012015/pdf
DOI  :  10.1088/1742-6596/493/1/012015

来源: IOP

【 摘 要 】

A dual 32 strip sensor array is realized for use at the IXS (inelastic x-ray scattering) beamline of NSLS-II. By making use of established controls methods and sensor device recipes, our new geometry is realized quickly and at minimal cost. The detector geometry is chosen to match the output of a multi-element high-resolution energy analyzer, while the pulse thresholding is optimized for an ultra-low noise floor at a pass energy of 9.13 keV. Detector subsystems and integration are described, including sensor geometry and silicon device processing, cooling and thermal readback, bias and threshold optimizations, readout ASIC and controls, vacuum enclosure and x-ray window, mounting and positioning, and assembly procedure and testing.