Thursday, April 22, 2010, 1:30 pm — NSLS-II Larege Conference Room, Bldg. 703
A new enhanced prototype (Prototype‐II) of a Monochromatic X‐ray Beam‐Position Monitor (X‐BPM) has been developed for end‐station users at the future NSLS‐II beamlines. A new design of a ring array of multi‐segmented Si photodiodes as a photon sensor has a larger solid angle than the previous design. Backscattering mode of operation is realized by utilizing custom‐made bi‐ASIC chips in a new electronic
readout design. Cooling module and UHV operation are selected to reduce inherent noise and background events. As a result of unprecedented and detailed modeling, characterization, and various calculations, the new X‐ray BPM is capable of achieving sub‐micron spatial resolution and even higher. I will present the novel methodology of developing a fluorescence‐type X‐ray detector in an ultra
high spatial resolution regime.
Hosted by: Hanfei Yan
6403 | INT/EXT | Events Calendar
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