title: Beamstop with integrated X-ray sensor.
abstract: A versatile beamstop with an integrated sensor has been developed at the Stanford Synchrotron Radiation Laboratory (SSRL) using non-specialized components. A diameter of 1.5 mm was achieved using a commercial subminiature surface mount PIN diode (Phillips BAP64) molded into a tungsten epoxy composite cup. The cup is supported on a thin fiberglass arm with printed circuit traces to transmit the signal from the diode. The assembly has an active area of approximately 100 micro m in diameter. As the diode is encapsulated in plastic, the response diminishes with decreasing energy but is still useful at 6 keV.
authors.affiliation: Stanford Synchrotron Research Laboratory, Stanford University, SSRL MS99, 2575 Sand Hill Road, Menlo Park, CA 94025, USA. ellis@slac.stanford.edu
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Ellis
authors.forename: Aina E
authors.initials: AE
authors.lastname: Cohen
authors.forename: S Michael
authors.initials: SM
authors.lastname: Soltis