The Rapid2 X-ray detection system

✍ Scribed by Andrew Berry; William I. Helsby; Brian T. Parker; Chris J. Hall; Paul A. Buksh; Andy Hill; Nick Clague; Mark Hillon; Garry Corbett; Paul Clifford; Alan Tidbury; Rob A. Lewis; Bob J. Cernik; Paul Barnes; G.E. Derbyshire

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 210 KB
• Volume: 513
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2003.08.043

✦ Synopsis

A second generation of the Rapid readout electronics has been designed, built and commissioned at Daresbury Laboratory. The first application is for a 1D small-and wide-angle scattering X-ray detection system on the new multipole wiggler 6.2 beam-line at the SRS. The ADC per channel system interpolates and yields typically 32 pixels per channel. The wide-angle detector uses 128 channels of electronics to produce 4096 pixels with a FWHM of four pixels, i.e. demonstrates an ability to resolve 1024 peaks across the detector. This corresponds to an FWHM of 400 mm over a 384 mm long ð60 Þ curved detector. A second group of 128 channels instrument the 200-mm-radius quadrant detector for simultaneous small-angle scattering measurements. System rate of over 2 Â 10 7 events=s for each detector is predicted. A description of the new pipelined digital processing of detected events is given, together with initial beamline test results.