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SUMMARY:Future electron imaging detectors for radiation sensitive samples 
 - Dr Greg McMullan\,MRC Laboratory of Molecular Biology\, University of Ca
 mbridge
DTSTART:20091027T150000Z
DTEND:20091027T160000Z
UID:TALK20533@talks.cam.ac.uk
CONTACT:Dr Jonathan Barnard
DESCRIPTION:Much of the benefit from using higher voltage in the study of 
 radiation sensitive biological samples is currently lost due to the deteri
 oration in performance of existing electron imaging detectors at higher vo
 ltages. As the loss in performance cannot be made up for with increased do
 se there is strong interest in having better detectors\, particularly for 
 use at 300 kV. Of the detectors we have investigated\, CMOS based monolith
 ic active pixel sensors (MAPS) look the most promising. MAPS detectors are
  damaged by exposure to the electron beam but can be designed to have suff
 icient lifetime that their performance\, especially when backthinned\, pro
 mises a revolution in the investigation of radiation sensitive samples. Th
 e sensitivity and speed of MAPS detectors allow new ways to acquire data. 
  In particular\, it possible to achieve the ultimate in detector performan
 ce through the generation of a final image from the recorded signals of in
 dividual incident electrons.\n
LOCATION:T001 [Tower Seminar Room]\, Materials Science and Metallurgy\, De
 partment of
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