Transcript X-Ray
LCLS Detector Development Plans John Arthur April 7, 2005 X-ray detectors John Arthur [email protected] The Problem LCLS experiments are expensive and pulsed Data comes all at once Want to collect all the data Current x-ray area detectors are not good enough Too slow, too noisy, etc Getting money for detector development is hard April 7, 2005 X-ray detectors John Arthur [email protected] How can the LCLS project help? Use project funding for some detector development PIXEL project can also fund detector development April 7, 2005 X-ray detectors John Arthur [email protected] The Plan LCLS project has allocated about $3.5M for development of a prototype 2-d x-ray detector PIXEL project intends to fund detector development at a comparable level April 7, 2005 X-ray detectors John Arthur [email protected] Recent Developments LCLS Detector Advisory Committee formed LCLS and PIXEL agree to coordinate, specify detectors for specific experiments April 7, 2005 X-ray detectors John Arthur [email protected] Detector Advisory Committee Gareth Derbyshire (Rutherford Appleton), chair Yoshiyuki Amemiya (Univ. Tokyo) Eric Eikenberry (PSI) Erik Heijne (CERN) Lothar Strueder (Univ. Munich) Albert Walenta (Univ. Siegen) April 7, 2005 X-ray detectors John Arthur [email protected] Detector Development within PIXEL PIXEL anticipates funding a 2-d detector Groups that proposed detector development to the LCLS SAC were invited to submit expanded proposals to the LDAC last winter LDAC met in February to discuss the proposals Based on LDAC report, PIXEL plans to initiate a collaboration with BNL to develop a 2-d detector in the 2005-2008 time frame April 7, 2005 X-ray detectors John Arthur [email protected] The LDAC and LCLS LCLS asked LDAC to also consider the proposed 2-d detector collaboration with Cornell Based on their report, LCLS will continue with the Cornell collaboration, and also initiate a collaboration with LBNL to develop a fast x-ray streak camera April 7, 2005 X-ray detectors John Arthur [email protected] Two technologies Cornell detector Si diode pixel array detector Detector array is bump-bonded to individual electronics for each pixel BNL detector Si diode array with transistor gating Read out row by row to electronics Wire bonding between detector and electronics April 7, 2005 X-ray detectors John Arthur [email protected] Other detectors in LCLS Several less ambitious projects Streak camera (LBNL) Beam imaging cameras (LLNL) Intensity monitors (LLNL) April 7, 2005 X-ray detectors John Arthur [email protected] Summary LCLS and PIXEL will fund parallel efforts to develop highperformance 2-d x-ray detectors, using different technologies LCLS will also fund less ambitious detector development projects Streak camera Beam imaging cameras LDAC will continue to provide guidance April 7, 2005 X-ray detectors John Arthur [email protected]