Fabrication of Cryogenic Manganite Bolometers to Measure the Total Energy at the LCLS Free Electron X-ray Laser

Conference · Sat Jun 14 00:00:00 EDT 2008

DOI:https://doi.org/10.1109/TNS.2009.2019644· OSTI ID:1019056

Drury, O B; Yong, G J; Kolagani, R M; Liang, Y; Gardner, C; Ables, E; Fong, K W; Bionta, R M; Friedrich, S

We are developing cryogenic bolometers to measure the total energy of the Linac Coherent Light Source (LCLS) free electron X-ray laser that is currently being built at the Stanford Linear Accelerator Center. LCLS will produce ultrashort {approx}200 fs X-ray laser pulses with {approx}10{sup 13} photons at 0.8 keV up to {approx}10{sup 12} photons at 8 keV per pulse at a repeat interval as short as 8 ms, and will be accompanied by a halo of spontaneous undulator radiation. Our bolometer consists of a 375 {micro}m thick Si absorber and a Nd{sub 0.67}Sr{sub 0.33}MnO{sub 3} sensor operated at its metal-insulator transition. It will measure the total energy of each pulse with a precision of <1%, and is designed to meet the conflicting requirements of radiation hardness, sensitivity, linearity over a dynamic range of three orders of magnitude, and readout speed compatible with the LCLS pulse rate. Here we discuss bolometer design and fabrication, and the photoresponse of prototype devices to pulsed optical lasers.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 1019056
• Report Number(s): LLNL-CONF-404914; TRN: US1103563
• Resource Relation: Journal Volume: 56; Journal Issue: 3; Conference: Presented at: Symposium on Radiation Measurements and Applications, Berkeley, CA, United States, Jun 02 - Jun 05, 2008
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
71 CLASSICAL AND QUANTUMM MECHANICS
GENERAL PHYSICS
42 ENGINEERING
ACCURACY
BOLOMETERS
CRYOGENICS
DESIGN
ELECTRONS
FABRICATION
FREE ELECTRON LASERS
HARDNESS
LASERS
LIGHT SOURCES
LINEAR ACCELERATORS
PHOTONS
RADIATION DETECTORS
RADIATIONS
SENSITIVITY
SENSORS
STANFORD LINEAR ACCELERATOR CENTER
VELOCITY
WIGGLER MAGNETS
X-RAY LASERS