Optical Synchrotron Radiation Beam Imaging with a Digital Mask

Conference · Thu Nov 01 00:00:00 EDT 2012

OSTI ID:1068972

Fiorito, R. B. ^[1]; Zhang, H. D. ^[1]; Corbett, W. J. ^[2]; Fisher, A. S. ^[2]; Mok, W. Y. ^[2]; Tian, K. ^[2]; Douglas, D. ^[3]; Wilson, F. G. ^[3]; Zhang, S. ^[3]; Mitsuhashi, T. M. ^[4]; Shkvarunets, A. G. ^[1]

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1. University of Maryland, College Park, MD (United States)
2. SLAC, Menlo Park, CA (United States)
3. Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
4. KEK, Tsukuba (Japan)

We have applied a new imaging/optical masking technique, which employs a digital micro-mirror device (DMD) and optical synchrotron radiation (OSR), to perform high dynamic range (DR) beam imaging at the JLAB Energy Recovery Linac and the SLAC/SPEAR3 Synchrotron Light Source. The OSR from the beam is first focused onto the DMD to produce a primary image; selected areas of this image are spatially filtered by controlling the state of individual micro-mirrors; and finally, the filtered image is refocused onto a CCD camera. At JLAB this technique has been used successfully to view the beam halo with a DR ~ 105. At SPEAR3 the DMD was used to filter out the bright core of the stored beam to study the turn-by-turn dynamics of the 10-3 weaker injected beam. We describe the optical performance, present limitations and our plans to improve the DR of both experimental systems.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1068972
• Report Number(s): JLAB-FEL-12-1535; DOE/OR/23177-2511; TRN: US1300352
• Resource Relation: Conference: 2012 Beam Instrumentation Workshop (BIW12), Newport News, VA (United States), 15-19 Apr 2012
• Country of Publication: United States
• Language: English

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