Title :
LCLS-S1 optical transition radiation monitor
Author :
Berg, W.J. ; Yang, B.X. ; Erwin, L.L. ; Shoaf, S.E.
Author_Institution :
ANL, Argonne
Abstract :
Argonne National Laboratory has developed a high- resolution optical transition radiation (OTR) imaging monitor for the Linac Coherent Light Source (LCLS) injection linac at SLAC. The imaging station,OTR-S1, will be located at the S1 spectrometer with a beam energy of 135 MeV. The system will be used to acquire 2-D transverse beam distributions of the accelerated photocathode-gun-generated electron beam. We anticipate an average beam current of 0.2 to 1 nC and nominal beam spot size of 130 mum (sigmax), 100 mum (sigmay). The imaging system was designed for a field of view x/y: 10 times 7.5 mm. The spatial resolution of ~12 microns was verified over the central 5times4 mm region in the visible. A 12-bit digital camera acquires the image and a Mac-based digital frame-capturing system was employed for the initial lab-based performance testing of the device. We report on system development, testing methods, and data analysis.
Keywords :
cameras; electron beams; image sensors; light sources; linear accelerators; particle beam injection; photocathodes; transition radiation; 2-D transverse beam distributions; Argonne National Laboratory; LCLS; Linac Coherent Light Source; Mac-based digital frame capturing system; OTR; S1 spectrometer; SLAC; beam energy; digital camera; electron beam; high resolution optical transition radiation imaging monitor; injection linac; photocathode gun; spatial resolution; Electron optics; Energy resolution; High-resolution imaging; Image resolution; Laboratories; Light sources; Linear particle accelerator; Optical imaging; Radiation monitoring; System testing;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440017
