An X-ray Absorption Edge Detector for High-Resolution Measurement of Undulator Effective K-Parameter

Conference · Wed Mar 07 00:00:00 UTC 2007 · AIP Conf.Proc.868:549-557,2006

OSTI ID:900613

Yang, B; Galayda, J N

The spectrum of angle-integrated undulator radiation displays a sharp edge at every harmonic photon energy. A technique utilizing this feature to measure minute changes in K-parameters of an undulator in a free-electron laser has been proposed. To date, this technique requires the use of crystal monochromators as bandpass filters whose energy centroid depends on the incident angle of the x-ray beam. In this work we propose to use the absorption edge of an appropriate element as an energy-selective detector whose response is truly independent of the angle of the x-ray beam, and hence independent of electron beam direction and emittance. We will discuss the basic design concept of the detection system and illustrate its projected performance with computer simulations.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 900613
• Report Number(s): SLAC-PUB-12352
• Conference Information: Journal Name: AIP Conf.Proc.868:549-557,2006
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ABSORPTION
Accelerators
ACCPHY
COMPUTERIZED SIMULATION
DESIGN
DETECTION
ELECTRON BEAMS
FERMILAB
FREE ELECTRON LASERS
HARMONICS
MONOCHROMATORS
PERFORMANCE
PHOTONS
RADIATIONS
WIGGLER MAGNETS