Title :
Photon pulse filtering and modulation based on the extreme temporal compression and correlated energy spread of the electron bunches in the SLAC Linac Coherent Light Source (LCLS)
Author_Institution :
Stanford Linear Accel. Center, Stanford Univ., CA, USA
Abstract :
The LCLS photon pulses are expected to attain unprecedented levels of brightness and brevity in the 300-400 eV range. Nominally, the photon pulse length will be dominated by the electron bunch length, while the performance of conventional X-ray reflecting and band-shaping optics will be limited by: 1) peak power damage, and 2) transform-limited monochromatization. In this paper we describe how: 1) the correlated energy spread in the electron bunch can be used to selectably compress the LCLS photon pulses to below their nominal length; 2) gas optics can be used to mitigate peak damage problems; 3) the LCLS pulse structure can, in principle, accommodate schemes based on “disposable” optics; and 4) pulse lengthening schemes can be used to extend the attainable degree of monochromatization
Keywords :
X-ray optics; X-ray production; free electron lasers; 300 to 400 eV; LCLS; Linac Coherent Light Source; X-ray optics; X-ray reflection; correlated energy spread; electron bunch length; electron bunches; monochromatization; peak damage; photon pulse filtering; photon pulse length; photon pulse modulation; pulse lengthening; Electron optics; Filtering; Linear particle accelerator; Optical filters; Optical modulation; Optical pulses; Optical sensors; Pulse amplifiers; Pulse compression methods; Pulse modulation;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.308554
