TY - JOUR
T1 - Measurement of an electron beam size with a laser wire beam profile monitor
AU - Sakai, Hiroshi
AU - Honda, Yousuke
AU - Sasao, Noboru
AU - Araki, Sakae
AU - Higashi, Yasuo
AU - Okugi, Toshiyuki
AU - Taniguchi, Takashi
AU - Urakawa, Junji
AU - Takano, Mikio
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2001
Y1 - 2001
N2 - We describe the first measurement of an electron beam size in the accelerator test facility damping ring at KEK with a laser wire beam profile monitor. This monitor is based upon the Compton scattering process of electrons with a laser light target, which is produced by injecting a cw laser beam into a Fabry-Pérot optical cavity. We have observed clear signals of the Compton scattered photons and confirmed that the observed energy spectrum as well as the count rate agree with the expected ones. From the measurement, we have deduced the vertical beam size σb to be 9.8 ± 1.1 ± 0.4 μm, where the first (second) error represents statistical (systematic) uncertainty. Various improvements are in progress to enhance the signal-to-noise ratio, which is essential for the detailed study of the beam dynamics.
AB - We describe the first measurement of an electron beam size in the accelerator test facility damping ring at KEK with a laser wire beam profile monitor. This monitor is based upon the Compton scattering process of electrons with a laser light target, which is produced by injecting a cw laser beam into a Fabry-Pérot optical cavity. We have observed clear signals of the Compton scattered photons and confirmed that the observed energy spectrum as well as the count rate agree with the expected ones. From the measurement, we have deduced the vertical beam size σb to be 9.8 ± 1.1 ± 0.4 μm, where the first (second) error represents statistical (systematic) uncertainty. Various improvements are in progress to enhance the signal-to-noise ratio, which is essential for the detailed study of the beam dynamics.
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U2 - 10.1103/PhysRevSTAB.4.022801
DO - 10.1103/PhysRevSTAB.4.022801
M3 - Article
AN - SCOPUS:18144362831
VL - 4
SP - 34
EP - 39
JO - Physical Review Special Topics - Accelerators and Beams
JF - Physical Review Special Topics - Accelerators and Beams
SN - 1098-4402
IS - 2
M1 - 022801
ER -