Design of High Energy Photon Source Booster beam size monitor

Dechong Zhu; Yanfeng Sui; Junhui Yue; Yuemei Peng; Jiaming Liu; Jianshe Cao

doi:10.11884/HPLPB202133.200268

Journals >High Power Laser and Particle Beams >Volume 33 >Issue 4 >Page 044005 > Article

High Power Laser and Particle Beams
Vol. 33, Issue 4, 044005 (2021)

Design of High Energy Photon Source Booster beam size monitor

Dechong Zhu¹, Yanfeng Sui^1,2, Junhui Yue¹, Yuemei Peng¹..., Jiaming Liu¹ and Jianshe Cao^1,2,*|Show fewer author(s)

Author Affiliations

¹Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

²University of Chinese Academy of Sciences, Beijing 100049, China

show less

DOI: 10.11884/HPLPB202133.200268 Cite this Article

Dechong Zhu, Yanfeng Sui, Junhui Yue, Yuemei Peng, Jiaming Liu, Jianshe Cao. Design of High Energy Photon Source Booster beam size monitor[J]. High Power Laser and Particle Beams, 2021, 33(4): 044005 Copy Citation Text

show less

Abstract

High Energy Photon Source (HEPS) Booster is designed to ramp up the energy of the beam from linac and inject high quality electron beam to the storage ring. To measure the transverse beam size, emittance and energy spread of HEPS Booster, we designed two beam diagnostic beamlines at visible-UV spectrum region. The source points are at two bending magnets with different chromatic dispersion, one has no dispersion while the other has large dispersion. By measuring the transverse beam sizes with synchrotron imaging system, beam emittance and energy spread can also be calculated. This paper introduces the extraction of visible-UV light, and the optical imaging system, the spatial resolution. It also introduces the design of beam spot changes measurement during beam ramping process.

Keywords

beam diagnostic beam size monitor emittance energy spread HEPS Booster synchrotron radiation

$ \Delta _{{\rm{DOF}}\_{\rm{max}}}\approx \rho {\theta }_{{\rm{H}}}({\theta }_{{\rm{SR}}}+{\theta }_{{\rm{H}}}) $

(1)

View in Article

$ \Delta _{{\rm{DOF}}\_{\rm{rms}}}=\frac{\Delta _{{\rm{DOF}}\_{\rm{max}}}}{2\sqrt{2Ln2}} $

(2)

View in Article

$ {\theta }_{{\rm{SR}}}\approx 0.45{\left(\lambda /\rho \right)}^{1/3} $

(3)

View in Article

$ \Delta _{{\rm{Cur}}\_{\rm{max}}}=\frac{\rho }{{{\rm{COS}}}{\theta }_{{\rm{H}}}}-\rho \approx \frac{\rho {{\theta }_{{\rm{H}}}}^{2}}{2} $

(4)

View in Article

${\Delta _{{\rm{Cur}}\_{\rm{rms}}}} = \sqrt {\frac{{{\theta _{\rm{H}}}}}{2}{\rm{ }}\int_{ - {\theta _{\rm{H}}}}^{{\theta _{\rm{H}}}} {{{\left( {\frac{{\rho {x^2}}}{2}} \right)}^2}} {\rm{d}}x} = \frac{{\rho {\theta _{\rm{H}}}^2}}{2}\frac{1}{{\sqrt 5 }} = \frac{{{\Delta _{{\rm{Cur}}\_{\rm{max}}}}}}{{\sqrt 5 }}$

(5)

Dechong Zhu, Yanfeng Sui, Junhui Yue, Yuemei Peng, Jiaming Liu, Jianshe Cao. Design of High Energy Photon Source Booster beam size monitor[J]. High Power Laser and Particle Beams, 2021, 33(4): 044005

Download Citation

Tools

Save the article for my favorites

Paper Information

微信扫一扫：分享

微信扫一扫：分享