Longitudinal Jitter Analysis of a Linear Accelerator Electron Gun

Liu, MingShan; Iqbal, Munawar

doi:10.3390/app6110350

Volume 6, Issue 11

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Appl. Sci. 2016, 6(11), 350; https://doi.org/10.3390/app6110350

Longitudinal Jitter Analysis of a Linear Accelerator Electron Gun

MingShan Liu¹

and Munawar Iqbal^1,2,*

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Centre for High Energy Physics, University of the Punjab, Lahore 45590, Pakistan

Author to whom correspondence should be addressed.

Academic Editor: Christoph Peter Hauri

Received: 19 June 2016 / Revised: 24 October 2016 / Accepted: 8 November 2016 / Published: 19 November 2016

Full-Text | PDF [4704 KB, uploaded 19 November 2016] |

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Abstract

We present measurements and analysis of the longitudinal timing jitter of a Beijing Electron Positron Collider (BEPCII) linear accelerator electron gun. We simulated the longitudinal jitter effect of the gun using PARMELA to evaluate beam performance, including: beam profile, average energy, energy spread, and XY emittances. The maximum percentage difference of the beam parameters is calculated to be 100%, 13.27%, 42.24% and 65.01%, 86.81%, respectively. Due to this, the bunching efficiency is reduced to 54%. However, the longitudinal phase difference of the reference particle was 9.89°. The simulation results are in agreement with tests and are helpful to optimize the beam parameters by tuning the trigger timing of the gun during the bunching process. View Full-Text

Keywords: gun trigger timing; longitudinal jitter; beam performance; PARMELA

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