Longitudinal Jitter Analysis of a Linear Accelerator Electron Gun
by
MingShan Liu 1 and Munawar Iqbal 1,2,*
MingShan Liu 1 and Munawar Iqbal 1,2,*
1
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2
Centre for High Energy Physics, University of the Punjab, Lahore 45590, Pakistan
*
Author to whom correspondence should be addressed.
Academic Editor: Christoph Peter Hauri
Appl. Sci. 2016, 6(11), 350; https://doi.org/10.3390/app6110350
Received: 19 June 2016 / Revised: 24 October 2016 / Accepted: 8 November 2016 / Published: 19 November 2016
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.
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Keywords:
gun trigger timing; longitudinal jitter; beam performance; PARMELA
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Liu, M.; Iqbal, M. Longitudinal Jitter Analysis of a Linear Accelerator Electron Gun. Appl. Sci. 2016, 6, 350.
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