Title: Longitudinal dynamics of twin electron bunches in the Linac Coherent Light Source

Abstract

The recent development of two-color x-ray free-electron lasers, as well as the successful demonstration of high-gradient witness bunch acceleration in a plasma, have generated strong interest in electron bunch trains, where two or more electron bunches are generated, accelerated and compressed in the same accelerating bucket. In this paper we give a detailed analysis of a twin-bunch technique in a high-energy linac. This method allows the generation of two electron bunches with high peak current and independent control of time delay and energy separation. We find that the wakefields in the accelerator structures play an important role in the twin-bunch compression, and through analysis show that they can be used to extend the available time delay range. As a result, based on the theoretical model and simulations we propose several methods to achieve larger time delay.

Authors:

Zhang, Zhen; Ding, Yuantao; Marinelli, Agostino; Huang, Zhirong

Publication Date:

Mon Mar 02 00:00:00 EST 2015

Research Org.:

SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:

1181464

Alternate Identifier(s):

OSTI ID: 1168435

Report Number(s):

SLAC-PUB-16196
Journal ID: ISSN 1098-4402; PRABFM; 030702

Grant/Contract Number:  

AC02-76SF00515

Resource Type:

Published Article

Journal Name:

Physical Review Special Topics. Accelerators and Beams

Additional Journal Information:

Journal Name: Physical Review Special Topics. Accelerators and Beams Journal Volume: 18 Journal Issue: 3; Journal ID: ISSN 1098-4402

Publisher:

American Physical Society

Country of Publication:

United States

Language:

English

Subject:

43 PARTICLE ACCELERATORS; ACCPHY; XFEL