Single-shot wakefield measurement system
Abstract
A new experimental technique for the accurate measurements of wakefields is presented. Knowledge of wakefields is required for many applications ranging from the suppression of wakefields that arise from geometrical discontinuities to the enhancement of wakefields in structure and plasma based wakefield accelerators. In the past, direct measurements of wakefields were done with the drive-witness technique wherein the delay of a short witness beam trailing collinearly behind a high-charge drive beam is scanned over multiple shots and the wakefield is inferred from the energy spectrum of the witness beam. That technique is limited by shot-to-shot jitter, overlap of the drive and witness energy spectrum and the loss of all time-domain information. In this paper, we describe a new technique that overcomes these limitations by measuring the longitudinal phase space of a long witness beam and the drive beam in a single shot. We conclude by presenting experimental results to demonstrate its feasibility using a dielectric structure wakefield accelerator.
- Authors:
-
- Tsinghua University, Beijing (China)
- POSTECH, Pohang, Gyeongbuk (Republic of Korea)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NNSFC)
- OSTI Identifier:
- 1457205
- Alternate Identifier(s):
- OSTI ID: 1488568
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Accelerators and Beams
- Additional Journal Information:
- Journal Volume: 21; Journal Issue: 6; Journal ID: ISSN 2469-9888
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS
Citation Formats
Gao, Qiang, Shi, Jiaru, Chen, Huaibi, Ha, Gwanghui, Power, John G., Conde, Manoel, and Gai, Wei. Single-shot wakefield measurement system. United States: N. p., 2018.
Web. doi:10.1103/PhysRevAccelBeams.21.062801.
Gao, Qiang, Shi, Jiaru, Chen, Huaibi, Ha, Gwanghui, Power, John G., Conde, Manoel, & Gai, Wei. Single-shot wakefield measurement system. United States. doi:10.1103/PhysRevAccelBeams.21.062801.
Gao, Qiang, Shi, Jiaru, Chen, Huaibi, Ha, Gwanghui, Power, John G., Conde, Manoel, and Gai, Wei. Tue .
"Single-shot wakefield measurement system". United States. doi:10.1103/PhysRevAccelBeams.21.062801.
@article{osti_1457205,
title = {Single-shot wakefield measurement system},
author = {Gao, Qiang and Shi, Jiaru and Chen, Huaibi and Ha, Gwanghui and Power, John G. and Conde, Manoel and Gai, Wei},
abstractNote = {A new experimental technique for the accurate measurements of wakefields is presented. Knowledge of wakefields is required for many applications ranging from the suppression of wakefields that arise from geometrical discontinuities to the enhancement of wakefields in structure and plasma based wakefield accelerators. In the past, direct measurements of wakefields were done with the drive-witness technique wherein the delay of a short witness beam trailing collinearly behind a high-charge drive beam is scanned over multiple shots and the wakefield is inferred from the energy spectrum of the witness beam. That technique is limited by shot-to-shot jitter, overlap of the drive and witness energy spectrum and the loss of all time-domain information. In this paper, we describe a new technique that overcomes these limitations by measuring the longitudinal phase space of a long witness beam and the drive beam in a single shot. We conclude by presenting experimental results to demonstrate its feasibility using a dielectric structure wakefield accelerator.},
doi = {10.1103/PhysRevAccelBeams.21.062801},
journal = {Physical Review Accelerators and Beams},
number = 6,
volume = 21,
place = {United States},
year = {2018},
month = {6}
}
DOI: 10.1103/PhysRevAccelBeams.21.062801
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