Longitudinal bunch profile measurement of operational H- beam using laser wire and virtual slit

被引：0
|
作者：
Liu, Y. [1 ]
Long, C. [1 ]
Shishlo, A. [1 ]
Aleksandrov, A. [1 ]
Brown, D. [1 ]
Thurman-Keup, R. [2 ]
Scarpine, V. [2 ]
机构：
[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[2] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
来源：
PHYSICAL REVIEW ACCELERATORS AND BEAMS | 2023年 / 26卷 / 04期
关键词：
D O I：
10.1103/PhysRevAccelBeams.26.042801
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We propose and demonstrate a nonintrusive diagnostic technique for measuring longitudinal bunch profiles of an operational high-power hydrogen ion (H-) beam in the Spallation Neutron Source (SNS) linear accelerator at Oak Ridge National Laboratory (ORNL). The technique consists of a laser wire formed by a picosecond pulsed laser beam and a virtual slit created by controlling the magnetic field of the electron detector. The virtual slit eliminates the influence of the transverse beam profile and size on the longitudinal bunch profile measurement. The effectiveness of the diagnostics is investigated first in numerical simulations followed by experimental demonstrations performed on the neutron production (1.4 MW on target) H- beam at the SNS superconducting linac. The results from the present measurement method are verified by an independent measurement approach.
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页数：14
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