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

Y. Liu; C. Long; A. Shishlo; A. Aleksandrov; D. Brown; R. Thurman-Keup; V. Scarpine

doi:10.1103/PhysRevAccelBeams.26.042801

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

Y. Liu, C. Long, A. Shishlo, A. Aleksandrov, D. Brown, R. Thurman-Keup, V. Scarpine

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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.

Original language	English
Article number	042801
Journal	Physical Review Accelerators and Beams
Volume	26
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevAccelBeams.26.042801
State	Published - Apr 2023

Funding

The authors acknowledge the support from Sarah Cousineau and technical help from Andy Webster and Syd Murray III. This research used resources at the Spallation Neutron Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated by the Oak Ridge National Laboratory. This work was supported by the U.S. DOE under Contracts No. DE-AC05-00OR22725 and No. DE-AC02-07CH11359. The U.S. government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan .

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725, DE-AC02-07CH11359
Office of Science
Oak Ridge National Laboratory

Access to Document

10.1103/PhysRevAccelBeams.26.042801

Cite this

@article{6cf6d73080534e7c83961e0fadffe8aa,

title = "Longitudinal bunch profile measurement of operational H- beam using laser wire and virtual slit",

abstract = "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.",

author = "Y. Liu and C. Long and A. Shishlo and A. Aleksandrov and D. Brown and R. Thurman-Keup and V. Scarpine",

note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",

year = "2023",

month = apr,

doi = "10.1103/PhysRevAccelBeams.26.042801",

language = "English",

volume = "26",

journal = "Physical Review Accelerators and Beams",

issn = "2469-9888",

publisher = "American Physical Society",

number = "4",

}

TY - JOUR

T1 - Longitudinal bunch profile measurement of operational H- beam using laser wire and virtual slit

AU - Liu, Y.

AU - Long, C.

AU - Shishlo, A.

AU - Aleksandrov, A.

AU - Brown, D.

AU - Thurman-Keup, R.

AU - Scarpine, V.

N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2023/4

Y1 - 2023/4

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85158914625&partnerID=8YFLogxK

U2 - 10.1103/PhysRevAccelBeams.26.042801

DO - 10.1103/PhysRevAccelBeams.26.042801

M3 - Article

AN - SCOPUS:85158914625

SN - 2469-9888

VL - 26

JO - Physical Review Accelerators and Beams

JF - Physical Review Accelerators and Beams

IS - 4

M1 - 042801

ER -

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

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this