New design of the SNS MEBT chopper deflector

A. Aleksandrov; C. Deibele; T. Roseberry

doi:10.1109/PAC.2007.4440908

New design of the SNS MEBT chopper deflector

A. Aleksandrov, C. Deibele, T. Roseberry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

6 Scopus citations

Abstract

The chopper system for the Spallation Neutron Source (SNS) provides a gap in the beam for clean extraction from the accumulator ring. It consists of a pre-chopper in the low energy beam transport and a faster chopper in the medium energy beam transport (MEBT). The original "meander line" design of the MEBT chopper deflector was successfully tested with low power beam during the SNS linac commissioning but turned out to be unsuitable for high power beam operation due to poor cooling of the copper strip line through the dielectric substrate. We developed a new deflecting structure, with higher deflection efficiency and with rise and fall time easily customizable to match the available high voltage pulse generator. In this paper we describe design, implementation and beam tests results of the new MEBT chopper deflector.

Original language	English
Title of host publication	Proceedings of the IEEE Particle Accelerator Conference, PAC07
Pages	1817-1819
Number of pages	3
DOIs	https://doi.org/10.1109/PAC.2007.4440908
State	Published - 2007
Event	IEEE Particle Accelerator Conference, PAC07 - Albuquerque, NM, United States Duration: Jun 25 2007 → Jun 29 2007

Publication series

Name	Proceedings of the IEEE Particle Accelerator Conference

Conference

Conference	IEEE Particle Accelerator Conference, PAC07
Country/Territory	United States
City	Albuquerque, NM
Period	06/25/07 → 06/29/07

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10.1109/PAC.2007.4440908

Cite this

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title = "New design of the SNS MEBT chopper deflector",

abstract = "The chopper system for the Spallation Neutron Source (SNS) provides a gap in the beam for clean extraction from the accumulator ring. It consists of a pre-chopper in the low energy beam transport and a faster chopper in the medium energy beam transport (MEBT). The original {"}meander line{"} design of the MEBT chopper deflector was successfully tested with low power beam during the SNS linac commissioning but turned out to be unsuitable for high power beam operation due to poor cooling of the copper strip line through the dielectric substrate. We developed a new deflecting structure, with higher deflection efficiency and with rise and fall time easily customizable to match the available high voltage pulse generator. In this paper we describe design, implementation and beam tests results of the new MEBT chopper deflector.",

author = "A. Aleksandrov and C. Deibele and T. Roseberry",

year = "2007",

doi = "10.1109/PAC.2007.4440908",

language = "English",

isbn = "1424409179",

series = "Proceedings of the IEEE Particle Accelerator Conference",

pages = "1817--1819",

booktitle = "Proceedings of the IEEE Particle Accelerator Conference, PAC07",

note = "IEEE Particle Accelerator Conference, PAC07 ; Conference date: 25-06-2007 Through 29-06-2007",

}

Aleksandrov, A , Deibele, C & Roseberry, T 2007, New design of the SNS MEBT chopper deflector. in Proceedings of the IEEE Particle Accelerator Conference, PAC07., 4440908, Proceedings of the IEEE Particle Accelerator Conference, pp. 1817-1819, IEEE Particle Accelerator Conference, PAC07, Albuquerque, NM, United States, 06/25/07. https://doi.org/10.1109/PAC.2007.4440908

TY - GEN

T1 - New design of the SNS MEBT chopper deflector

AU - Aleksandrov, A.

AU - Deibele, C.

AU - Roseberry, T.

PY - 2007

Y1 - 2007

N2 - The chopper system for the Spallation Neutron Source (SNS) provides a gap in the beam for clean extraction from the accumulator ring. It consists of a pre-chopper in the low energy beam transport and a faster chopper in the medium energy beam transport (MEBT). The original "meander line" design of the MEBT chopper deflector was successfully tested with low power beam during the SNS linac commissioning but turned out to be unsuitable for high power beam operation due to poor cooling of the copper strip line through the dielectric substrate. We developed a new deflecting structure, with higher deflection efficiency and with rise and fall time easily customizable to match the available high voltage pulse generator. In this paper we describe design, implementation and beam tests results of the new MEBT chopper deflector.

AB - The chopper system for the Spallation Neutron Source (SNS) provides a gap in the beam for clean extraction from the accumulator ring. It consists of a pre-chopper in the low energy beam transport and a faster chopper in the medium energy beam transport (MEBT). The original "meander line" design of the MEBT chopper deflector was successfully tested with low power beam during the SNS linac commissioning but turned out to be unsuitable for high power beam operation due to poor cooling of the copper strip line through the dielectric substrate. We developed a new deflecting structure, with higher deflection efficiency and with rise and fall time easily customizable to match the available high voltage pulse generator. In this paper we describe design, implementation and beam tests results of the new MEBT chopper deflector.

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U2 - 10.1109/PAC.2007.4440908

DO - 10.1109/PAC.2007.4440908

M3 - Conference contribution

AN - SCOPUS:51349127233

SN - 1424409179

SN - 9781424409174

T3 - Proceedings of the IEEE Particle Accelerator Conference

SP - 1817

EP - 1819

BT - Proceedings of the IEEE Particle Accelerator Conference, PAC07

T2 - IEEE Particle Accelerator Conference, PAC07

Y2 - 25 June 2007 through 29 June 2007

ER -

New design of the SNS MEBT chopper deflector

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