Understanding the source and impact of errant beam loss in the Spallation Neutron Source superconducting Linac

C. C. Peters; A. Aleksandrov; W. Blokland; D. Curry; B. Han; G. Johns; A. Justice; S. Kim; M. Plum; A. Shishlo; T. Southern; M. Stockli; J. Tang; R. Welton

doi:10.18429/JACoW-HB2018-MOP1WB02

Understanding the source and impact of errant beam loss in the Spallation Neutron Source superconducting Linac

C. C. Peters, A. Aleksandrov, W. Blokland, D. Curry, B. Han, G. Johns, A. Justice, S. Kim, M. Plum, A. Shishlo, T. Southern, M. Stockli, J. Tang, R. Welton

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

Abstract

The Spallation Neutron Source (SNS) Linear Accelerator (Linac) delivers a high power proton beam (>1 MW) for neutron production with high neutron availability (>90%). For beam acceleration, the linac has both normal and superconducting RF sections, with the Superconducting Linac (SCL) portion providing the majority of beam acceleration (81 of 96 RF cavities are superconducting). Operationally, the goal is to achieve the highest possible beam energy by maximizing SCL cavity RF gradients, but not at the expense of cavity reliability [1, 2]. One mechanism that has negatively impacted both SCL cavity peak RF gradients and reliability is beam lost into the SCL due to malfunctions of upstream components. Understanding the sources and impact of errant beam on SCL cavity performance will be discussed.

Original language	English
Title of host publication	HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams
Publisher	Joint Accelerator Conferences Website (JACoW)
Pages	48-53
Number of pages	6
ISBN (Electronic)	9783954502028
DOIs	https://doi.org/10.18429/JACoW-HB2018-MOP1WB02
State	Published - Jul 1 2018
Externally published	Yes
Event	61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, HB2018 - Daejeon, Korea, Republic of Duration: Jun 17 2018 → Jun 22 2018

Publication series

Name	HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams

Conference

Conference	61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, HB2018
Country/Territory	Korea, Republic of
City	Daejeon
Period	06/17/18 → 06/22/18

Funding

This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan * This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). † [email protected]

Funders	Funder number
DOE Public Access Plan
United States Government
U.S. Department of Energy

Access to Document

10.18429/JACoW-HB2018-MOP1WB02

Cite this

Peters, C. C., Aleksandrov, A., Blokland, W., Curry, D., Han, B., Johns, G., Justice, A., Kim, S., Plum, M., Shishlo, A., Southern, T., Stockli, M., Tang, J., & Welton, R. (2018). Understanding the source and impact of errant beam loss in the Spallation Neutron Source superconducting Linac. In HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams (pp. 48-53). (HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams). Joint Accelerator Conferences Website (JACoW). https://doi.org/10.18429/JACoW-HB2018-MOP1WB02

Peters, C. C. ; Aleksandrov, A. ; Blokland, W. et al. / Understanding the source and impact of errant beam loss in the Spallation Neutron Source superconducting Linac. HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams. Joint Accelerator Conferences Website (JACoW), 2018. pp. 48-53 (HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams).

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title = "Understanding the source and impact of errant beam loss in the Spallation Neutron Source superconducting Linac",

abstract = "The Spallation Neutron Source (SNS) Linear Accelerator (Linac) delivers a high power proton beam (>1 MW) for neutron production with high neutron availability (>90%). For beam acceleration, the linac has both normal and superconducting RF sections, with the Superconducting Linac (SCL) portion providing the majority of beam acceleration (81 of 96 RF cavities are superconducting). Operationally, the goal is to achieve the highest possible beam energy by maximizing SCL cavity RF gradients, but not at the expense of cavity reliability [1, 2]. One mechanism that has negatively impacted both SCL cavity peak RF gradients and reliability is beam lost into the SCL due to malfunctions of upstream components. Understanding the sources and impact of errant beam on SCL cavity performance will be discussed.",

author = "Peters, {C. C.} and A. Aleksandrov and W. Blokland and D. Curry and B. Han and G. Johns and A. Justice and S. Kim and M. Plum and A. Shishlo and T. Southern and M. Stockli and J. Tang and R. Welton",

note = "Publisher Copyright: {\textcopyright} 2018). Any distribution of this work must maintain attribution to the author(s).; 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, HB2018 ; Conference date: 17-06-2018 Through 22-06-2018",

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Peters, CC, Aleksandrov, A , Blokland, W, Curry, D, Han, B, Johns, G, Justice, A , Kim, S, Plum, M, Shishlo, A, Southern, T, Stockli, M, Tang, J & Welton, R 2018, Understanding the source and impact of errant beam loss in the Spallation Neutron Source superconducting Linac. in HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams. HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Joint Accelerator Conferences Website (JACoW), pp. 48-53, 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, HB2018, Daejeon, Korea, Republic of, 06/17/18. https://doi.org/10.18429/JACoW-HB2018-MOP1WB02

Understanding the source and impact of errant beam loss in the Spallation Neutron Source superconducting Linac. / Peters, C. C.; Aleksandrov, A.; Blokland, W. et al.
HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams. Joint Accelerator Conferences Website (JACoW), 2018. p. 48-53 (HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams).

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

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AU - Aleksandrov, A.

AU - Blokland, W.

AU - Curry, D.

AU - Han, B.

AU - Johns, G.

AU - Justice, A.

AU - Kim, S.

AU - Plum, M.

AU - Shishlo, A.

AU - Southern, T.

AU - Stockli, M.

AU - Tang, J.

AU - Welton, R.

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N2 - The Spallation Neutron Source (SNS) Linear Accelerator (Linac) delivers a high power proton beam (>1 MW) for neutron production with high neutron availability (>90%). For beam acceleration, the linac has both normal and superconducting RF sections, with the Superconducting Linac (SCL) portion providing the majority of beam acceleration (81 of 96 RF cavities are superconducting). Operationally, the goal is to achieve the highest possible beam energy by maximizing SCL cavity RF gradients, but not at the expense of cavity reliability [1, 2]. One mechanism that has negatively impacted both SCL cavity peak RF gradients and reliability is beam lost into the SCL due to malfunctions of upstream components. Understanding the sources and impact of errant beam on SCL cavity performance will be discussed.

AB - The Spallation Neutron Source (SNS) Linear Accelerator (Linac) delivers a high power proton beam (>1 MW) for neutron production with high neutron availability (>90%). For beam acceleration, the linac has both normal and superconducting RF sections, with the Superconducting Linac (SCL) portion providing the majority of beam acceleration (81 of 96 RF cavities are superconducting). Operationally, the goal is to achieve the highest possible beam energy by maximizing SCL cavity RF gradients, but not at the expense of cavity reliability [1, 2]. One mechanism that has negatively impacted both SCL cavity peak RF gradients and reliability is beam lost into the SCL due to malfunctions of upstream components. Understanding the sources and impact of errant beam on SCL cavity performance will be discussed.

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Peters CC, Aleksandrov A , Blokland W, Curry D, Han B, Johns G et al. Understanding the source and impact of errant beam loss in the Spallation Neutron Source superconducting Linac. In HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams. Joint Accelerator Conferences Website (JACoW). 2018. p. 48-53. (HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams). doi: 10.18429/JACoW-HB2018-MOP1WB02

Understanding the source and impact of errant beam loss in the Spallation Neutron Source superconducting Linac

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