Injection foil temperature measurements at the SNS accelerator

W. Blokland; N. Evans; C. Luck; A. Rakhman

doi:10.18429/JACoW-HB2018-TUP2WE01

Injection foil temperature measurements at the SNS accelerator

W. Blokland, N. Evans, C. Luck, A. Rakhman

Beam Instrumentation

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

4 Scopus citations

Abstract

The SNS uses charge exchange injection to minimize losses during the accumulation of the accelerated beam in the ring. A stripper foil implements this by removing the electrons from the high intensity H-beam coming from the linac. At a beam power of 1.2 MW, the foil lasts for many weeks, sometimes months. However, given the upgrade to 2.8 MW, it is important to know the current temperature of stripper foil in order to estimate its lifetime for the new beam power and beam size. In this paper, we discuss several methods to measure the temperature of stripper foil exposed to current operating conditions of the SNS accelerator. Given the high radiation in the vicinity of the foil, the uncertainty in the foil's emissivity, and available resources, we chose a two-wavelength pyrometer that is located 40 m from the foil. The pyrometer is composed of two mirrors, a refracting telescope, and two photodiodes. We present the calibration data and the temporally resolved measurements made with this pyrometer.

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	104-109
Number of pages	6
ISBN (Electronic)	9783954502028
DOIs	https://doi.org/10.18429/JACoW-HB2018-TUP2WE01
State	Published - Jul 1 2018
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, world-wide 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). * 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, world-wide 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).

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

Access to Document

10.18429/JACoW-HB2018-TUP2WE01

Cite this

Blokland, W., Evans, N., Luck, C., & Rakhman, A. (2018). Injection foil temperature measurements at the SNS accelerator. In HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams (pp. 104-109). (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-TUP2WE01

Blokland, W. ; Evans, N. ; Luck, C. et al. / Injection foil temperature measurements at the SNS accelerator. 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. 104-109 (HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams).

@inproceedings{7ae8f027f3ae4566aa49d4d2985eabdc,

title = "Injection foil temperature measurements at the SNS accelerator",

abstract = "The SNS uses charge exchange injection to minimize losses during the accumulation of the accelerated beam in the ring. A stripper foil implements this by removing the electrons from the high intensity H-beam coming from the linac. At a beam power of 1.2 MW, the foil lasts for many weeks, sometimes months. However, given the upgrade to 2.8 MW, it is important to know the current temperature of stripper foil in order to estimate its lifetime for the new beam power and beam size. In this paper, we discuss several methods to measure the temperature of stripper foil exposed to current operating conditions of the SNS accelerator. Given the high radiation in the vicinity of the foil, the uncertainty in the foil's emissivity, and available resources, we chose a two-wavelength pyrometer that is located 40 m from the foil. The pyrometer is composed of two mirrors, a refracting telescope, and two photodiodes. We present the calibration data and the temporally resolved measurements made with this pyrometer.",

author = "W. Blokland and N. Evans and C. Luck and A. Rakhman",

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",

year = "2018",

month = jul,

day = "1",

doi = "10.18429/JACoW-HB2018-TUP2WE01",

language = "English",

series = "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 = "104--109",

booktitle = "HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams",

}

Blokland, W, Evans, N, Luck, C & Rakhman, A 2018, Injection foil temperature measurements at the SNS accelerator. 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. 104-109, 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-TUP2WE01

Injection foil temperature measurements at the SNS accelerator. / Blokland, W.; Evans, N.; Luck, C. 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. 104-109 (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

TY - GEN

T1 - Injection foil temperature measurements at the SNS accelerator

AU - Blokland, W.

AU - Evans, N.

AU - Luck, C.

AU - Rakhman, A.

PY - 2018/7/1

Y1 - 2018/7/1

N2 - The SNS uses charge exchange injection to minimize losses during the accumulation of the accelerated beam in the ring. A stripper foil implements this by removing the electrons from the high intensity H-beam coming from the linac. At a beam power of 1.2 MW, the foil lasts for many weeks, sometimes months. However, given the upgrade to 2.8 MW, it is important to know the current temperature of stripper foil in order to estimate its lifetime for the new beam power and beam size. In this paper, we discuss several methods to measure the temperature of stripper foil exposed to current operating conditions of the SNS accelerator. Given the high radiation in the vicinity of the foil, the uncertainty in the foil's emissivity, and available resources, we chose a two-wavelength pyrometer that is located 40 m from the foil. The pyrometer is composed of two mirrors, a refracting telescope, and two photodiodes. We present the calibration data and the temporally resolved measurements made with this pyrometer.

AB - The SNS uses charge exchange injection to minimize losses during the accumulation of the accelerated beam in the ring. A stripper foil implements this by removing the electrons from the high intensity H-beam coming from the linac. At a beam power of 1.2 MW, the foil lasts for many weeks, sometimes months. However, given the upgrade to 2.8 MW, it is important to know the current temperature of stripper foil in order to estimate its lifetime for the new beam power and beam size. In this paper, we discuss several methods to measure the temperature of stripper foil exposed to current operating conditions of the SNS accelerator. Given the high radiation in the vicinity of the foil, the uncertainty in the foil's emissivity, and available resources, we chose a two-wavelength pyrometer that is located 40 m from the foil. The pyrometer is composed of two mirrors, a refracting telescope, and two photodiodes. We present the calibration data and the temporally resolved measurements made with this pyrometer.

UR - http://www.scopus.com/inward/record.url?scp=85081044707&partnerID=8YFLogxK

U2 - 10.18429/JACoW-HB2018-TUP2WE01

DO - 10.18429/JACoW-HB2018-TUP2WE01

M3 - Conference contribution

AN - SCOPUS:85081044707

T3 - HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams

SP - 104

EP - 109

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

PB - Joint Accelerator Conferences Website (JACoW)

T2 - 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, HB2018

Y2 - 17 June 2018 through 22 June 2018

ER -

Blokland W, Evans N, Luck C, Rakhman A. Injection foil temperature measurements at the SNS accelerator. 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. 104-109. (HB2018 - Proceedings of the 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams). doi: 10.18429/JACoW-HB2018-TUP2WE01

Injection foil temperature measurements at the SNS accelerator

Abstract

Publication series

Conference

Funding

Access to Document

Other files and links

Fingerprint

Cite this