Stabilized operation of the Spallation Neutron Source radio-frequency quadrupole
The Spallation Neutron Source (SNS) radio-frequency quadrupole (RFQ) had resonance control instabilities at duty factors higher than approximately 4%. Systematic investigations have been carried out to understand the cause of the instability and to ensure the operational stability of the RFQ. The mo...
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Series: | Physical Review Special Topics. Accelerators and Beams |
Online Access: | http://doi.org/10.1103/PhysRevSTAB.13.070101 |
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doaj-1d0119903de64b18b16dee582deab2c52020-11-24T22:10:08ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022010-07-0113707010110.1103/PhysRevSTAB.13.070101Stabilized operation of the Spallation Neutron Source radio-frequency quadrupoleSang-ho KimAlexander AleksandrovMark CroffordJohn GalambosPaul GibsonTom HardekStuart HendersonYoon KangKay KasemirCharles PetersDavid ThompsonMartin StockliDerrick WilliamsThe Spallation Neutron Source (SNS) radio-frequency quadrupole (RFQ) had resonance control instabilities at duty factors higher than approximately 4%. Systematic investigations have been carried out to understand the cause of the instability and to ensure the operational stability of the RFQ. The most critical source of the instability is revealed to be an interaction between hydrogen released by beam bombardments and the RFQ rf field resulting in a discharge, which consumes additional rf power and could cause the RFQ to operate in an unstable region. This paper reports improvement of the SNS RFQ operational stability based on the findings during the SNS operation.http://doi.org/10.1103/PhysRevSTAB.13.070101 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sang-ho Kim Alexander Aleksandrov Mark Crofford John Galambos Paul Gibson Tom Hardek Stuart Henderson Yoon Kang Kay Kasemir Charles Peters David Thompson Martin Stockli Derrick Williams |
spellingShingle |
Sang-ho Kim Alexander Aleksandrov Mark Crofford John Galambos Paul Gibson Tom Hardek Stuart Henderson Yoon Kang Kay Kasemir Charles Peters David Thompson Martin Stockli Derrick Williams Stabilized operation of the Spallation Neutron Source radio-frequency quadrupole Physical Review Special Topics. Accelerators and Beams |
author_facet |
Sang-ho Kim Alexander Aleksandrov Mark Crofford John Galambos Paul Gibson Tom Hardek Stuart Henderson Yoon Kang Kay Kasemir Charles Peters David Thompson Martin Stockli Derrick Williams |
author_sort |
Sang-ho Kim |
title |
Stabilized operation of the Spallation Neutron Source radio-frequency quadrupole |
title_short |
Stabilized operation of the Spallation Neutron Source radio-frequency quadrupole |
title_full |
Stabilized operation of the Spallation Neutron Source radio-frequency quadrupole |
title_fullStr |
Stabilized operation of the Spallation Neutron Source radio-frequency quadrupole |
title_full_unstemmed |
Stabilized operation of the Spallation Neutron Source radio-frequency quadrupole |
title_sort |
stabilized operation of the spallation neutron source radio-frequency quadrupole |
publisher |
American Physical Society |
series |
Physical Review Special Topics. Accelerators and Beams |
issn |
1098-4402 |
publishDate |
2010-07-01 |
description |
The Spallation Neutron Source (SNS) radio-frequency quadrupole (RFQ) had resonance control instabilities at duty factors higher than approximately 4%. Systematic investigations have been carried out to understand the cause of the instability and to ensure the operational stability of the RFQ. The most critical source of the instability is revealed to be an interaction between hydrogen released by beam bombardments and the RFQ rf field resulting in a discharge, which consumes additional rf power and could cause the RFQ to operate in an unstable region. This paper reports improvement of the SNS RFQ operational stability based on the findings during the SNS operation. |
url |
http://doi.org/10.1103/PhysRevSTAB.13.070101 |
work_keys_str_mv |
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