Record performance of and extraction studies with the spallation neutron source H- injector

Martin P. Stockli, B. X. Han, S. N. Murray, T. R. Pennisi, M. Santana, C. M. Stinson, R. F. Welton

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

16 Scopus citations

Abstract

During the past year the Spallation Neutron Source has operated with proton beam powers up to 1.4 MW with good availability. However, after a recent premature target failure the power was reduced to 1 MW for the ∼20-week service cycle of the new target, whereas the subsequent target will be used at 1.2 MW. The ion source and low-energy beam transport deliver 50 to 60 mA H-beams into the RFQ with availbilities of ∼99.5%. The compromised RFQ transmission limits the LINAC beam to ∼35 mA, which is sufficient for 1.4 MW. Our current injector efforts focus on improving reliability and increasing the source service cycles beyond the achived 7 Ah to reduce the venting of the RFQ and to improve the stability of the accelerator operations. In addition, extraction studies show that higher extraction fields improve the RFQ transmission, apparently due to a reduced emittance of the LEBT H-beams.

Original languageEnglish
Title of host publication5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016
EditorsDan Faircloth
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735415492
DOIs
StatePublished - Aug 9 2017
Externally publishedYes
Event5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016 - Oxford, United Kingdom
Duration: Sep 12 2016Sep 16 2016

Publication series

NameAIP Conference Proceedings
Volume1869
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016
Country/TerritoryUnited Kingdom
CityOxford
Period09/12/1609/16/16

Funding

Notice of Copyright 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).

Fingerprint

Dive into the research topics of 'Record performance of and extraction studies with the spallation neutron source H- injector'. Together they form a unique fingerprint.

Cite this