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 language | English |
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Title of host publication | 5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016 |
Editors | Dan Faircloth |
Publisher | American Institute of Physics Inc. |
ISBN (Electronic) | 9780735415492 |
DOIs | |
State | Published - Aug 9 2017 |
Externally published | Yes |
Event | 5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016 - Oxford, United Kingdom Duration: Sep 12 2016 → Sep 16 2016 |
Publication series
Name | AIP Conference Proceedings |
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Volume | 1869 |
ISSN (Print) | 0094-243X |
ISSN (Electronic) | 1551-7616 |
Conference
Conference | 5th International Symposium on Negative Ions, Beams and Sources, NIBS 2016 |
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Country/Territory | United Kingdom |
City | Oxford |
Period | 09/12/16 → 09/16/16 |
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).