LEDA beam operations milestone and observed beam transmission characteristics

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Recently, the Low-Energy Demonstration Accelerator (LEDA) portion of the Accelerator Production of Tritium (APT) project reached its 100-mA, 8-hr CW beam operation milestone. LEDA consists of a 75-keV proton injector, 6.7-MeV, 350-MHz CW radio-frequency quadruple (RFQ) with associated high-power and low-level rf systems, a short high-energy beam transport (HEBT) and high-power (670-kW CW) beam dump. During the commissioning phase it was discovered that the RFQ field level needs to be approximately 5-10% higher than design in order to accelerate the full 100-mA beam with low losses. Upon further investigation, we have observed that the beam transmission for the 100-mA low-duty-factor ... continued below

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4 p.

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Rybarcyk, L. September 1, 2000.

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Description

Recently, the Low-Energy Demonstration Accelerator (LEDA) portion of the Accelerator Production of Tritium (APT) project reached its 100-mA, 8-hr CW beam operation milestone. LEDA consists of a 75-keV proton injector, 6.7-MeV, 350-MHz CW radio-frequency quadruple (RFQ) with associated high-power and low-level rf systems, a short high-energy beam transport (HEBT) and high-power (670-kW CW) beam dump. During the commissioning phase it was discovered that the RFQ field level needs to be approximately 5-10% higher than design in order to accelerate the full 100-mA beam with low losses. Upon further investigation, we have observed that the beam transmission for the 100-mA low-duty-factor beam is unexpectedly low for RFQ field levels between 90 and 105% of design. This paper will describe some aspects of LEDA operations critical to achieving the above milestone. Measurement and simulation results focused on understanding this reduced beam transmission for the RFQ operating at design conditions are also presented.

Physical Description

4 p.

Notes

INIS; OSTI as DE00768253

Medium: P; Size: 4 pages

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  • LINAC 2000 Conference, Monterey, CA (US), 08/21/2000--08/25/2000

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  • Report No.: LA-UR-00-3742
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 768253
  • Archival Resource Key: ark:/67531/metadc723003

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • September 1, 2000

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 10, 2017, 8:13 p.m.

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Rybarcyk, L. LEDA beam operations milestone and observed beam transmission characteristics, article, September 1, 2000; New Mexico. (digital.library.unt.edu/ark:/67531/metadc723003/: accessed September 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.