Ion Beam Propagation Through the FNAL LEBT

Conference · Fri Dec 15 04:00:00 EST 2023

DOI:https://doi.org/10.2172/2246731· OSTI ID:2246731

Jones, Daniel C. ^[1]

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1. Fermilab

The Fermilab 750keV injector sends 25mA H- beam for 30µs at a rep-rate of 15Hz. The beam transmission through the FNAL injector is currently less than 50% from the ion source to the entrance of the drift tube linac. Recently it was uncovered that the primary loss point is within the region prior to the RFQ which houses the solenoid focal elements that match the beam to the RFQ. Recent diagnostic measurements indicate that the cause of the transmission efficiency could be the non-linear effects of the solenoid elements on the beam. An aperture restriction was placed just upstream of the first solenoid element to restrict the beam size and reduce the non-linear effects of the solenoid element.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 2246731
• Report Number(s): FERMILAB-POSTER-23-342-AD; oai:inspirehep.net:2737181
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS