Unexpected matching insensitivity in DTL of GTA accelerator

Conference · Mon May 01 00:00:00 EDT 1995

OSTI ID:61685

Yuan, V W; Gilpatrick, J D; Johnson, K F; Lysenko, W P; Rusthoi, D P; Sander, O R; Smith, M; Weiss, R

The Intertank Matching Section (IMS) of the Ground Test Accelerator (GTA) contains four variable-field quadrupoles (VFQs) and is designed to match beam exiting the Radio-Frequency Quadrupole to the first tank of the Drift-tube LINAC (DTL-1). By varying the VFQ field strengths to create a range of beam mismatches at the entrance to DTL-1, one can test the sensitivity of the DTL-1 output beam to variations in the DTL-1 input beam. Experimental studies made during commissioning of the GTA indicate an unexpected result: the beam exiting DTL-1 shows little variation for a range of mismatches produced at the entrance. Results of the experiment and simulation studies are presented.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: Department of Defense, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 61685
• Report Number(s): LA-UR--95-1524; CONF-950512--65; ON: DE95011984
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM ACCEPTANCE
BEAM DYNAMICS
BEAM FOCUSING MAGNETS
BEAM TRANSPORT
PARTICLE BOOSTERS