Title :
Unexpected matching insensitivity in DTL of GTA accelerator
Author :
Yuan, V.W. ; Sander, O.R. ; Connolly, R.C. ; Gilpatrick, J.D. ; Johnson, K.E. ; Lysenko, W.P. ; Rusthoi, D.P. ; Smith, M. ; Weiss, R.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
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
Keywords :
accelerator RF systems; accelerator magnets; beam handling equipment; electromagnets; ion accelerators; DTL-1; Drift-Tube Linac; GTA accelerator; Ground Test Accelerator; RF system; beam mismatches; intertank matching section; matching insensitivity; radiofrequency quadrupole; simulation studies; variable-field quadrupoles; Acceleration; Impedance matching; Laboratories; Life estimation; Linear particle accelerator; Particle beams; Position measurement; Radio frequency; Testing; US Department of Energy;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505164
