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Title: Note: Matching index technique for avoiding higher order mode resonance in accelerators: INDUS-2 accelerator as a case study

Resonance between circulating beam frequencies and RF cavity Higher Order Modes (HOMs) of accelerators can lead to coupled-bunch instabilities. Shifting these HOMs to avoid the resonance is a topic of active interest. A study has been carried out for the accelerating cavities of the INDUS-2. For quantitative measure of deciding which modes have to be moved and by how much, we introduce a new index called the matching index (I{sub M}), as a measure of how close a HOM is to the nearest beam mode. Depending on the value of I{sub M}, the operating scenarios are classified as safe and unsafe.
Authors:
;  [1] ;  [2] ;  [3] ;  [4]
  1. Raja Ramanna Centre for Advanced Technology, RRCAT, Indore 452013 (India)
  2. Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai 400076, Mumbai (India)
  3. Bhabha Atomic Research Centre, Mumbai 400085 (India)
  4. (India)
Publication Date:
OSTI Identifier:
22224170
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 84; Journal Issue: 8; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCELERATORS; BEAM BUNCHING; INDUS-2; PARTICLE BEAMS; RESONANCE; RF SYSTEMS