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Title: Measurements of aperture and beam lifetime using movable beam scrapers in Indus-2 electron storage ring

In this paper, the measurements of vertical and horizontal aperture which are available for stable beam motion in Indus-2 at beam energy 2.5 GeV using movable beam scrapers are presented. These beam scrapers are installed in one of the long straight sections in the ring. With the movement of beam scrapers towards the beam centre, the beam lifetime is measured. The beam lifetime data obtained from the movement of vertical and horizontal beam scrapers are analyzed. The contribution of beam loss due to beam-gas scattering (vacuum lifetime) and electron-electron scattering within a beam bunch (Touschek lifetime) is separated from the measured beam lifetime at different positions of the beam scrapers. Vertical and horizontal beam sizes at scrapers location are estimated from the scraper movement towards the beam centre in quantum lifetime limit and their values closely agree with measured value obtained using X-ray diagnostic beamline.
Authors:
; ; ; ; ; ;  [1] ;  [2]
  1. Raja Ramanna Centre for Advanced Technology, Indore 452013 (India)
  2. Bhabha Atomic Research Centre, Mumbai (India)
Publication Date:
OSTI Identifier:
22220214
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 84; Journal Issue: 12; 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; APERTURES; BEAM BUNCHERS; BEAMS; ELECTRON-ELECTRON COLLISIONS; ELECTRON-ELECTRON INTERACTIONS; ELECTRONS; GEV RANGE 01-10; INDUS-2; LIFETIME; SCRAPERS; X RADIATION