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Persistent URL http://purl.org/net/epubs/work/12277233
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Record Id 12277233
Title SPACE CHARGE LIMITS ON THE ISIS SYNCHROTRON INCLUDING THE EFFECTS OF IMAGES
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Abstract The ISIS synchrotron provides a pulsed, 50 Hz, 800 MeV proton beam for spallation neutron production. Each pulse from the synchrotron contains ~2.8E13 protons per pulse (ppp), and at this beam intensity space charge and image forces have a strong effect on transverse beam dynamics. In order to increase intensity in the present machine, and to prepare for possible upgrades running at a higher intensity, studies are underway aimed at understanding the most critical features of such forces and their impact on beam loss. These studies are focused on working point optimisation, including resonances due to space charge and images. A 2D simulation code, Set, has been developed to improve understanding of transverse dynamics at ISIS, using a particle-in-cell algorithm to include space charge and image forces self-consistently. The ISIS synchrotron has profiled vacuum vessels and RF shields which conform to the shape of the beam envelope, and have a distinctive influence on the beam dynamics. Set is specifically designed to include these image forces. A systematic simulation study of possible working points is presented, along with an assessment of the effect on apertures.
Organisation ISIS , ISIS-ACCEL , STFC
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Language English (EN)
Type Details URI(s) Local file(s) Year
Paper In Conference Proceedings In High Intensity and High Brightness Hadron Beams 2012 (HB12), Beijing, China, 17-21 Sep 2012, (2012). http://accelconf.…12/papers/mop257.pdf 2012
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