München 2019 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 15: Poster session
AKBP 15.3: Poster
Donnerstag, 21. März 2019, 16:30–18:00, Durchgangshalle
impedance characterization of a section of SPS using SSC method — •Shahnam Gorgi Zadeh1, Rishab Dev1, Christine Vollinger2, and Ursula van Rienen1 — 1University of Rostock, Albert Einstein Str.2, 18059 Rostock, Germany — 2CERN, Geneva, Switzerland
The High-Luminosity LHC (HL-LHC) project demands the upgrade of the LHC injector chain in order to produce beams with higher intensities [1]. As a part of the injector chain upgrade, the beam coupling impedance of the Super Proton Synchrotron (SPS) has to be determined and optimized to avoid beam instability issues. In that context, components with high contribution to the impedance of SPS have to be recognized and minimized. The common approach is to study the impedance contribution of each element in the ring separately. However, it is not an accurate approach as the neighbouring elements may couple to each other and form multi-component modes. We are employing the State Space Concatenation method (SSC) [2], which is a numerical approach for simulating a long structure by decomposing it into its individual components. In this poster, the SSC method will be used to calculate the eigenmodes of a long section of SPS and modes with high impedance will be identified.
This research is funded by the Bundesministerium für Bildung und Forschung (BMBF) under Grant No. 05H18HRRB1.
[1] LHC Injector Upgrade, Technical Design Report - Volume 1: Protons, CERN-ACC-2014-0337 -15 December 2014
[2] T. Flisgen, PhD thesis, University of Rostock, 2015