Dresden 2014 – scientific programme
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BE: Beschleunigerphysik
BE 2: Diagnostics and Instrumentation I
BE 2.5: Talk
Monday, March 31, 2014, 16:15–16:30, ZEU 255
Design of a compact setup to determine beam energy by detection of Compton backscattered photons at ANKA — •Cheng Chang1, David Batchelor2, Edmund Hertle1, Erhard Huttel2, Vitali Judin2, Anke-Susanne Müller1,2,3, Michael Nasse3, Marcel Schuh3, and Johannes Steinmann3 — 1IPS, KIT, Karlsruhe — 2ANKA, KIT, Karlsruhe — 3LAS, KIT, Karlsruhe
One of most important parameters of accelerators is their electron beam energy. So far, the method of resonant depolarization was used to accurately determine the energy at ~2.5GeV of the ANKA storage ring, which, however, becomes cumbersome for lower energies. A good alternative is the detection of Compton backscattered photons, generated by laser light scattered off the relativistic electron beam. To achieve compactness and integration into the storage ring, the setup of transverse scattering is proposed instead of conventional head-on collision. The feasibility has been studied by comparison between simulations of Compton backscattered photons by AT and CAIN 2.35 and actual measurement of background radiation with an HPGe (High Purity Germanium) spectrometer. The configuration of the setup is also presented.
This work is funded by the European Union under contract PITN-GA-2011-289191