Hamburg 2009 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 8: Speicherringe, ICP-MS, Neue Entwicklungen

MS 8.4: Talk

Wednesday, March 4, 2009, 14:45–15:00, VMP 8 R05

The electron target for the CSR — •andrey shornikov¹, alexandr s. jaroshevich², claude krantz¹, klaus blaum¹, andreas wolf¹, and dmitry a. orlov¹ — ¹Max-Planck-Institut für Kernphysik, Heidelberg, Germany — ²Institute of Semiconductor physics, Novosibirsk, Russia

An ultralow energy photoelectron cooler for the novel cryogenic electrostatic storage ring CSR is under development. The electron device will serve as a major tool for electron-ion collision studies and for phase space cooling of 20-300 keV (E/Q, charge number Q) ions in velocity matched electron and ion beams. Electrons in energy range from 165 eV ( matched to 20 keV protons) down to a fraction of eV (matched to heavy molecules of mass up to 160 A/Q) will be confined by 30-150 Gauss guiding magnetic field in a newly developed configuration[1]. The key points related to ultralow energy cooling operation [2] (maximal gun current at the low energies, minimal longitudinal temperature ) have been taken into account and were recently studied by experiments at the TSR e-target. Adiabatic beam transport has been simulated by the TOSCA code. In this talk we present experimental and simulation results as well as the mechanical and cryogenic concept of the CSR electron target.

[1] H. Fadil et al Proc. EPAC2006 pp 1630-1632

[2] D. Orlov et al. Proc COOL05 (2005) pp 478-487