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Q: Fachverband Quantenoptik und Photonik

Q 45: Precision Spectroscopy V - highly charged ions (joint session A/Q)

Q 45.7: Vortrag

Mittwoch, 7. März 2018, 15:30–15:45, K 1.016

Commissioning of a detection system for forward emitted XUV photons at the ESR — M. Bussmann¹, A. Buß², C. Egelkamp², L. Eidam³, V. Hannen², Z. Huang⁴, D. Kiefer⁵, S. Klammes⁵, Th. Kühl^6,7,8, M. Loeser¹, X. Ma⁴, W. Nörtershäuser⁹, H.-W. Ortjohann², R. Sánchez^6,9, M. Siebold¹, Th. Stöhlker^6,7,10, J. Ullmann^7,9,10, J. Vollbrecht², Th. Walther⁵, H. Wang⁴, Ch. Weinheimer², D. Winters⁶, and •D. Winzen² — ¹Helmholtz-Zentrum Dresden-Rossendorf — ²Institut für Kernphysik, WWU Münster — ³Institut für Theorie Elektromagnetischer Felder, TU Darmstadt — ⁴Institute of Modern Physics, CAS Lanzhou — ⁵Institut für Angewandte Physik, TU Darmstadt — ⁶GSI, Darmstadt — ⁷Helmholtz-Institut Jena — ⁸Institut für Physik, Uni Mainz — ⁹Institut für Kernphysik, TU Darmstadt — ¹⁰Institut für Optik und Quantenelektronik, Uni Jena

The Institut für Kernphysik in Münster developed an XUV-photon detection system for laser spectroscopy measurements at the ESR. In a test beam time for laser cooling with ¹²C³⁺-ions at β≈0.47, the ²S_1/2−²P_1/2 and the ²S_1/2−²P_3/2 transitions were investigated to commission the system. The detector features a movable cathode plate which is brought into the vicinity of the beam to collect forward emitted Doppler shifted photons (λ_lab≈93 nm). The photons produce mostly low energetic (<3 eV) secondary electrons which are electromagnetically guided onto an MCP detector. Preliminary results of the beam time will be presented. This work is supported by BMBF under contract number 05P15PMFAA.