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  Ultra-cold electron target for the Heidelberg TSR

Orlov, D., Lestinsky, M., Sprenger, F., Schwalm, D., Terekhov, A., & Wolf, A. (2006). Ultra-cold electron target for the Heidelberg TSR. In S. Nagaitsev, & R. J. Pasquinelli (Eds.), Beam cooling and related topics: International Workshop on Beam Cooling and Related Topics - COOL05, Galena, Illinois, U.S.A., 18 - 23 September 2005 (pp. 478-487). Melville, NY: American Inst. of Physics.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-86F5-A Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-86F6-8
Genre: Conference Paper

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 Creators:
Orlov, D.1, Author           
Lestinsky, M.1, Author           
Sprenger, F.1, Author           
Schwalm, D.2, Author           
Terekhov, A.S., Author
Wolf, A.1, Author           
Affiliations:
1Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              
2Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907546              

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 Abstract: Merged beams experiments on inelastic electron-ion collisions in ion storage rings can reach very high energy resolution and offer fine control of the collision partners. To optimize the energy resolution, an electron target* was installed at the TSR in addition to the e-cooler. This made it possible to perform electron collision experiments at variable relative energy avoiding the resolution loss caused by the interruption of electron cooling. Furthermore, a strong gain in energy resolution was obtained by using a cryogenic electron source** developed for the TSR target. Here, a GaAs photocathode provides dc electron currents up to about 0.5 mA with an emission energy spread of about 10 meV. In first recombination measurements using this source, performed on HD+, H3+ and Sc18+, low energy resonant structures at milli-eV collision energies revealed unprecedented low transverse and longitudinal electron temperatures of about 0.5 meV and 0.025 meV, respectively. In this talk the performance of the TSR ultra-cold electron target is presented. In addition, the perspectives of photocathode-driven electron coolers operating at very low laboratory energies are discussed.

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Language(s): eng - English
 Dates: 2006
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 282136
 Degree: -

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Title: International Workshop on Beam Cooling and Related Topics - International Workshop on Beam Cooling and Related Topics - COOL 05
Place of Event: Galena, USA
Start-/End Date: 2005-09-18 - 2005-09-23

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Title: Beam cooling and related topics : International Workshop on Beam Cooling and Related Topics - COOL05, Galena, Illinois, U.S.A., 18 - 23 September 2005
Source Genre: Proceedings
 Creator(s):
Nagaitsev, Sergei, Editor
Pasquinelli, Ralph J., Editor
Affiliations:
-
Publ. Info: Melville, NY : American Inst. of Physics
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 478 - 487 Identifier: -

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Title: AIP conference proceedings
Source Genre: Series
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Pages: - Volume / Issue: 821 Sequence Number: - Start / End Page: - Identifier: -