• Open Access

Cold vacuum chamber for diagnostics: Analysis of the measurements at the Diamond Light Source and impedance bench measurements

R. Voutta, S. Gerstl, S. Casalbuoni, A. W. Grau, T. Holubek, D. Saez de Jauregui, R. Bartolini, M. P. Cox, E. C. Longhi, G. Rehm, J. C. Schouten, R. P. Walker, M. Migliorati, and B. Spataro
Phys. Rev. Accel. Beams 19, 053201 – Published 18 May 2016

Abstract

The beam heat load is an important input parameter needed for the cryogenic design of superconducting insertion devices. Theoretical models taking into account the different heating mechanisms of an electron beam to a cold bore predict smaller values than the ones measured with several superconducting insertion devices installed in different electron storage rings. In order to measure and possibly understand the beam heat load to a cold bore, a cold vacuum chamber for diagnostics (COLDDIAG) has been built. COLDDIAG is equipped with temperature sensors, pressure gauges, mass spectrometers as well as retarding field analyzers which allow to measure the beam heat load, total pressure, and gas content as well as the flux of particles hitting the chamber walls. COLDDIAG was installed in a straight section of the Diamond Light Source (DLS). In a previous paper the experimental equipment as well as the installation of COLDDIAG in the DLS are described [S. Gerstl et al., Phys. Rev. ST Accel. Beams 17, 103201 (2014)]. In this paper we present an overview of all the measurements performed with COLDDIAG at the DLS and their detailed analysis, as well as impedance bench measurements of the cold beam vacuum chamber performed at the Karlsruhe Institute of Technology after removal from the DLS. Relevant conclusions for the cryogenic design of superconducting insertion devices are drawn from the obtained results.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
10 More
  • Received 1 March 2016

DOI:https://doi.org/10.1103/PhysRevAccelBeams.19.053201

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Accelerators & Beams

Authors & Affiliations

R. Voutta*, S. Gerstl, S. Casalbuoni, A. W. Grau, T. Holubek, and D. Saez de Jauregui

  • IBPT, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, Germany

R. Bartolini, M. P. Cox, E. C. Longhi, G. Rehm, J. C. Schouten, and R. P. Walker

  • Diamond Light Source, Oxfordshire OX11 0DE, England

M. Migliorati

  • Department Energetica, University “La Sapienza”, Via Antonio Scarpa 14, I-00161 Roma, Italy

B. Spataro

  • INFN-LNF, Via E. Fermi, 40 00044 Frascati, Roma, Italy

  • *robert.voutta@kit.edu
  • stefan.gerstl@kit.edu
  • sara.casalbuoni@kit.edu

Article Text

Click to Expand

References

Click to Expand
Issue

Vol. 19, Iss. 5 — May 2016

Reuse & Permissions
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Accelerators and Beams

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 3.0 License. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

×

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×