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Aging studies for the large honeycomb drift tube system of the Outer Tracker of HERA-B

  • H. Albrecht
  • , Th S. Bauer
  • , M. Beck
  • , A. Belkov
  • , K. Berkhan
  • , G. Bohm
  • , M. Bruinsma
  • , T. Buran
  • , M. Capeans
  • , J. Chamanina
  • , B. X. Chen
  • , H. Deckers
  • , K. Dehmelt
  • , X. Dong
  • , R. Eckmann
  • , D. Emelianov
  • , S. Fourletov
  • , I. Golutvin
  • , M. Hohlmann
  • , K. Höpfner
  • W. Hulsbergen, Y. Jia, C. Jiang, H. Kapitza, S. Karabekyan, Z. Ke, Y. Kiryushin, H. Kolanoski, S. Korpar, P. Križan, D. Krücker, A. Lanyov, Y. Q. Liu, T. Lohse, R. Loke, R. Mankel, G. Medin, E. Michel, A. Moshkin, J. Ni, S. Nowak, M. Ouchrif, C. Padilla, D. Pose, D. Ressing, V. Saveliev, B. Schmidt, W. Schmidt-Parzefall, A. Schreiner, U. Schwanke, A. S. Schwarz, I. Siccama, S. Solunin, S. Somov, V. Souvorov, A. Spiridonov, M. Starič, C. Stegmann, O. Steinkamp, N. Tesch, I. Tsakov, U. Uwer, S. Vassiliev, I. Vukotic, M. Walter, J. J. Wang, Y. M. Wang, R. Wurth, J. Yang, Z. Zheng, Z. Zhu, R. Zimmermann
  • German Electron Synchrotron
  • National Institute for Subatomic Physics
  • Utrecht University
  • University of Rostock
  • Joint Institute for Nuclear Research
  • University of Oslo
  • Moscow Engineering Physics Institute
  • Tsinghua University
  • Humboldt University of Berlin
  • CAS - Institute of High Energy Physics
  • University of Texas at Austin
  • TU Dortmund University
  • A. Alikhanian Yerevan Institute of Physics
  • Jožef Stefan Institute
  • University of Maribor
  • University of Ljubljana
  • CERN
  • Heidelberg University 
  • University of Hamburg
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Bulgarian Academy of Sciences

Research output: Contribution to journalConference articlepeer-review

9 Scopus citations

Abstract

The HERA-B Outer Tracker consists of drift tubes folded from polycarbonate foil and is operated with Ar/CF4/CO2 as drift gas. The detector has to stand radiation levels which are similar to LHC conditions. The first prototypes exposed to radiation in HERA-B suffered severe radiation damage due to the development of self-sustaining currents (Malter effect). In a subsequent extended R&D program major changes to the original concept for the drift tubes (surface conductivity, drift gas, production materials) have been developed and validated for use in harsh radiation environments. In the test program various aging effects (such as Malter currents, gain loss due to anode aging and etching of the anode gold surface) were observed, and cures by tuning of operation parameters were developed.

Original languageEnglish
Pages (from-to)155-165
Number of pages11
JournalNuclear Inst. and Methods in Physics Research, A
Volume515
Issue number1-2
DOIs
StatePublished - Dec 1 2003
EventProceedings of the International Workshop on Aging Phenomena (AGING 2001) - Hamburg, Germany
Duration: Oct 2 2001Oct 5 2001

Keywords

  • Anode aging
  • Gaseous detectors
  • Malter effect
  • Persistent dark current
  • Plasma corrosion
  • Tracker

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