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The outer tracker detector of the HERA-B experiment. Part III: Operation and performance

  • H. Albrecht
  • , T.S. Bauer
  • , M. Beck
  • , K. Berkhan
  • , G. Bohm
  • , M. Bruinsma
  • , T. Buran
  • , M. Capeáns
  • , B.X. Chen
  • , H. Deckers
  • , X. Dong
  • , R. Eckmann
  • , D. Emeliyanov
  • , G. Evgrafov
  • , I. Golutvin
  • , M. Hohlmann
  • , K. Höpfner
  • , W. Hulsbergen
  • , Y. Jia
  • , C. Jiang
  • H. Kapitza, S. Karabekyan, Z. Ke, Yu. Kiryushin, H. Kolanoski, D. Krücker, A. Lanyov, Y.Q. Liu, T. Lohse, R. Mankel, G. Medin, E. Michel, A. Moshkin, J. Ni, S. Nowak, M. Ouchrif, C. Padilla, R. Pernack, A. Petrukhin, D. Pose, B. Schmidt, A. Schreiner, H. Schröder, U. Schwanke, A.S. Schwarz, I. Siccama, K. Smirnov, S. Solunin, S. Somov, V. Souvorov, A. Spiridonov, C. Stegmann, O. Steinkamp, N. Tesch, I. Tsakov, U. Uwer, S. Vassiliev, D. Vishnevsky, I. Vukotić, M. Walter, J.J. Wang, Y.M. Wang, R. Wurth, J. Yang, Z. Zheng, Z. Zhu, R. Zimmermann

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

In this paper we describe the operation and performance of the HERA-B Outer Tracker, a 112 674 channel system of planar drift tube layers. The performance of the HERA-B Outer Tracker system fullfilled all requirements for stable and efficient operation in a hadronic environment, thus confirming the adequacy of the honeycomb drift tube technology and of the front-end readout system. The detector was stably operated with a gas gain of 3 × 104 in an Ar / CF4 / CO2 (65:35:5) gas mixture, yielding a good efficiency for triggering and track reconstruction, larger than 95% for tracks with momenta above 5 GeV / c. The hit resolution of the drift cells was 300-320 μ m and the relative momentum resolution can be described as: σ (p) / p [%] = (1.61 ± 0.02) + (0.0051 ± 0.0006) · p [GeV / c]. At the end of the HERA-B running no aging effects in the Outer Tracker cells were observed. © 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)312-330
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume576
Issue number2-3
DOIs
Publication statusPublished - 21 Jun 2007
Externally publishedYes

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