Sector multipad prototype of the FMD-MCP detector for ALICE

A. E. Antropov, A. V. Fedotov, G. A. Feofilov, E. K. Izrailov, V. A. Kasatkin, W. Klempt, A. A. Kolojvari, M. P. Larin, V. Lazarev, I. A. Novikov, O. I. Stolyarov, F. A. Tsimbal, T. A. Tulina, F. F. Valiev, L. I. Vinogradov

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We present results of the technology, manufacturing and first tests of a novel MCP-based sector prototype for the forward multiplicity detector for the ALICE experiment at the LHC. The detector provides better than sqrt(M)/M resolution for high multiplicity events, and abou5t 50 ps timing resolution. Two sector MCPs are mounted on a 200 μm ceramics board with the multipad readout integrated with a passive summator. The setup is baked under 300°C and then sealed into a thin wall (200 μm) stainless-steel vacuum sector chamber with a Ti getter keeping a vacuum of 10-5 Torr. A new technology of Al coating is applied in order to reduce the hydrogen leakage through the chamber walls. New multichannel ceramics feedthroughs were also developed for the signal readout and voltage supply. The results of the first in-lab and in-beam tests are discussed.

Original languageEnglish
Pages (from-to)654-659
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume419
Issue number2-3
DOIs
StatePublished - 21 Dec 1998

Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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