D0 Collaboration Meeting 12-14 September 2001 - PowerPoint PPT Presentation

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D0 Collaboration Meeting 12-14 September 2001

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... circulating gas and fill system with fresh gas from gas trailer. ... Obviously that mentioned parts of muon detector are in sufficiently working state and ... – PowerPoint PPT presentation

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Title: D0 Collaboration Meeting 12-14 September 2001


1
D0 Collaboration Meeting 12-14 September 2001
  • Session 13 September 2001
  • Muon System Software Commissioning
  • Status of MUON Detectors
  • B.Sabirov

2
MDT Status
  • Plan to October Shutdown
  • 1.Completely change gas inside circulating volume
    - octants and pipes blow out circulating gas and
    fill system with fresh gas from gas trailer.
  • 2. As consequence - equalize flow rate for all
    octants.

3
Status of Muon Detectors
  • Content
  • 1. Pixels
  • 2. A-Phi, Cosmic Cap
  • 3. MDT

4
MDT Status
  • MDT status
  • working gas is flowing through all octants in
    re-circulation mode
  • purification systems is running
  • local DAQ tests of all 48 octants is done when no
    collision, and Examine - when collision is
    running
  • timing for all octants adjusted gates, delays -
    optimized values in FLASH memory
  • optimization of operating parameters is done -
    for all octants are fixed working HV value at
    3.2kV and thresholds at 2mkA of dead channels
    for all octants is 74 (.16) out of 48640 wires
    in total all thresholds and masked channels are
    in FLASH memory
  • counting performance vs HV measured for all
    octants and separately for each plane in each
    octant
  • MDT efficiency measured on cosmics with working
    gas - 99
  • MDT FULLY READY FOR RUN2 !

5
Pixels
  • Plan to October Shutdown
  • 1. SFE a) modifications to TOF gate to remove
    hits before 20 ns b) L1 trigger data parity
    check
  • 2. SRC - new cable connector board for L2 signal.

6
Summary
  • Obviously that mentioned parts of muon detector
    are in sufficiently working state and
  • WAITING for RUN II
  • This talk is brief summary of Muon Detectors
    subsystems descriptions granted by S.Doulas
    (A-phi, Cosmic Cap) and I.Vasiljev (Pixels). I
    am greatly thankful to them.
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