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Norbert Neumeister CERN EP / HEPHY Vienna. Muon PRS meeting January 21 st , 2003. Muon Barrel Geometry Description. Introduction. We are going to move to XML and DDD I had a look at the current geometry description the return yoke is already built, so cross-check with reality!

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Norbert neumeister cern ep hephy vienna

Norbert Neumeister

CERN EP / HEPHY Vienna

Muon PRS meetingJanuary 21st, 2003

Muon Barrel Geometry

Description


Introduction
Introduction

  • We are going to move to XML and DDD

    • I had a look at the current geometry description

    • the return yoke is already built, so cross-check with reality!

    • barrel geometry is more complicated than endcap geometry

  • New Geometry project:

    • Geometry/Muon/

    • MuonGeometry, MuonSensDet, SimulationData, ReconstructionData

  • Simulation – Reconstruction geometry

    • active geometry (chambers)

    • passive geometry (return yoke, iron, coil)  needed for propagation

    • magnetic field geometry  NEW

    • for simulation we use active and passive geometry

    • for reconstruction we use only active geometry

      (only for GEANE propagation the full geometry is used)

  • Geometry description:

    • muon.tz mb.tz, me.tz, xml files, engineering drawings(AutoCAD)

    • describes: coil, return yoke, tail catcher, support structure, chambers

    • structure is not very complicated

    • XML files are readable (understandable)

Norbert Neumeister

HEPHY Vienna


Reality vs simulation
Reality vs. Simulation

Norbert Neumeister

HEPHY Vienna


Details
Details

Norbert Neumeister

HEPHY Vienna


Details1
Details

Norbert Neumeister

HEPHY Vienna


Structure

MBXX

MBXX

MBXX

MBXX

MCXX

Structure

MUON/MB

MCXX central wheel

MBXX 4 non-central wheels

MBXC cables on top of detector

MBCA_x_MB (x = 1-24) cables G4 box (non sensitive)

MCXX

RB1 M_Steel-008 G4Trap

RB11 M_Thick_Steel-008 G4Trap

RB2M_Steel-008 G4Trap

RB22 M_Thick_Steel-008 G4Trap

RB3M_Steel-008 G4Trap

RB33 M_Thick_Steel-008 G4Trap

MYBL_x_MCXX (x = 1-36) G4Box M_Steel-008

MBAT tail catcher G4Box Copper

MBIC

MBBT HB0 in front of first muon station G4Box M_B_Air

this structure can not

be used if the chimneys

are included!

return yoke

Norbert Neumeister

HEPHY Vienna


Central wheel
Central Wheel

MCXX/RB3

simple trapezoids

MCXX/MBAT

simple boxes

MCXX/ MYBL_x_MCXX

simple boxes

Norbert Neumeister

HEPHY Vienna


Central wheel1
Central Wheel

same material?

Norbert Neumeister

HEPHY Vienna


Autocad
AutoCAD

Norbert Neumeister

HEPHY Vienna


Yoke basic shapes
Yoke – Basic Shapes

same

material?

2

reality

1

3

4

trapezoids

+

boxes

1

2

geometry

description

Norbert Neumeister

HEPHY Vienna


Central wheel with chambers
Central Wheel with Chambers

Norbert Neumeister

HEPHY Vienna


Chambers
Chambers

Muon/MB/MCXX

Muon/MB/MBXX

MB1S 12 chambers of station 1

MB2S 12 chambers of station 2

MB3S 12 chambers of station 3

MB4S 6 chambers of station 4

MB5S 2 large chambers on top of station 4

MB6S 2 small chambers at bottom of station 4

MB7S 2 large chambers at bottom of station 4

…”chamber envelops”

Norbert Neumeister

HEPHY Vienna


Central wheel with chambers1
Central Wheel with Chambers

MB5S

MB4S

MB3S

MB2S

MB1S

MB6S

MB7S

Norbert Neumeister

HEPHY Vienna


Central wheel2
Central Wheel

MBCA_4_MB

Norbert Neumeister

HEPHY Vienna


Central wheel3
Central Wheel

Norbert Neumeister

HEPHY Vienna


Details2
Details

Norbert Neumeister

HEPHY Vienna


Problems
Problems

position

of

chambers

should be a

trapezoid and

not a box!

non-magnetic

material!

Norbert Neumeister

HEPHY Vienna


Autocad1
AutoCAD

missing!

Norbert Neumeister

HEPHY Vienna


Problems1
Problems

Norbert Neumeister

HEPHY Vienna


Chamber structure
Chamber Structure

MB1S

MHB1

MHC1 honeycomb structure

MHAA_2_MHB2 electronics minicrates

MHAA_3_MHB2 electronics minicrates

MHAA_1_MHB2 electronics minicrates

MHAA_4_MHB2 electronics minicrates

MB1X outer 2 Z layers

MB1Z inner 2 Z layers

MB1R outer 2 R layers

MB1Y inner 2 R layers

MB1K ?????

MB1L aluminum plates

RP1I inner RPC

RP1O outer RPC

Norbert Neumeister

HEPHY Vienna


Chambers1
Chambers

Norbert Neumeister

HEPHY Vienna


Dt chambers
DT Chambers

12 Layers per DT: 4 z, 8 (r,f)

wire pitch 4.2 cm

honeycomb layer

Position for minicrate (front-end, trigger electronics)

B ~ 1 T

2-4 m

30 cm

4 layers

„non-bending“

qSuperlayer

2 x 4 layers

„bending“ fSuperlayer

drift cell

Norbert Neumeister

HEPHY Vienna


Autocad2
AutoCAD

Norbert Neumeister

HEPHY Vienna


Summary
Summary

  • XML files: malg.xml, mb.xml, me.xml

    • for the time being just a copy of the tz-files

    • chimneys are not included!

    • at least we should check if there are any major problems

  • Responsibilities

    • barrel ???

    • endcaps ???

    • coil, infrastructure ???

    • we need at least one contact person!

  • Work to be done

    • check position of chambers

    • check materials and shapes

    • fix known problems: yoke geometry, (coil?)

    • create magnetic field geometry (Valery Andreev)

Norbert Neumeister

HEPHY Vienna


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