Station 4 muid system status
This presentation is the property of its rightful owner.
Sponsored Links
1 / 10

Station-4 MuID System: Status PowerPoint PPT Presentation


  • 76 Views
  • Uploaded on
  • Presentation posted in: General

Station-4 MuID System: Status. Ming X. Liu Los Alamos National Lab. E906 Spectrometer: Bend plane view. Muon ID layers start here, 2X and 2Y ~250*250cm. Our Current Plan. Use drift tubes built by LANL Muon Radiography Team Already built and tested @ LANL Available for E906

Download Presentation

Station-4 MuID System: Status

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Station 4 muid system status

Station-4 MuID System: Status

Ming X. Liu

Los Alamos National Lab

E906 Collaboration Meeting


E906 spectrometer bend plane view

E906 Spectrometer: Bend plane view

Muon ID layers start here, 2X and 2Y

~250*250cm

E906 Collaboration Meeting


Our current plan

Our Current Plan

  • Use drift tubes built by LANL Muon Radiography Team

    • Already built and tested @ LANL

    • Available for E906

  • Installation and commissioning @Fermilab this year

    • Installation, optical survey and cabling

    • Interface to DAQ

      • CAMAC-based TDC “LeCroy 3377”, E906 common items (12)

    • Gas system

      • Ar + Ethane through an alcohol bubbler (4)

      • Flow rate: ~ 1SCFH

      • ~25CF per plane

    • HV and LV

      • ~+2500V, total 4 channels

      • +5/-5.2V, ~1A per module/channel, total 24 channels

    • Calibration and monitoring

      • I, V, T …

E906 Collaboration Meeting


Drift tube module from muon radiography

Drift Tube Module from Muon Radiography

A module consists of 2 staggered rows of 8 tubes,

16 tubes total

~ 4” X 16” X 12’

Each tube is 2” X 12’ with 20 sense wire at +HV

Each module is readout with a Nanometrics N-277 amp/disc card using +-5V power

Close-up of one 16 channel module

E906 Collaboration Meeting


Station 4 muon identifier design

Station 4 Muon Identifier Design

  • 2 X and 2 Y layers, coverage ≥ 250 * 250 cm

  • Aluminum drift tubes for good position resolution  track matching to Station 3 drift chambers

  • Each plane constructed of 2 staggered rows of 2” diameter tubes for excellent efficiency and reasonable channel count

  • Nanometrics amplifier / discriminator electronics with ECL output.

  • Well tested design with 1000’s of operational tubes.

  • Works with a variety of gas mixtures @ ~ +2300V

End view of a 16 tube module

E906 Collaboration Meeting


Existing n277 nanometrics amplifier disc

Existing N277 Nanometrics Amplifier / Disc.

Differential ECL outputs

16 Channels / card

+-5V power, 6 watts

Poor crosstalk but otherwise good performance

56 drift tube modules are instrumented with N277 cards

Input

E906 Collaboration Meeting


Rad large muon tracker at lansce

μRad Large Muon Tracker at LANSCE

6 X and 6 Y layers

48 Modules visible

Arranged for vertical cosmic ray muons

Disassembled and in storage for E906

Will need new support structure for E906

E906 Collaboration Meeting


Measured performance with cosmic rays

Measured Performance with Cosmic Rays

  • Gas : Ar - isobutane 70:30

  • HV = +2300V

  • ~300 micron resolution averaged over entire array

  • ~99.5% efficiency, consistent with tube wall thickness

  • Maximum drift time ~ 1600 ns with this slow gas

  • Nanometrics amplifier / discriminator electronics, threshold set to 1 Volt.

E906 Collaboration Meeting


Summary module and channel counts

SummaryModule and Channel Counts

4 planes required for E906: 2 X and 2 Y, ~250 x 250 cm area

6 modules per plane provides 244 x 366 cm area

384 total channels of electronics, 4 channels of +HV and 24 for +/-LV

24 modules required, have 56 available with electronics

Could increase size of station 4, if useful

momentum

analysis

Target

+

p

1st magnet

sweep

2nd magnet

-

E906 Collaboration Meeting


Issues and to do list

Issues and To Do List

  • Mechanical supporting structure for vertical installation

    • Design and material: ~10k

    • when and where: Fermilab shop this summer?

  • Before shipping to Fermilab

    • Electrical test of all modules, ~1week early this year

    • U-Haul truck, this summer?

  • @Fermilab

    • Mechanical installation, cabling etc, need help on manpower

    • Optical survey, ~1mm precision

    • Interface to DAQ, signal delay etc. Needs help from DAQ group

    • Gas system, HV and LV PS.. Fermilab pool?

  • Calibration, monitoring and offline code

    • Slow control system to monitor I/V/T …

E906 Collaboration Meeting


  • Login