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Test Beam: Calorimetric Wishes…. Goals for calorimeter test beam What’s needed for EFA? Requirements Facilities Detector Software needs Availability of various facilities FNAL, BNL, SLAC, JLab, IHEP, KEK Questions to ourselves Conclusions.

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test beam calorimetric wishes

Test Beam: Calorimetric Wishes…

  • Goals for calorimeter test beam
  • What’s needed for EFA?
  • Requirements
    • Facilities
    • Detector
  • Software needs
  • Availability of various facilities
    • FNAL, BNL, SLAC, JLab, IHEP, KEK
  • Questions to ourselves
  • Conclusions

Steve Magill, Jose Repond, Andre Turcot, Jae Yu*

Jan. 10, 2003

goals for calorimeter test beam
Goals for Calorimeter Test Beam
  • Test of hardware technologies
    • Feasibilities, properties and performances of various detector technologies; aging, linearity, responses, resolutions, etc
    • Feasibilities of digital hadron calorimetry
  • Data for algorithm studies and improvements
    • Energy Flow Algorithm Development
      • Track-cluster association
      • Charged particle energy removal
      • Neutral particle energy measurement
    • Tracking through the calorimeter
    • Determination of optimal cell size
  • Data for simulation validation and improvements
    • Data for shower libraries for realistic simulation of jets
    • Magnetic field dependences

CAL Testbeam

J. Yu

efa specific requirements
EFA Specific Requirements
  • Efficient identification and subtraction of charged track energy
  • Efficient recovery and measurement of neutral particle energy
    • Verification of photon shower shape in ECAL
    • Verification of charged hadron transverse and longitudinal shower shape in ECAL and HCAL
    • Verification of neutral hadron shower shapes
  • Mixture of neutral and charged particles, mimicking jets

CAL Testbeam

J. Yu

slide4

Particle Energies in e++e-ZZ4jets @ 500GeV

<Eg>=3.02 GeV

<EKL>=11.0 GeV

<Ep->=6.28 GeV

CAL Testbeam

J. Yu

tb facility requirements
TB Facility Requirements
  • Beam with wide kinematic ranges and sufficient rates
    • EM particle beams
      • Electron and photon beams
    • Charged and neutral hadron beams
    • Muon beam for calorimeter tracking
    • Momenta of particles: 1 ~ 100 GeV
  • Beam instrumentation
    • Good beam momentum and position measurements
    • Cerenkov counter for PID
  • Sufficient Mechanical Infrastructure
  • Must be available on the right time scale

CAL Testbeam

J. Yu

slide7

Number of Hit Cells vs DR

10 GeV p-

Important for Digital HCAL

CAL Testbeam

J. Yu

slide8

Energy Weighted Transverse Shower Size

10 GeV p-

CAL Testbeam

J. Yu

slide9

Longitudinal Energy Deposit and Hits

80 cm X 80 cm (min.)

X 34 layer HCAL

10 GeV p-

15.5,26

Shower Radius (red) Ampl. Fraction (blue)

7.8,12.6

20 cm X 20 cm

X 30 layer ECAL

Need all 34 layers

3.1,5.2

cm

(front,back)

HCAL

CAL Testbeam

J. Yu

Layer

detector requirements
Detector Requirements
  • Adequate size for sufficient shower containment
    • Preliminary studies by SM & SK show
      • 3 GeV electron shower fully contained in 11 cm x11 cm, 20X0 ECAL
      • 10 GeV pions:
        • 94% of the time in 20 cmx20 cm ECAL fully contains EM energy deposit
        • 1.3 mx1.3 m Hadron calorimeter with ~5~6l can contain 90% of HCAL energy deposit
    • More detailed studies based on single particles and physics would be necessary
  • Flexible cell segmentation by changing readout configuration
    • Number of readout channels
      • 32k for ECAL at 5 mm x 5mm cell size if read out every 1X0
      • 676k for HCAL at 1 cm x 1cm with 40 layer readout
  • Shower leakage detection (both lateral and longitudinal)

CAL Testbeam

J. Yu

detector requirements cont d
Detector Requirements cont’d
  • Tracking system for charged track momentum measurement & Energy Flow Algorithm development
  • Muon system for track association and leakage detection
  • Magnet with high field strength for in-field behavior
  • Adjustable absorber thickness for sampling variation
  • Flexible geometry to support various sensitive gap technology

CAL Testbeam

J. Yu

software needs
Software Needs
  • TB Development
    • Analysis algorithms and software for TB Geometry studies
      • Shower size computation
      • Clustering algorithms
      • Energy conversion and sampling weight
    • Easier simulation of TB Geometry
  • TB Data Taking and Operation
    • Online Monitoring
    • Slow control monitoring
    • Data and code management
    • Data acquisition and reconstruction
      • Track reconstruction
      • Particle ID
    • Calibration tools
  • Quick turnaround for faster feedback for faster reflection into TB programs

CAL Testbeam

J. Yu

test beam facility fermilab
Test Beam Facility: Fermilab
  • Meson Testbeam Facility (MTF)
    • Located at MT6
    • Primary: 120GeV p from MI
    • Particle types: p, K, p, m, e
    • Particle momentum ranges: 5 ~ 120 GeV
    • First beam early 2003
    • Not high priority but seems to be supported
    • Need simultaneous slow extraction scheme with `p production
    • Four available user areas w/ 2 control rooms
    • Five MOUs of with 3 approved
    • Seems to be available for TB
    • Contact: Erik Ramberg
    • MOU’s Needed

CAL Testbeam

J. Yu

testbeam facility slac jlab ihep
Testbeam Facility: SLAC, JLab, IHEP
  • SLAC: End Station A at 10Hz Rep rate, running parasitic on PEP
    • e+: 1 ~ 25 GeV (parasitic on Babar) or 45 GeV with 0.5% momentum byte at the rate of ~1/pulse
    • g: e+ brem, ~1g/pulse, higher energies could be obtained w/ diamond crystal radiators
    • Hadrons: e+ momentum tune at 13 GeV for higher proton yield (0.0044 p/pulse) but mostly e+ and p
  • IHEP, Portvino
    • Proposal at Prague to use 70 GeV p to produce hadrons, electrons and m in energy range up to ~ 50GeV
    • Rep. rate ~0.1Hz in 1.8 sec spill time
    • Hadron energy: 33 - 45 GeV
    • Electron beam: 1 - 45 GeV
    • Available in 2004 and beyond
  • JLab: Not clear but surely not in 2007 ~ 2008 due to energy upgrade
  • KEK: No TB in 2004 - 2007

CAL Testbeam

J. Yu

testbeam facility bnl

B2 Particle Flux

e+

p+

p+

m+

K+

Testbeam Facility: BNL
  • AGS B2
    • Particle types: e, p, K, p, m
    • Beam momentum can be tuned to 0.3~9 GeV/c
    • Nominal momentum byte: 5% FWHM
    • Max flux limited at 2x105/sec for safety
    • Main issue: Funding
      • 2003 operation not in presidential budget
      • Only operates in user contractual agreement with full cost recovery
      • Forming a consortium for operational budget request

CAL Testbeam

J. Yu

questions
Questions
  • How many stages? (I think we need at least two..)
  • When for stage one? 2005? 2006?
  • How long?
  • What program?
  • At which facility?
    • Multiple ones, depending on the needs??
  • Who wants to participate?
  • Construction of detector pieces?
    • When?
    • Who builds the adjustable absorber plate structure?
    • How many readout channels with what segmentation?
  • Details for beam: Energies, rates, instrumentations…
  • Funds for TB
  • A separate Test Beam group for a concerted effort

CAL Testbeam

J. Yu

conclusions
Conclusions
  • Need more thorough studies to determine both hardware and physics based needs of TB
    • Detailed studies to determine detector sizes, segmentation and the impact of minimal configurations
    • Tools are being developed but must be timely and consistent
    • Need common and easy simulation tools for TB geometry
  • A few facilities seem to be available in 2005 – 2006 time scale
  • Time to start organizing toward a concerted TB effort with other detector groups  EFA cannot exist without a tracker
  • A draft report at hand but needs more inputs before a release to wider audience….  July as the target…

CAL Testbeam

J. Yu

questions from gene fisk for discussions
Questions from Gene Fisk for Discussions
  • Short description of the device to test and objectives of the tests
  • Real estate required for the tests (beam line space, assembly space, desk space)
  • Beam conditions wanted/needed (particle types, energies, intensity, spill conditions, etc.)   
  • Instrumentation, cables and DAQ system that you anticipate using
  • Contact person   
  • Dates when beam is needed, dates when you want to be in the beamline
  • Special requirements?  such as:  Cerenkov counters, beam hodoscopes, momentum measurement wire chamber and magnet system,  e or m identifiers, etc.   
  • Where you expect to carry out such tests.

CAL Testbeam

J. Yu