Test Beam at Fermilab 2008-2009

The CALICE Test Beam at Fermilab

The CALICE collaboration is developing  prototype calorimeters for the International Linear Collider. The apparatus is now in the Meson Test Beam Facility (MTBF) at Fermilab. It contains an electromagnetic calorimeter (ECAL), hadronic calorimeter (HCAL) and a tail catcher/muon tracker (TCMT). Data is being taken with electron, proton, muon, and pion beams.

The Apparatus

  • The ECAL has 30 layers which are 24 radiation lengths in depth, with 1 cm2 readout segments for its transverse granularity.
  • HCAL, located behind the ECAL, has 38 detector layers with 3 x 3 cm2 tiles in the center, surrounded by 6 x 6 cm2 tiles and 12 x 12 cm2 tiles.  It is  4.5 ë  deep.
  • TCMT sits behind the HCAL, has 16 layers each containing 20 scintillator strips (1 m by 5cm), and has an interaction length of 6 ë; the strip are oriented perpendicular to each other in successive layers.

Materials

  • The ECAL uses silicon-tungsten (Si-W) wafers as readout segments.
  • The HCAL and TCMT use plastic scintillator with Silicon Photo Multipliers (SiPM) as the photodetectors.
  • The SiPMs do not  require magnetic shielding (unlike standard photo-multiplier tubes).

The Purpose

  • To collect a reference data sample to compare to the CERN data
  • To accumulate low energy (1-5 GeV) pion data (not done at CERN)
  • To provide a dataset which would allow for direct performance comparisons between different technologies in the same environment

Data

FNAL
MTBF
May 2008
complete
July 2008
tentative
2009
tentative
Particle
p, e–(e+), π–
(π+), μ–(μ+),
p, e–(e+), π–(π+),
μ–(μ+),
data collection with gaseous hadron calorimeters
Energy (GeV)
1 – 120
1 – 120
Angles
0, 10, 30
0, 10, 15, 20, 30

 

Apparatus

 

event chart



Muons

Muons


Pions

pions


-15 GeV Pions

-15 GeV Pions


Electrons

Electrons


photo

Test beam

control room

ECAL TMCT