Developing Imaging Calorimeters for a SiD-Flavor Lepton Collider
Jacob SmithLinear Collider Physics School
Ambleside ,England 2009
Gas Electron Multiplier
Resistive Plate
Chamber
8/21/2009 2LCPS 2009, Jacob Smith
ILC HCAL Requirements
• Finely segmented readout on the order of 1 cm2 laterally and longitudinally 50 x 106
• Simple, cheap readout front-end located on detector and highly multiplexing
• Technology able to operate in high magnetic fields• Manageable (radius,cost) coil thin active medium• Active element and electronics perform reliably over
lifetime of experiment 10-20 yrs• Estimated 5000m2 active area cost effective
medium
8/21/2009 3LCPS 2009, Jacob Smith
In The Test BeamFermi National Accelerator Laboratory
Meson Test Beam Facility 120 GeVSecondary Pion Mode
Single Layer GEM8 Layer RPC
8/21/2009 4LCPS 2009, Jacob Smith
8/21/2009 5LCPS 2009, Jacob Smith
RPC Short Term Rate Capabilities
Δt [ms] Δt [ms]
Effici
ency
%
Coun
ts
8/21/2009 6LCPS 2009, Jacob Smith
B.Bilki et al., ‘Measurement of the Rate Capability of Resistive Plate Chambers’, ArXiV 0901.4371, submitted to JINST.
Incident Beam
xy
z
DCAL ASICs
RPC
DataConcentrator
Serial LinesData, Control, Trigger
DCAL ASICs
RPC
DataConcentrator
Serial LinesData, Control, Trigger
1 m
~30 cm
40+ total layers400 k channels
RPC 1 m3 Test Beam
24Each 64 pads
8/21/2009 7LCPS 2009, Jacob Smith
8/21/2009
Synergy of Analysis: 1m3
CALICE daq
CALICE binaryQuick event building
Final event building
c++ c++
ASCIIdata
binarydata
Fortrananalysis
C++analysis
Test beamRun decision
‘Online analysis’
Eventdisplay
Test beamRun decision
binarydata lcio
Analysis
‘Offline analysis’
Conditionsdata
lccdc++marlin
ASCIIdata
Educational purposes only, Previousely presentat at CALICE TB Metting June 098
Future Plans1. 1m3 and 3m3 simulations
1. GEANT4/Mokka(?)1. Construction of 1m3 RPC
– Write event builder, incorporate with CALICE sw– Cosmic Ray Test Stand (as layers/parts come)
2. Test Beam (shifts)3. Data Analysis (offline analysis)4. Write Papers (5+)
4. Calibration (muons, pions, multiplicity, efficiency), electron response, hadronic shower response (shower shape, response, longitudinal development)
5. Get PhD!
8/21/2009 9LCPS 2009, Jacob Smith