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