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The Silicon Tungsten ECAL

Pictures and schematics

3Dview.png 3Dview.eps3

3DDeadAreas.png 3DDeadAreas.eps3

Slab.png Slab.eps3

ProtoAnglePict.png ProtoAnglePict.eps3

ProtoAngleSchema.png ProtoAngleSchema.eps3

EUDET SiW web pages.



A short introduction

A fine granularity calorimeter with large number of segmentation is proposed as the best solution for the energy flow, lepton identification, photon reconstruction with good precision on energy and direction. On the other side, the coil thicknes is bigger than usal due to the 4 Tesla field needed to maintain the machine background close to the beam pipe. Therefore , the ECAL has to be very compact.

Such a calorimeter could be made of Tungsten-Silicon sandwich. With pad of 1x1 cm and 40 layers, this is a quasi bubble-chamber for the electromagnetic shower.
For this reason, this device is called A TRACKER CALORIMETER . It gives a clean picture of all energy flow objects in all type of events. This solution offers a lot of advantages, compacity,stability, etc.. the main one is the redundancy on the em shower informations. Simulation using GEANT4 lead to think of an energy resolution on electron/photon in the region of Delta E /E = 11% / sqrt(E)

See also the original Calice SiW ECAL web pages.

Topic attachments
I Attachment History Action Size Date Who Comment
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PNGpng 3DProtoH.png r1 manage 731.7 K 2008-07-15 - 14:18 AnnemarieMagnan  
Unknown file formateps3 DeadAreas.eps3 r1 manage 326.0 K 2008-07-15 - 14:20 AnnemarieMagnan  
PNGpng DeadAreas.png r1 manage 398.3 K 2008-07-15 - 14:20 AnnemarieMagnan  
Unknown file formateps3 ProtoAnglePict.eps3 r1 manage 322.0 K 2008-07-15 - 14:28 AnnemarieMagnan  
PNGpng ProtoAnglePict.png r1 manage 373.9 K 2008-07-15 - 14:21 AnnemarieMagnan  
Unknown file formateps3 ProtoAngleSchema.eps3 r1 manage 421.9 K 2008-07-15 - 14:29 AnnemarieMagnan  
PNGpng ProtoAngleSchema.png r1 manage 470.7 K 2008-07-15 - 14:29 AnnemarieMagnan  
Unknown file formateps3 Slab.eps3 r1 manage 98.3 K 2008-07-15 - 14:20 AnnemarieMagnan  
PNGpng Slab.png r1 manage 121.5 K 2008-07-15 - 14:20 AnnemarieMagnan  
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Topic revision: r3 - 2009-02-06 - DanielJeans
 
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