Peter Kodyš, SCTWeek, December 1, 2003peter.kodys@ific.uv.es 1

IFIC, Valencia

Charles University, Prague

Peter Kodyš

Combine Test Beam 2004

SCT Modules in Space

Draft

Peter Kodyš, SCTWeek, December 1, 2003peter.kodys@ific.uv.es 2

IFIC, Valencia

Charles University, Prague

IntroductionMain idea: To use SCT end cap outer modules in position of barrels in x axis.

MethodModel is written in ROOT program as 3DProgram is fully independent of Athena environmentStandard databases is not used but it is possible to connect to it (not useful now)

This is a way how to compare the right setting of geometry in AthenaModel contain tools for simple digitization, clustering, residual histograms

Changes of geometry or module type are possible and simple

Source code is available on the web:http://www.ific.es/~kodys/Simulation/SCTInSpace/SCTInSpace.zip

Peter Kodyš, SCTWeek, December 1, 2003peter.kodys@ific.uv.es 3

IFIC, Valencia

Charles University, Prague

Space SettingModules are in pairs with following setting (next page in graphics):

Distance in x (beam direction):0 (Target), 300 1.pair, 373 2.pair, 447 3.pair, 520 4.pair (in mm)

Shift in y (vertical):Lower module: –29.13mm, upper module: +27.41mm

Rotations:Upper module in angle 10deg in rot axes z (horizontal)Lower module in angle 20deg in rot axes z (horizontal)Upper module in angle – 2.403deg in rot axes x (beam direction)Lower module in angle – 4.695deg in rot axes x (beam direction)

Occupated space: 248 x 136 x 170 mm

Peter Kodyš, SCTWeek, December 1, 2003peter.kodys@ific.uv.es 4

IFIC, Valencia

Charles University, Prague

Basic Views

X axis point 0 (red line) is shifted 400mm from target

Peter Kodyš, SCTWeek, December 1, 2003peter.kodys@ific.uv.es 5

IFIC, Valencia

Charles University, Prague

Details In Beam Intersection Point

Parallel beam in mid of detector pair

Parallel first and last strip (like barrel) in

overlap 3 mm

Detail on top view, red circle check M0 chip and

direction of power kaptons to hybrid

Peter Kodyš, SCTWeek, December 1, 2003peter.kodys@ific.uv.es 6

IFIC, Valencia

Charles University, Prague

Examples Of Histograms

Histogram of hits in module pair (hitmap)

Space residuals on left and right module in pair (different accident angle)

Eta and residuals on detectors in pair, to confirm good statistics

Peter Kodyš, SCTWeek, December 1, 2003peter.kodys@ific.uv.es 7

IFIC, Valencia

Charles University, Prague

Concusions From Pre-Simulations

Left side for module tilted 10deg: space residuals moving in y: -0.04 mmin z: 4.1 mm

Right side for module tilted 20deg: space residuals moving in y: -0.2 mmin z: 8 mm

• Impossible to use simple spacing from crosing strips in module• Link alignment using in TestBeam1999-2003 needed• 20deg titling module will be good example how we eliminate spacing error

Peter Kodyš, SCTWeek, December 1, 2003peter.kodys@ific.uv.es 8

IFIC, Valencia

Charles University, Prague

Simulations - StatusCarlos Escobar: • GeoModule visualization of components for checking geometry• Gean4 examplesZdenka Broklova: • Geant4 examples with joining to digitization• Format of data checkingPeter Kodys:• Instalation of last versions of ATHENA modules (thanks Pavel Reznicek)• GeoModule examples (thanks Grant Gorfine, Thijs)• NOVA database checking of SCT code (nonactual version) (thanks Sasha Rozanov, Pavel Nevski)• NOVA database write new current version of SCT geometry, update olders• NOVA database – prepare combine test beam geometry for SCT• non ATHENA software: make arrangement of CTB in 3D, pre-simulation of tracking, residuals