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STEIN Analysis for CINEMAUsing GEANT4

Seongha ParkKyung Hee University

KHU/SSR, 2011.07.19

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1. Purpose2. Processes3. Requirements4. Current Result5. Future Work & Summery

KHU/SSR, 2011.07.19

Contents of This Talk

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Purpose

1) To confirm one of main payloads of CINEMA, STEIN, input the design of STEIN and load Electric Field for check-ing the trajectories of incident parti-cles

2) Make two parallel plates as deflec-tor of the STEIN and load Electric Field between the two plates to check tra-jectories of incident particles (e-, e+)

KHU/SSR, 2011.07.19

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Processes1. Input geometry

– Input STEIN model : GDML format– Or directly : World Volume, Aluminum Plate

2. Input parameter for analysing– Variety of particle, energy, definition of physics

3. Add contents for tracking– Output change of energy, change of position, etc.

4. Run and get result from GEANT4– Visualize the result and get raw data

KHU/SSR, 2011.07.19

Geometry Parame-ters Tracking Action

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• Action

• Event (Trajectory)

Action

Event 0Step 0 ~ Step 8

Run 0

Run 1

Event 0Event 1Event 2

KHU/SSR, 2011.07.19

Event 0Event 1Event 2

Con’d

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Requirements

• GEANT4.9.4 with GDML library• Low Energy Classes ( Penelope, Livermore : threshold

~250eV)Penelope : Compton, Gamma Conversion, Rayleigh, Photoelectric (g-rays),Ionisation, Bremsstrahlung (e±), AnnihilationLivermore : Compton, Gamma Conversion, Rayleigh, Photoelectric (g-rays),Ionisation, Bremsstrahlung (e- only)Livermore Polarized : Compton, Rayleigh (g-rays)

• STEIN model (GDML format)

KHU/SSR, 2011.07.19

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Current Result

KHU/SSR, 2011.07.19

1. Make an aluminum plate, incident particles are geantino.

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y

z x

Con’d

KHU/SSR, 2011.07.19

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Con’d

KHU/SSR, 2011.07.19

1. Make an aluminum plate, incident particles are geantino

2. The same Geometry, incident particles are electrons

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Con’d

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z x

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Current Result

KHU/SSR, 2011.07.19

1. Make an aluminum plate, incident particles are geantino

2. The same Geometry, incident particles are electrons

3. Change the shape of the plate (rotate 90˚), apply standard physics

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Con’d

KHU/SSR, 2011.07.19

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Con’d

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Current Result

KHU/SSR, 2011.07.19

1. Make an aluminum plate, incident particles are geantino

2. The same Geometry, incident particles are electrons

3. Change the position of the plate (rotate 90˚), apply stan-dard physics

4. Apply low energy physics (Penelope model)

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Con’d

KHU/SSR, 2011.07.19

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Con’d

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Current Result

KHU/SSR, 2011.07.19

1. Make an aluminum plate, incident particles are geantino

2. The same Geometry, incident particles are electrons

3. Change the position of the plate (rotate 90˚), apply stan-dard physics

4. Apply low energy physics (Penelope model)

5. Apply electric field (no consideration of direction and range)

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Con’d

KHU/SSR, 2011.07.19

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Con’d

KHU/SSR, 2011.07.19

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Future Work & Summary

• To simulate with STEIN geometry, up to here, I’ve learn how to use GEANT4 with simple examples. So, from now on,

1. Make a pair of parallel plates

2. Load electric Field between

3. Read the geometry of STEIN and do purpose 2)

KHU/SSR, 2011.07.19