Fluka simulations for secondary ion beams

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Fluka simulations for secondary ion beams. Chrysostomos Valderanis Ilias Efthymiopoulos. Two parallel approaches in building the simulation. Full geometry Includes all active and passive elements of the beam line Tracking is handled by Fluka transport To be used in the future - PowerPoint PPT Presentation

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Fluka simulations for secondary ion beams

Chrysostomos ValderanisIlias Efthymiopoulos

C. Valderanis, I.Efthymiopoulos 2

Two parallel approaches in building the simulation

• Full geometry– Includes all active and passive elements of the

beam line– Tracking is handled by Fluka transport– To be used in the future

• Toy monte carlo– Includes target and degrader– Magnetic rigidity selection in an algorithm– To be used for rate predictions

NA61 Collaboration Meeting 11/10/10

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C. Valderanis, I.Efthymiopoulos 4

T2 target and first bends (H – plane)

NA61 Collaboration Meeting 11/10/10

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The double spectrometer (V – plane)

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Last bends and quads upstream to NA61

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Summary – I : Full geometry

• Dipoles, quadruples, collimators – In working condition

• Missing elements– Target and degrader– Beam instrumentation– Beam pipe

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Toy monte carlo : Geometry

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Target DegraderPb ions

Rigidity selection

Measurments

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Toy monte carlo : Datasets

• [beam] x [target] x [degrader]• [30GeV A] x [4cm C, 40cm Be, 4cm Pb]• [13Gev A] x [4cm C] x [2cm C]

NA61 Collaboration Meeting 11/10/10

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Light ion fragments. Which one?

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• Radionuclides3≤Z ≤7, 6≤A ≤15,T1/2≥10-6s

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30GeV A Pb ions at T2 target (2*106) T2 target 4cm C

NA61 Collaboration Meeting 11/10/10

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30GeV A Pb ions at T2 target (2*106) T2 target 4cm C

NA61 Collaboration Meeting 11/10/10

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30GeV A Pb ions at T2 target(2*106) T2 target 4cm C

NA61 Collaboration Meeting 11/10/10

Bρ=3.33P/Z

All ions

(5,11)

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Ion fragment purity at T2 target

Target, Rigidity window) #all-ions #wanted ions ratio #wanted ions per primary (x10-6 )

(5,11) (-1,5%,1,5%) 324770 500 0.15% 250

(5,11) (-1.0%,1.0%) 216590 331 0.15% 165

(5,11) (-1.5%,1.0%) 275430 428 0.16% 214

• Results for 2 × 106 Pb ions on target– 500x for maximum expected beam intensity from SPS (1× 109)

• T2 target = 4cm C

NA61 Collaboration Meeting 11/10/10

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30GeV A Pb ions at T2 target(2*106)T2 target 4cm C

NA61 Collaboration Meeting 11/10/10

All ions

(5,11)

(6,11)

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30GeV A Pb ions at T2 target(2*106) T2 target 40cm Be

NA61 Collaboration Meeting 11/10/10

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30GeV A Pb ions at T2 target(2*106)T2 target 40cm Be

NA61 Collaboration Meeting 11/10/10

All ions

(5,11)

(6,11)

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Ion fragment purity at T2 target for 30GeV A Pb ions

Target/selected ion #all-ions #-wanted ions ratio #wanted ions per primary (x10-6 )

40cm Be(5,11) 133846 2948 2.2% 1474(6,11) 69322 2316 3.3% 1158

4cm C(5,11) 324770 500 0.15% 250(6,11) 69047 405 0.58% 202

4cm Pb(5,11) 202476 175 0.08% 87(6,11) 29350 133 0.45% 66

• Results for 2 × 106 Pb ions on targetFactor : 500 for maximum expected beam intensity from SPS (1×

109)

NA61 Collaboration Meeting 11/10/10

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13GeV A Pb ions at T2 target(2*106)T2 target 4cm C

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13GeV A Pb ions at T2 target(2*106)T2 target 4cm C ,selection (6,11)

NA61 Collaboration Meeting 11/10/10

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13GeV A Pb ions at T2 target(2*106)T2 target 4cm C ,selection (6,11)

NA61 Collaboration Meeting 11/10/10

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13GeV A Pb ions at T2 target(2*106)T2 target 4cm C ,selection (6,11),2cm degrader

NA61 Collaboration Meeting 11/10/10

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13GeV A Pb ions at T2 target(2*106)T2 target 4cm C ,selection (6,11),2cm degrader

NA61 Collaboration Meeting 11/10/10

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