Fluka simulations for secondary ion beams
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Transcript of Fluka simulations for secondary ion beams
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Fluka simulations for secondary ion beams
Chrysostomos ValderanisIlias Efthymiopoulos
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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 3NA61 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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C. Valderanis, I.Efthymiopoulos 5
The double spectrometer (V – plane)
NA61 Collaboration Meeting 11/10/10
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C. Valderanis, I.Efthymiopoulos 6
Last bends and quads upstream to NA61
NA61 Collaboration Meeting 11/10/10
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C. Valderanis, I.Efthymiopoulos 7
Summary – I : Full geometry
• Dipoles, quadruples, collimators – In working condition
• Missing elements– Target and degrader– Beam instrumentation– Beam pipe
NA61 Collaboration Meeting 11/10/10
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C. Valderanis, I.Efthymiopoulos 8
Toy monte carlo : Geometry
NA61 Collaboration Meeting 11/10/10
Target DegraderPb ions
Rigidity selection
Measurments
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C. Valderanis, I.Efthymiopoulos 9
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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C. Valderanis, I.Efthymiopoulos 10
Light ion fragments. Which one?
NA61 Collaboration Meeting 11/10/10
• Radionuclides3≤Z ≤7, 6≤A ≤15,T1/2≥10-6s
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C. Valderanis, I.Efthymiopoulos 11
30GeV A Pb ions at T2 target (2*106) T2 target 4cm C
NA61 Collaboration Meeting 11/10/10
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C. Valderanis, I.Efthymiopoulos 12
30GeV A Pb ions at T2 target (2*106) T2 target 4cm C
NA61 Collaboration Meeting 11/10/10
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C. Valderanis, I.Efthymiopoulos 13
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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C. Valderanis, I.Efthymiopoulos 14
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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C. Valderanis, I.Efthymiopoulos 15
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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C. Valderanis, I.Efthymiopoulos 17
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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C. Valderanis, I.Efthymiopoulos 18
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
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)
NA61 Collaboration Meeting 11/10/10
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C. Valderanis, I.Efthymiopoulos 22
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