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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
C. Valderanis, I.Efthymiopoulos 3NA61 Collaboration Meeting 11/10/10
C. Valderanis, I.Efthymiopoulos 4
T2 target and first bends (H – plane)
NA61 Collaboration Meeting 11/10/10
C. Valderanis, I.Efthymiopoulos 5
The double spectrometer (V – plane)
NA61 Collaboration Meeting 11/10/10
C. Valderanis, I.Efthymiopoulos 6
Last bends and quads upstream to NA61
NA61 Collaboration Meeting 11/10/10
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
C. Valderanis, I.Efthymiopoulos 8
Toy monte carlo : Geometry
NA61 Collaboration Meeting 11/10/10
Target DegraderPb ions
Rigidity selection
Measurments
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
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
C. Valderanis, I.Efthymiopoulos 11
30GeV A Pb ions at T2 target (2*106) T2 target 4cm C
NA61 Collaboration Meeting 11/10/10
C. Valderanis, I.Efthymiopoulos 12
30GeV A Pb ions at T2 target (2*106) T2 target 4cm C
NA61 Collaboration Meeting 11/10/10
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)
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
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)
C. Valderanis, I.Efthymiopoulos 16
30GeV A Pb ions at T2 target(2*106) T2 target 40cm Be
NA61 Collaboration Meeting 11/10/10
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)
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
C. Valderanis, I.Efthymiopoulos 19
13GeV A Pb ions at T2 target(2*106)T2 target 4cm C
NA61 Collaboration Meeting 11/10/10
C. Valderanis, I.Efthymiopoulos 20
13GeV A Pb ions at T2 target(2*106)T2 target 4cm C ,selection (6,11)
NA61 Collaboration Meeting 11/10/10
C. Valderanis, I.Efthymiopoulos 21
13GeV A Pb ions at T2 target(2*106)T2 target 4cm C ,selection (6,11)
NA61 Collaboration Meeting 11/10/10
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
C. Valderanis, I.Efthymiopoulos 23
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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