NeuLAND - FAIR

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Sweden Chalmers University: Christian Forssén, Johan Gill, Julius Hagdahl, Andreas Heinz, H˚akan Johansson, Björn Jonson, Thomas Nilsson, Goran Nyman, Natalia Shulgina, Ronja Thies, Staffan Wranne, Mikhail Zhukov KTH Stockholm: Bo Cederwall, Stanislav Tashenov Lund University: Vladimir Avdeichikov, Joakim Cederkall, Pavel Golubev, Lennart Isaksson, Bo Jakobsson CERN: Vladimir Eremin Switzerland The Netherlands KVI: Nasser Kalantar, Ali Najafi, Catherine Rigollet, Branislav Streicher University of Groningen: Jarno Van de Walle United Kingdom CCLRC Daresbury Laboratory: Patrick Coleman-Smith, Marc Labiche, Ian Lazarus, Roy Lemmon, Simon Letts, Vic Pucknell, John Simpson University of Birmingham: Nick Ashwood, Matthew Barr, Martin Freer University of Edinburgh: Tom Davinson, Phil Woods University of Liverpool: Marielle Chartier, J. Cresswell, Simon Gannon, Paul Nolan, M. Norman, J. Sampson, Janet Sampson, D. Seddon, T. Stanios, Jonathan Taylor, J. Thornhill, D. Wells University of Manchester: David Cullen, Sean Freeman University of Surrey: Jim Al-Khalili, Carlo Barbieri, Wilton Catford, William Gelletly, Ron Johnson, Zsolt Podolyak, Patrick Regan, Arnau Rios, Edward Simpson, Paul Stevenson, Jeffrey Tostevin University of York: Charles Barton Argonne National Laboratory: Jerry Nolen EMMI/JINA: Justyna Marganiec USA Michigan State University: Bradley Sherrill, Remco Zegers Texas A&M University Commerce: Carlos Bertulani 6
Contents Executive Summary 11 1. Introduction and Overview 13 1.1. NeuLAND – A Key Instrument of R 3 B for High-Resolution Multi-Neutron Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.2. NeuLAND Design Goals – General Remarks . . . . . . . . . . . . . . . . . 16 2. Physics Scenarios: Requirements for NeuLAND 19 2.1. Evolution of the Collective Response of Exotic Nuclei . . . . . . . . . . . 19 2.2. Dipole Strength at the Particle Threshold . . . . . . . . . . . . . . . . . . 21 2.3. Light Exotic Systems - Unbound States and Multi-Neutron Configurations 22 2.4. Quasi-Free Scattering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.5. Fission and Multifragmentation . . . . . . . . . . . . . . . . . . . . . . . . 26 2.6. Flow and Equation of State . . . . . . . . . . . . . . . . . . . . . . . . . . 27 3. Summary of NeuLAND Prototype Results 29 3.1. Scintillator Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.2. Studies with Fast Protons . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.3. Studies with 31 MeV Electrons . . . . . . . . . . . . . . . . . . . . . . . . 31 3.4. Other Approaches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 4. Monte Carlo Simulations 35 4.1. Overview and Comparison of the Various Simulation Codes . . . . . . . . 35 4.1.1. Simulation Frameworks . . . . . . . . . . . . . . . . . . . . . . . . 35 4.1.2. Neutron Data Validation . . . . . . . . . . . . . . . . . . . . . . . 37 4.2. From a Passive Converter to a Fully-Active Scintillator Concept . . . . . 43 4.3. Effect of Granularity and Timing Properties for a Fully-Active Detector . 45 4.4. Light-Transport Simulations . . . . . . . . . . . . . . . . . . . . . . . . . 48 4.5. Scintillator Studies of Full-Size NeuLAND . . . . . . . . . . . . . . . . . 51 4.5.1. One-Neutron Response . . . . . . . . . . . . . . . . . . . . . . . . 52 4.5.2. Multi-Neutron Response . . . . . . . . . . . . . . . . . . . . . . . . 52 4.5.3. Neutron Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 4.5.4. Physics Cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 5. Technical Specifications and Design Details of NeuLAND 65 5.1. Final Detector Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 7
Page 1 and 2: FAIR/NUSTAR/R 3 B/TDR NeuLAND Techn
Page 3 and 4: Germany EMMI and FIAS: Enrico Fiori
Page 5: INR Moscow: Alexander Botvina Russi
Page 9: B.7. MRPC Solution using Glass as C
Page 12 and 13: Apart from the excellent energy res
Page 14 and 15: processes in the universe, such as
Page 16 and 17: decaying into 24 O plus 4 neutrons
Page 19 and 20: 2. Physics Scenarios: Requirements
Page 21 and 22: e studied at R 3 B at FAIR include
Page 23 and 24: all theoretical calculations predic
Page 25 and 26: at the surface of the nucleus. The
Page 27 and 28: the evolution of fission channels (
Page 29 and 30: 3. Summary of NeuLAND Prototype Res
Page 31 and 32: counts 70 60 50 40 30 20 10 0 15 15
Page 33 and 34: Figure 3.4.: Shown is the time reso
Page 35 and 36: 4. Monte Carlo Simulations Within t
Page 37 and 38: normalized counts normalized counts
Page 39 and 40: GEANT3 interface. Here, we compare
Page 41 and 42: Counts 1000 900 800 700 600 500 400
Page 43 and 44: counts 5 10 4 10 3 10 2 10 10 LAND
Page 45 and 46: incident neutron fully active detec
Page 47 and 48: investigated. Three values for the
Page 49 and 50: spectrum, absorption length, refrac
Page 51 and 52: Counts 600 500 400 300 200 100 with
Page 53 and 54: Since, as discussed above, several
Page 55 and 56: events 800 600 400 200 0 0 200 400
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clusters N 100 50 0 0 500 1000 1500
Page 59 and 60:
In the following section we discuss
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events 15000 10000 5000 input outpu
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events 2000 1500 1000 500 σ = 15 k
Page 65 and 66:
5. Technical Specifications and Des
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construction, or for subsequent rep
Page 69 and 70:
positioning of 50 submodules mounti
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Figure 5.6.: Detector frame with fi
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5.4. Peripheral Systems 5.4.1. Read
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Figure 5.12.: The photo shows the T
Page 77:
6. Radiation Environment and Safety
Page 81 and 82:
8. Calibration 8.1. Calibration wit
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Figure 8.3.: ToF distribution in 10
Page 85:
Figure 8.4.: Event display for seve
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10. Installation procedure, its Tim
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11. Cost and Funding 11.1. Cost Est
Page 94 and 95:
The timeline for milestone 1 includ
Page 96 and 97:
96 2. Sample Tests Random samples o
Page 98 and 99:
PNPI St. Petersburg: G.D. Alkhazov,
Page 100 and 101:
HV 1.$ mm 2$ mm 0+$1-2)-2'.%/ 5%4'.
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Beamline Be exit window P 6 P 3 P 4
Page 104 and 105:
B.3. Design Issues Addressed with 4
Page 106 and 107:
Time [ns] Counts 41 40 39 2200 2000
Page 108 and 109:
Efficiency 100 80 60 40 20 0 7.5 8
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200 AMeV, Erel = 100 keV emitted %
Page 112 and 113:
B.7. MRPC Solution using Glass as C
Page 114 and 115:
114
Page 116 and 117:
[Bot-04] S. Botvina andI.N. Mishust
Page 118 and 119:
[Lip-03] C. Lippmann, PhD Thesis, U
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