FAIR (Facility for Antiproton and Ion Research) (Darmstadt, Germany)
description
Transcript of FAIR (Facility for Antiproton and Ion Research) (Darmstadt, Germany)
FAIR (Facility for Antiproton and Ion Research) (Darmstadt, Germany)
low-energy cave0-200 MeV/u
fragmentation/fission
~1GeV/u
fragmentseparator
350m
ring branch
HISPEC/DESPEC
Zsolt Podolyák
PANDAR3B
EXL, ILIMA
HISPEC, DESPEC, LASPEC
Production yields and physics at FAIR:High primary beam intensity ~1012 ion/s for 238UHigh transmission (SuperFRS)
H. Geissel et al. NIM B 204 (2003) 71
FR S
S uper-FR S D egrader
D egrader 1
D egrader 2
Comparison of FRS and Super-FRS
-increase in transmission for fission products (a factor of 10)-cleaner beams due to the higher number of stages
CDR p.65. Some physics questions with radioactive beam
N=82
N=126
H. Grawe, K. Langanke, G. Martinez-Pinedo, to be published.
Larger differences(lack of experimental data)
isotopes of all elements; 0 MeV/u < E <200 MeV/u ions with short lifetimes (>100 ns) beam cocktail or mono isotopic beams isomeric beams
- gamma-ray spectroscopy + +- particle spectroscopy + +
- intermediate energy beams: 50-100 MeV/u- Coulomb barrier beams- decay spectroscopy
Features
HISPEC/DESPEC
Particle tracking (Z,pos.,E)
γ-ray det.
High-resolution In-flight SPECtroscopy (HISPEC)
Charged particle det., plunger
Identification (spectrometer, LYCCA)
Ge Cluster beam
Target chamber
CATE
Ge Miniball
Typically: 100MeV/u, ε=0.06, ∆E/E=0.02
ε=1.3% (1.3MeV)
E=100 MeV/u
ε=2.8% (Lorentz boost)dE/E<2%
HECTOR
RISING => HISPEC
AGATA 1π (demonstrator) at HISPEC
RISING AGATA 1π (demonstrator) (today) ~2011
Efficiency : 2.8% ~15% (10.5%) FWHM: 20 keV 7.6 keV
target-detector distance: 15 cm
Much increased sensitivity
Possibility of angular distribution and polarisation measurements,Coincidence measurements, g-factors (transient field method)Determination of source position (?) (target vs. degrader)
E/A=100 MeV
Several UK groups involved
Requirements for the beam tracking for AGATA
uncertainty (sigma) beta=5% beta=20% beta=50%position (cm) 1.5 0.5 0.3direction (degrees) 2 0.6 0.3velocity module (%) 2.4 0.7 0.3
E. Farnea, F.Recchia, LNL-INFN Ann.Rep. 2003 and private communication.
Identification of reaction products
CATE => LYCCA dE-E dE-E +TOF
Ti nuclei
different masses separated upto A=100
M.Taylor et al.
55Ni(9Be,xn,4p)
LLund-und-YYork-ork-CCologne ologne CACAlorimeter (LYCCA)lorimeter (LYCCA)
Diamond ? • Start TOF n DSSD’s
Light particleenergy detection
Diamond ?• Stop TOF
x DSSD’sparticle energyloss (ΔE)
x CsI detectorsparticle energy(E) detection
DSSD’s: 6cm x 6cm, 32 x 32 strips, 500μm total lab angle (2m separation) ± 2.6°
Two modulesi) LCP detection ii) Fragment identification
CsI’s: 2cm x 2cm, 3 x 3 x 3 array 3cm thick, stops 100 MeV protons
Possibly 13 telescopes for final design
• Fragment identification from ΔE, E, tracking and TOF
beam from Super FRS
(magnetic separator)
First LYCCA Tests in 2007
Rising Array 15 CLUSTERs (7 Ge crystals each)
March 2006
RISING => DESPEC
NEUTRON DETECTOR
DSSD IMPLANTATIONDETECTOR
GE γ-ARRAY
RADIOACTIVEBEAM
DEcay SPECtroscopy (DESPEC)
24 c
m
8 cm
8 x 8 cm128 x 128 strips1 mm (Micron in progress)3 dssd
E
Veto
AIDA: Advanced Implantation Detector ArrayCoordinator: T. Davinson
ww
w.p
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td/A
IDA
Implantation energy measurementDecay energy measurement (several layers)Low threshold: ~40 keV (conversion electron!)Fast recovery (~µs); ASIC
Edinburgh, STFC, Liverpool
Extended configuration(Super-FRS monochromatic)
Compact configuration (Super-FRS achromatic)
Planar Ge Array for DESPEC
24 stacks of 3 DSS-Planar detectors:
Detectors
24
Planar crystals per detector unit
3
Strips per element 8 + 8
Electronics channels 1152
Effective number of voxels
13824UK: Brighton, Edinburgh, Liverpool, Manchester, Paisley, STFC, Surrey, York
Setup A / Target
Super-FRS LEB
Setup B(spectrometer mode)
monoenergeticdegrader
Setup C / stopping cell
MF9
Available overall space
MF9 6000 mm
Setup A 8000 mm
Setup B 5500 mm
Degrader 2000 mm
Setup C 7000 mm
HISPEC
DESPEC
LYCCA
Reactions with Relativistic Radioactive Beams (R3B)
EXotic nuclei studied in Light-ion induced reactions at the NESR storage ring (EXL)
RISING => HISPEC/DESPECContinuous improvement AIDA in ~2010 LYCCA-0 in ~2010 AGATA demonstrator in ~2011? Physics <=> Theory
NUSTAR-UK HISPEC, DESPEC, R3B/EXL, ILIMA, LASPEC Statement of Interest in preparation
Summary