NuSTAR, FAIR & the UK Community
description
Transcript of NuSTAR, FAIR & the UK Community
![Page 1: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/1.jpg)
NuSTAR, FAIRNuSTAR, FAIR& the UK Community& the UK Community
DL, October,2006
![Page 2: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/2.jpg)
“Facility for Antiproton and Ion Research (FAIR)” :
SIS 100/300
100 m
FAIRFAIRGSI todayGSI today
SIS 18UNILAC
ESR HESR SuperFRS
SuperFRS
RESR CR
NESR
Rare Isotope Prod.target
![Page 3: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/3.jpg)
The Present Rare Isotope Facility at GSI
S IS FRS ESR
ALADIN
LAND
INJECTION FROM UNILAC
PROD UCTION TARG ET
12
3 FRS Branches
Low primary beam intensity (e.g. 108 238U /s) Low transmission for projectile fission fragments (4-10% at the FRS) Low transmission for fragments into the storage ring and to the
experimental areas Limited maximum magnetic rigidity (@ FRS: for U-like fragments, @ ESR:cooler performance and magnets, @ALADIN, to deflect
break-up fragments) Limited space in front of the production target Limited space at the experimental area 1 Limited space at the ESR injection area 2 Beam-line magnets, area 3, are not designed for fragment beams
Limitations
![Page 4: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/4.jpg)
![Page 5: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/5.jpg)
The Super-FRS and its Branches
NuSTAR- [Nuclear Structure Astrophysics and Reactions] Collaboration
R3B
EXLELISE
ILIMA
![Page 6: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/6.jpg)
UK Community and NuSTAR
Groups at Paisley, Glasgow, Edinburgh, York, Manchester, Liverpool, Birmingham, Surrey, Brighton and Daresbury. - theorists at Manchester(4) and Surrey(5) - groups at Strathclyde, Belfast and Cardiff interested in other aspects of FAIR
In total about 75 academics of whom 9 are theorists, 8 or 9 are in other fields and about 45 have their principal interests in FAIR.
Strongly engaged in NuSTAR:- -Chairman of NuSTAR Board—Gelletly (Surrey) -Spokesperson HISPEC----------Podolyak (surrey) -Deputy Spokesperson DESPEC-Woods (Edinburgh) -Spokesperson LASPEC-Campbell (Manchester) -Spokesperson EXL-------Chartier (Liverpool) -Spokesperson ILIMA-----Walker (Surrey)
Grant awarded to build active stopper for DESPEC-Edinburgh/Liverpool/Rutherford.
Strong involvement in RISING, EXL tests, ILIMA tests etc.
Daresbury and Rutherford personnel engaged in electronics and data acquisition.
![Page 7: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/7.jpg)
Contributions - experimentDESPEC Gamma ray array
DESPEC Active stopper
Electronics and data acquisition for NuSTAR and sub-projects
Mechanical arrangements for HISPEC/DESPEC and elsewhere.
Tracking detectors for NuSTAR-for example Diamond detectors (Surrey and Rutherford)
Beamlines – all aspects from design to assembly and test.
Heavy ion spectrometer for R3B – design to assembly and test.
AGATA
Detector development generally-Si, CdZnTe, Diamond etc.
--------------------------------------
![Page 8: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/8.jpg)
The high-energy branch of the Super-FRS:
A universal setup for kinematical complete measurements of
Reactions with Relativistic Radioactive Beams
The R3B experiment:
• identification and beam "cooling" (tracking and momentum measurement, p/p ~10-4)
• exclusive measurement of the final state:
- identification and momentum analysis of fragments
(large acceptance mode: p/p~10-3, high-resolution mode: p/p~10-4)
- coincident measurement of neutrons, protons, gamma-rays, light recoil particles
• applicable to a wide class of reactions
The setup
![Page 9: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/9.jpg)
Decay spectroscopy
(DESPEC)
In-flight spectroscopy
(3 – 100 MeV/u) (HISPEC)
Laser spectroscopy (LASPEC)
Ion traps (MATS)
Neutron capture (NCAP)
Antiprotonic nuclei (Exo+pbar)
Experiments at the low-energy branch
Energy-bunched
slowed-down and
stopped beams
![Page 10: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/10.jpg)
![Page 11: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/11.jpg)
in-beam -ray spectroscopy
-decay spectroscopy
LASER spectroscopy
in-trap ex- periments
Unique feature: RIBs and pbar at (almost) the same place
pbarRIB
Slow beams(100...3 MeV/u)
Stopped beams ( ~ 25meV)
ISOL-type beams (~10...100 keV)
Highly-charged ions
Monoenergetic degrader
Monoenergetic + variable degrader
He-filled ion catcher
EBIS + analyzer
Experiments at the low-energy branch
![Page 12: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/12.jpg)
FAIR-the Complex of Storage Rings
A unique combination where one can apply all the lessons from the SIS-FRS-ESRcomplex and build on it.
CR:-Efficient collection and stochastic pre-cooling to p/p ~ 10-4 in fraction of s
[at 740 MeV/u]
RESR:-beam can be decelerated to 100MeV/u in 1 s
![Page 13: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/13.jpg)
EXL – Exotic Nuclei studied in light-ion induced reactions at the NESR
Schematic view of a cross-section of the EXL detector system, with the details shown on the right.
![Page 14: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/14.jpg)
O.KISELEV, GSI
Setup for EXL test experiment at ESR.
Experimental Storage Ring
Circulating Beam
![Page 15: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/15.jpg)
O.Kiselev et al.
Test of EXL Idea using the ESR - 2006
![Page 16: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/16.jpg)
O.Kiselev et al.
Test of EXL Idea using the ESR - 2006
![Page 17: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/17.jpg)
RISING = Rare ISotope INvestigations at GSI
2 major ‘campaigns’ so far1) Fast (in-beam) Campaign
2) Stopped (isomer/-decay) Campaign
We are in the middle of the isomer part of this campaign. Next year we will be looking at beta decays-in principle the method will be very similar to the experiments to be described in the lectures by Paul Mantica.All the results I will show are preliminary and not fully analysed.
![Page 18: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/18.jpg)
EXL- What information can we expect?
Elastic scattering -nuclear matter radii/distributions -haloes,skins,central densitiesInelastic scattering -surface collective states/electric giant resonances/analysing powers -bulk props.in asymmetric matter/compressibilty/soft modesCharge exchange -GT/spin-dipole resonances/spin-isospin excns. -neutron skin/spin excns./stellar weak interaction ratesTransfer reactions -spectroscopic factors/s.p. particle and hole states/pair transfer -s.p.structure/spin-orbit interaction/pairing interactionQuasi-free scattering -s.p.spectral function/cluster knockout -s.p.structure/nucleon-nucleon correlations/in-medium interactions
●First real programme of reaction studies with exotic nuclei in a ring.●Detector system will handle a wide range of different types of reaction.●Exclusive measurements-hence of interest with stable beams too.
![Page 19: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/19.jpg)
ELISe – Electron-Ion scattering in a Storage Ring
Aims:-a)Charge distributions from (e,e) scattering.
b)Selective excitation of low-lying collective states,giant resonances and new soft modes using (e,e/).
c)Electrofission studies.
d)Studies of (e,e/N) and cluster knockout.
![Page 20: NuSTAR, FAIR & the UK Community](https://reader034.fdocuments.in/reader034/viewer/2022042718/568139a6550346895da143b0/html5/thumbnails/20.jpg)
Experimental Setup
15 Euroball Clusterdetectors
Unmodified figures courtesy of GSI
Fragment Recoil Separator (FRS) + g detector array + CAlorimeter TElescope (CATE)
FRS optimised for required primary fragment
TOF between S1 & S2 (~30m), hence
MW’s (x,y) positions also used for tracking