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The DESIR facility at SPIRAL2

The DESIR facility at SPIRAL2. SPIRAL2 at GANIL SPIRAL2 Phase 1 and Phase 2 New equipment at SPIRAL2 DESIR facility DESIR physics programme. Bertram Blank CEN Bordeaux-Gradignan. Arctic FIDIPRO-EFES Workshop , Saariselkä, Finland April 20-24, 2009. Existing GANIL facility.

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The DESIR facility at SPIRAL2

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  1. The DESIR facility at SPIRAL2 • SPIRAL2 at GANIL • SPIRAL2 Phase 1 and Phase 2 • New equipment at SPIRAL2 • DESIR facility • DESIR physics programme Bertram Blank CEN Bordeaux-Gradignan Arctic FIDIPRO-EFES Workshop, Saariselkä, Finland April 20-24, 2009

  2. Existing GANIL facility Phase 22013/4 DESIR RIB PRODUCTION S3NFS Accelerator Phase 12012

  3. SPIRAL2 at GANIL

  4. Neutrons for science Atomic & solid state physics Radiobiology & Isotope production Equation of State Role of Isospin Scientific case of SPIRAL2 Heavy and Super Heavy Elements ISOSPIN DEGREES OF FREEDOM IN NUCLEAR FORCES Position of drip-lines N=Z rp-process r-process path Shell structure far from stability Spins&Shapes Spins & Shapes Haloes & Structures in the Continuum www.ganil.fr/research/developments/spiral2/

  5. Gamma Array Particle Array New detectors at SPIRAL2 DESIR S3 NFS AGATA PARIS ACTAR GASPARD FAZIA EXOGAM 2 2006-2007: 19 Letters of Intent, 600 physicists from 34 countries 2008-2009: TDR for big instrumentation at SPIRAL2

  6. DESIR at GANIL Désintégration, excitation et stockage d’ions radioactifs (Decay, excitation and storage of radioactive ions) GANIL – SPIRAL1 (S1) DESIR Production building SPIRAL2 (S2) S3 Low-energy beams from: S1, S2, S3

  7. S1: Low-energy beams from SPIRAL1 Projectile or target fragmentation at 95 MeV/A main interest: very neutron- and proton-rich light nuclei 1+  n+

  8. Converter n 2H UCx IS n 2H Target IS 2H UCx IS HI Target IS S2: Low-energy beams from SPRIAL2 • Fission, fusion • evaporation, DIC • main interest: • fission products • medium-mass • proton-rich nuclei

  9. S3: Low-energy beams from S3 • Fusion-evaporation • reactions at Coulomb • Barrier, DIC • main interest: • very heavy nuclei • N=Z nuclei • very short-lived • isotopes • refractory elements Gas catcher LISOL

  10. RFQ - HRS: Original implementation RFQ-HRS m/Dm = 20000 to DESIR Identification station to CIME SPIRAL2 Production

  11. RFQ - HRS: ALPHA version to DESIR Identification station to CIME RFQ-HRS Optical studies for double HRS are under way: aim is m/Dm = 20000 for 2pmm mrad Teresa Kurtukian Nieto, CENBG

  12. High-intensity RFQ Cooler: SHIRAC Length = 70 cm Radius = 3mm Florian Duval, Gilles Ban, Dave Lunney

  13. Longitudinal energy spread Gas : Helium at 10-2 mbar ΔE ≈ 0.18eV (before re-acceleration)

  14. Emittance Without gas : 12 π.mm.mrad Helium at 10-2mbar : 4.75 π.mm.mrad • 4.75 π.mm.mrad @ 3keV → ≈ 1 π.mm.mrad @ 60keV • Still under investigation : • RF heating • Residual gas effect outside the RFQ section • Charge-exchange process

  15. General purpose LN2 Control room Gas & waste storage IS TAS off-line source 1 Collinear Laser spectroscopy b-NMR off-line source 2 Penning trap + Decay setup MLL trap Double MOT RFQ bun- cher Paul trap DAQ room General purpose Neutron ditch Electronics Desk Access Laser room (mezzanine) DESIR hall Identification station with tape LUMIERE BESTIOL SAS Kitchen + WC (on top of CR) Beam from Level -1 Meeting room (on top of DAQ) Crane access to basement 5 m

  16. Assembly Room 3 Gray Room 2 Electri- city Stor- age 1 Stor- age 2 Gray Room 1 free Assembly Room 1 Assembly Room 2 Control Racks Interfaces HV supplies Crane access to basement 5 m Neutron ditch DESIR hall: level -1 Work shop Radio lab storage Beam from Production building, S3 and SPIRAL1 X Supply Limits of DESIR hall Identification and radioprotection measurements

  17. DESIR work packages • RFQ SHIRAC: Gilles Ban • HRS: Bertram Blank • DESIR building: Franck Delalee • General purpose ion buncher • GPIB + stable ion sources: Pierre Delahaye • Identification station: Philippe Dessagne • Beam transport lines: Francois Le Blanc • Safety and security: Jean-Charles Thomas • Command / Control, diagnostics: Stéphane Grévy

  18. The DESIR Technical Design Report • submitted on December 19, 2008 • presented to SPIRAL2 SAC on January 29, 2009 • strongly supported by SPIRAL2 SAC…. • about 100 pages of technical description of DESIR facility • and its equipment • co-signed by 111 physicists and engineers of 15 countries • contains a general description of buildings and interfaces • description of major installations like traps, spectroscopy • setups etc • report available on DESIR web page (www.cenbg.in2p3.fr/desir)

  19. LUMIERE Laser Utilisation for Measurement and Ionization of Exotic Radioactive Elements F. Le Blanc ,Orsay G. Neyens, Leuven P. Campbell, Manchester • Collinear Laser spectroscopy: • - spins • - magnetic moments • - quadrupole moments • - change of charge radii • b-NMR spectroscopy: • - nuclear gyromagnetic factor • - quadrupole moment • N=50, N=64, N=82, … • Microwave double resonance • in a Paul trap: • - hyperfine anomaly and higher order momenta • (octupole and hexadecapole deformation) • Eu, Cs, Au, Rn, Fr, Ra, Am ….

  20. BESTIOL BEta decay STudies at the SPIRAL2 IsOL facility • Decay studies with halo nuclei • Clustering studies in light nuclei • b-delayed charged-particle emission: e.g. proton-proton correlation • Super-allowed b decays and the standard model of electro-weak interaction • Deformation and Gamow-Teller distribution • 2n correlations, Pn and nuclear structure (r-process) • ... M.J.G. Borge, Madrid b-g setup, B. Blank (Bordeaux) TETRA, Y. Penionzhkevich (Dubna) TAS, J.L. Tain (Valencia)

  21. MLLTRAP • High-accuracy mass measurements • - unitarity of CKM matrix (Vud): 50Mn, 54Co with DM/M~10-10 • - transuranium isotopes (beams from S3): M(Z>102) • In-trap spectroscopy: • - conversion electron and a spectroscopy: shape coexistence • Trap-assisted spectroscopy • - b decay studies of isomerically pure radioactive species P. Thirolf , Munich Set-up being installed at MLL/Garching

  22. KVI atomic trapping facility • New limits on scalar and tensor contributions in the weak interaction • New limits on time-reversal violation in beta decay •  Systematic of atomic parity non-conservation in a long isotopic chain H. Wilschut, Groningen Experimental set-up at KVI

  23. Operation of GANIL/SPIRAL1/SPIRAL2 Standard planning; one production cave DESIR: 29 weeks of RIB/year: 10 weeks of RIB from SPIRAL2, 4 weeks from S3, 15 weeks from SPIRAL1

  24. SPIRAL2 Schedule Phase I Phase II

  25. Thanks for your attention

  26. DESIR financial situation • Main parts: estimated costs fund available • RFQ and HRS « building »: included in SPIRAL2 project • DESIR building + interfaces: 6000 k€ 2000 k€ (CPER) • RFQ: 450 k€ + ? 320 k€ (CPER) • HRS: 2000 k€ + ? - • beam lines: 4500 k€ - • off-line sources + GPIB: 290 k€ - • identification station: 140 k€ - • control / command, diagnostics: 400 k€ together with SPIRAL2

  27. Next steps...... • RFQ: on-going tests, study of “nuclearisation”, study of final version of RFQ • HRS: detailed optical study of new ALPHA version, detailed mechanical study • beam lines: preliminary design, cost estimate, detailed design study • stable ion sources: definition, purchase • GPIB: study and construction • Identification station: preliminary design, detailed design, construction • DESIR building: like SPIRAL2 Phase 2 construction program…. • decision about construction at latest mid 2010 • ……

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