1 / 17

SPES Project S elective P roduction of E xotic S pe cies

SPES Project S elective P roduction of E xotic S pe cies. Gianfranco Prete LNL-INFN On behalf of the SPES Collaboration. SPES ISOL facility at LNL. SPES ISOL facility Proton induced fission on UCx 10 13 fission/s.

soleil
Télécharger la présentation

SPES Project S elective P roduction of E xotic S pe cies

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SPESProject SelectiveProductionofExoticSpecies Gianfranco Prete LNL-INFN On behalf of the SPES Collaboration

  2. SPES ISOL facility at LNL SPES ISOL facility Proton induced fission on UCx 1013 fission/s A second generation ISOL facility for neutron-rich ion beams and an interdisciplinary research center SelectiveProduction of ExoticSpecies ISOL target 1 (8kW) Proton driver Proton and neutron applications Charge Breeder HV platform 260kV Exotic beam transfer to PIAVE-ALPI ISOL target 2 EXCYT at LNS High Resolution Mass Spectrometer Isol target 150W 8Li, 11C, 21Na, 25Al, 27Si

  3. Besprovany Levit PLB 217(1989)1 Z N n-rich ndeficient Neutron Rich Isotopes A: 80-160 SPES RIB INTENSITY: 107-109 exotic ions/s 10-15 MeV/amu on the experimental target Understand nuclei out of the stability valley 114 Super Heavy stability ??? 184 Limiting T r-process path SPES beams Evolution of shell nuclear structure Isospin & level desity Neutron Drip Line EXCYT beams ? Halo nuclei Borromean nuclei 11Li Pigmy resonance

  4. SPES strategy Exotic nuclei ISOL facility for Neutron rich nuclei by U fission 1013 f/s high purity beam Reacceleration up to >10 MeV/u Applications Proton and neutron facility for applied physics Material science & Medical applications Proton Beam: 70MeV 0.5mA (cyclotron) 5MeV 30mA (RFQ) Neutron production: Fast n 1014 n/s Thermal n 109 n s-1 cm-2 a g d b FIRST PRIORITY OF THE SPES PROJECT

  5. The LNL accelerators PIAVE HI Injector AN2000 2 MV S P E S (Selective production of exotic species) ISOL facility & applied physics ALPI Linac 40 MVeq Available area for EURISOL construction CN 7 MV Tandem XTU 15 MV

  6. Transnational access at LNL-LNS in the 7 FP Nuclear physics experiments at 5-10 MeV/u Accelerators: Tandem (LNL-LNS) Superconductive LINAC (LNL) Superconductive Cyclotron (LNS) ISOL facility EXCYT (LNS) Beam time > 10000 h/year 50 LoIs 312 potential external users from 15 countries (60% LNL, 40% LNS)

  7. High Current Cyclotron Proton/neutron irradiation: HALL #2 Cyclotron vault Proton/neutron irradiation: HALL #1 Main Characteristics: Beams p ENERGY 35-70 MeVCurrent 750 mA Extracted Beams Dual Port Exit 300-500mA Beam Loss < 5% Affidability 5000 hours/year First exit port Second exit port Cave ISOL #1 Cave ISOL #2

  8. UCx emissivity measurement The SPES target prototype UCx target procuction 40 mm Graphite Window UCx Disk Graphite Dumpers SPES target-ion-source Front End SEM Characterization Graphite Box

  9. SPES Target Preliminary data of HRIBF experiment Experiment March 2010 Proton energy = 40MeV ISOL target operated at 2000°C . Ionization and extraction with 1+ Plasma Source. Isotopes measured at the tape system. preliminary For expected beam on target should be considered: 200microA proton current and a transport efficiency of 2-5% Ing. S. Corradetti PHD

  10. The ALPI post accelerator Expected SPES energies Linac upgrade & high energy stripper 30% efficiency • Superconductinglinac based on QW Resonators • 2003: Up graded to Veq ~ 40 MV - Nb/Cu sputtered cavities or bulk Nb cavities; 2009: 48MV • 2010: Low Beta RF upgrade to 5MV/m • Energies up to 10-12 MeV/A for A=130 beams After linac upgrade Actual linac Coulomb barrier on Pb

  11. Available INSTRUMENTATION Nuclear structure research - High spin states - Collectivity and shell model - Isospin symmetries - Isospin mixing in N=Z nuclei - Spectroscopy at the dripline - Shell stability and evolution in neutron rich nuclei - Symmetries at the critical point - Rotational damping GASP Reaction dynamics research AGATA demonstrator PRISMA and PISOLO • Multinucleon transfer - Nuclear superfluidity (pair transfer) - Elastic and inelastic scattering - Near and sub-barrier fusion Gamma spectrometer and ancillary det. Large acceptance mass spectrometer EXOTIC GARFIELD and 8πLP - Inverse kinematics - Break up processes - Quasi elastic scattering with light ions produced in secondary reactions CHIMERA (from LNS to SPES) - Multifragmentation at low excitation energies - Nuclear level density - Collective modes of excitations 4π strip detector Gas target Large solid angle particle detectors

  12. NEW detectors: Spiral2pp - SPES NEDA and TRACE The FAZIA Initiative New generation of particle identification detector Neutrons and Light Particles AGATA ancillaries Siliconix n-detectors development

  13. The SPES collaborations network TRIUMF- ISAC KEK- TRIAC ORNL- HRIBF INFN- LNL CERN- ISOLDE GANIL-SPIRAL 2 SPES project INFN- LNS ENSARSPIRAL2pp ORSAY-ALTO INFN- Pavia INFN- Milano INFN- Bologna INFN- Padova UNI_PV UNI_PD UNI_TN UNI_PA UNI_VI Active Collaborations DIN Future Collaborations DIM DSC DIM DSC DEI DMT SAFETY CONTROLS HANDLING DESIGN MATERIALS

  14. SPES Schedule

  15. Call for Letters of Intent Researchers interested in proposing experiments with the SPES facility at LNL are invited to submit Letters of Intent to the Scientific Committee of SPES. Information on the SPES: http://spes.lnl.infn.it/ deadline for submission is October 1st 2010 The documents can be submitted via email tothe Chair of the Scientific Committee AldoCovello covello@na.infn.it The submitted LoI will be presented and discussed in the forthcoming SPES2010 Workshop (LNL- November 15th-17th, 2010) The goal is to build scientific collaborations around the SPES facility, defining priorities in the development of exotic beams and instrumentation. .

  16. CONCLUSIONS • The SPES project was approved by INFN • The ISOL Target and Ion Source was developed and are under test • The Safety report for cyclotron operation is completed • The bid for the cyclotron proton driver will be concluded in June • The bid for final building design is assigned • Expected ground breaking in 2011

  17. Thank you for the attention

More Related