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Progress at other U.S. RNB facilities

Progress at other U.S. RNB facilities (Joint RIBF/FRIB Users Meeting, APS/JPS Meeting, Hawaii 2009) W. Nazarewicz. HRIBF CARIBU at ATLAS Cyclotron Facility at TAMU RESOLUT at FSU TWINSOL at Notre Dame. Injector for Stable Ion Species (ISIS). 25 MV Tandem Electrostatic Accelerator.

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Progress at other U.S. RNB facilities

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  1. Progress at other U.S. RNB facilities (Joint RIBF/FRIB Users Meeting, APS/JPS Meeting, Hawaii 2009) W. Nazarewicz • HRIBF • CARIBU at ATLAS • Cyclotron Facility at TAMU • RESOLUT at FSU • TWINSOL at Notre Dame

  2. Injector for Stable Ion Species (ISIS) 25 MV Tandem Electrostatic Accelerator Low-energy Radioactive Ion Beam Spectroscopy Station (LeRIBSS) Scattering chamber Injector for Radioactive Ion Species 1 (IRIS1) Oak Ridge Isochronous Cyclotron (ORIC) Time-of-Flight Spectrometer On-Line Test Facility (OLTF) Daresbury Recoil Separator (DRS) Second-stage Isobar Separator Recoil Mass Spectrometer (RMS) Enge Magnetic Spectrograph Holifield Radioactive Ion Beam Facility - Floor plan Example cyclotron at ARRONAX Facility, Nantes, France Proposed cyclotron room Ti:Sapphire lasers at HRIBF High Power Target Lab (HPTL) & Injector for Radioactive Ion Species 2 (IRIS2) • IRIS2 undergoing commissioning now; HPTL operational since 2006 • Enables use of laser photodetachment for beam purification. Suppress contamination by 99.9% with minimal loss of desired isotope [e.g. F(O),Cl(S),Ni(Co)] • Enables use of resonance laser ion sources [Al,Mn,Fe,Co,Ni,Cu,Ga,Ge,Sn,Tb,Dy,Ho …] • Rasterization of ORIC beam over up to 5cm diameter targets allows higher beam current • ORIC beam at oblique incidence allows liquid and foil targets at higher beam current • Second RIB production platform provides redundancy

  3. HRIBF – recent science highlights Studied mirror levels with 26Al(d,p)27Al First measurement of the 26Al(p,p)26Al excitation function Proton spectrum: 185 ug/cm2 Target, 107 MeV 10Be beam LeRIBBS: The section of beta-gated gamma spectrum measured for 81Zn decay 10Be(d,p)11Be

  4. Beams and science with the cyclotron replacement Evolution of structure: Coulex, moment measurements, transfer at 132Sn & beyond Collective properties in extended neutron radii: Coulomb excitation near 96Kr Evolution of structure near 78Ni: Transfer reactions, Coulex, moment measurements Reaction mechanisms for the formation of superheavy nuclei Decay properties of nuclei at the limits: Crucial for understanding the formation of elements from iron to uranium Baseline Yields for a C70-based HRIBF Sn Ge beam current 185 μA beam current 185 μA

  5. HRIBF, Upgrade for the FRIB Era
An HRIBF Users Meeting
November 13-14, 2009 http://www.phy.ornl.gov/workshops/users09/ The HRIBF users group is proud to organize a workshop on the proposed high-current cyclotron upgrade to the HRIBF. The purpose of the workshop is to build the science case for the proposed new production driver based on a 70-MeV fixed-energy light-ion cyclotron. In addition, the HRIBF strategic plan will be updated based our discussions at the workshop. The workshop will begin at 8:30 am on Friday morning and continue through to approximately 9:30 pm. We will reconvene on Saturday at 9:00 am and expect the meeting to conclude around 1 pm.

  6. CARIBU upgrade CARIBU: Californium Rare Isotope Breeder Upgrade @ ATLAS Fall 2009: 2 mCi source  tests & yields studies Winter 2009 – Spring 2010: 80 mCi source  1st expts. Summer 2010: 1 Ci source  Full research program

  7. Proposed ATLAS efficiency and intensity upgrade • Increase intensity of stable beams from ATLAS by factor >10 • Increase intensity of CARIBU reaccelerated beams by > 5-10 • Increase intensity of in-flight radioactive beams by >100 2 Booster + 2 ATLAS cryomodules Ion trap experiments 2 new bG=0.062 cryomodules, 12 cavities EBIS CARIBU Recoil separator Energy Upgrade Cryomodule MHB RFQ MEBT (Chopper and Buncher) 2 PII cryomodules

  8. qCM=6o-29o z qCM=16o-29o U. Western Michigan, Manchester, ANL collaboration First results from HELIOS Improved resolution for 11,12B(d,p)12,13B “Conventional” HELIOS Preliminary HELIOS Preliminary ~100 keV ~300 keV 11B(d,p)12B 12B(d,p)13B 3.68 MeV 3.48 MeV

  9. Examples of reaccelerated beams produced in DIC: Projected Beam Intensities from LIG after K500 t1/2>100ms Assuming 14 mA beam, realistic LIG, CBECR, transport and K500 extraction efficiencies

  10. RESOLUT: a newradioactive beam facility at FSU Solenoid 1 Magnetic Spectrograph Target Position Solenoid 2 RF-Resonator RF-Resonator Magnetic Spectrograph Mass selectionslits Production target Experiment Counts/50 keV • In-flight production, separation of radioactive beams • Superconducting RF-beam cooling • Driver accelerator: Tandem + SC Linac • Primary beams: Mass 6-40 10-3 MeV/u • RIB produced: 6He, 7Be, 17N, 18Ne, 25Al, 30P , 104-105 pps • RIB possible: Almost all T=1/2, T=1 with 6<=A<=30 Proton-decay Q-value spectrum 25Al - 24Mg (tof) P.N. Peplowski et al.: PRC 79, 032801R (2009):The lowest (l=0) 26Si -Resonance

  11. TWINSOL – Notre Dame RNB Facility

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