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Rare Isotope Science Project (RISP)

Rare Isotope Science Project (RISP). Sun Kee Kim. Science Business Belt. Accelerator complex. Institute for Basic Science. Organization of IBS (Institute for Basic Science). 4. Organizational Structure. Board of Directors. Scientific Advisory Board. Auditor. President. Office of

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Rare Isotope Science Project (RISP)

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  1. Rare Isotope Science Project (RISP) Sun Kee Kim

  2. Science Business Belt Accelerator complex Institute for Basic Science

  3. Organization of IBS (Institute for Basic Science) 4. Organizational Structure Board of Directors Scientific Advisory Board Auditor President • Office of • Policy Planning Accelerator Institute (Affiliated Institution) Secretariats Rare Isotope Science Project Office of Research Services • IBS consists of 50 research centers, supporting organizations, and affiliated research institutes • Each Research Center : ~50 staff, average annual budget ~ 9 M USD • The number of staff: 3,000 (2017, including visiting scientists and students) • Annual Budget: USD 610 million (2017, including operational cost for the Accelerator Institute) • Office of Administrative Services Research Center (Headquarters) Research Center (Campus) Research Center (Extramural) 4

  4. Research Topicswith Rare Isotopes • Nuclear Physics • Exotic nuclei near the neutron drip line • Superheavy Elements (SHE) • Equation-of-state (EoS) of nuclear matter Origin of Elements Stellar Evolution • Nuclear Astrophysics • Origin of nuclei • Paths of nucleosynthesis • Neutron stars and supernovae • Nuclear data with fast neutrons • Basic nuclear reaction data for future nuclear energy • Nuclear waste transmutation • Atomic/Particle physics • Atomic trap • Fundamental symmetries • Material science • Production & Characterization of new materials • -NMR / SR • Medical and Bio sciences • Advanced therapy technology • Mutation of DNA • New isotopes for medical imaging Application of Rare Isotopes

  5. Making Rare Isotope Beam Target spallation, fission by energetic light projectile ISOL(Isotope Separator On-Line) p  thick target (eg. Uranium Carbide) fission fragments  rare isotopes Projectile fragmentation IF(In-Flight Fragmentation) Heavy ion beam  thin target projectile fragmentation  high energy RI beam or  stopping and reacceleration

  6. Rare Isotope Factory 7 • High intensity RI beams by ISOL & IF • 70kWISOL from direct fission of 238U induced by 70MeV, 1mA p • 400kWIFby 200MeV/u, 8pμA 238U • High energy, high intensity & high quality neutron-richRI beams • 132Sn with up to ~250MeV/u, up to 9x108pps • More exotic RI beams by ISOL+IF+ISOL(trap) • Simultaneous operation modes for the maximum use of the facility

  7. Concept of the Accelerator Complex Medical science Material science Driver Linac 200 MeV/u (U), 8 pμA U33+ RFQ SCL Future Extension SCL Stripper 18 MeV/u μSR Spallation, Fission Target 28 GHz SC ECR IS H2+, D+ Material science Medical Research Nuclear Data Fragment Separator ISOL Linac 400 kW Target 70 kW Cyclotron Material Science Beta-NMR RF Cooler Gas Catcher, Gas cell SCL RFQ Mass Separator 18 MeV/u 1~5 MeV/u 0.3 MeV/u 10 keV/u High Energy Experiments Atomic / Nuclear physics Nuclear Physics Nuclear Astrophysics Material science, Bio science Medical science, Nuclear data Atomic Trap Experiments Charge Breeder Low Energy Experiments ECR IS SC Linac 200MeV/u for 238U, 600 MeV for p  IF driver, high power ISOL driver Cyclotron 70 MeV for p  ISOL driver SC Linac ISOL post accelerator 18 MeV/u

  8. LINAC RIfromISOL by Cyclotron Beam line [for acceleration] Beam line [for experiment] Target building IFF LINAC 200 MeV/u (U) • Future extension area Experimental Hall SC ECR IS Future plan SCL SCL RFQ Stripper Cyclotron K~100 μ, Medical research H2+ D+ ISOL LINAC ISOL target In-flight target • Medical science SCL RFQ Charge Breeder Fragment Separator • Nuclear Astrophysics • Material science • Bio science • Nuclear data Low energy experiments Atom trap experiment 1 ISOL with cyclotron driver (70 kW) 3 • Atomic / Nuclear physics High energy experiments 2 1. ISOL  low E RI • Nuclear Physics 2. ISOL  high E RI 3. ISOL  IFF  ISOL (trap)

  9. LINAC RI from IFF by High-Power SC LINACand High-Intensity Stable HI beams Beam line [for acceleration] Beam line [for experiment] Target building IFF LINAC 200 MeV/u (U) • Future extension area Experimental Hall SC ECR IS Future plan SCL SCL RFQ Stripper Cyclotron K~100 μ, Medical research H2+ D+ ISOL target In-flight target ISOL LINAC 17.5 MeV/u (U) > 11 pμA • Medical science SCL RFQ 4 Charge Breeder Fragment Separator • Nuclear Astrophysics • Material science • Bio science • Nuclear data Low energy experiments Atom trap experiment 5 Stable HI beams IFF with stable heavy ions • Atomic / Nuclear physics High energy experiments 6 7 4. Low E stable heavy ions • Nuclear Physics 5. IFF  low E RI or ISOL (trap) 6. IFF  high E RI 7. High E stable heavy ions YITP-KoRIA Workshop

  10. LINAC RIfromISOL by High-Power SC LINAC(Long term future upgrade option) Beam line [for acceleration] Beam line [for experiment] Target building Driver LINAC 600 MeV, 660 mA protons • Future extension area Experimental Hall SC ECR IS Future plan SCL SCL RFQ Stripper Cyclotron K~100 μ, Medical research H2+ D+ ISOL LINAC ISOL target In-flight target • Medical science SCL RFQ Charge Breeder Fragment Separator • ISOL with IFF LINAC • future high-power driver • 400 kW (or ~MW) ISOL upgrade • Nuclear Astrophysics • Material science • Bio science • Nuclear data Low energy experiments Atom trap experiment 8 • Atomic / Nuclear physics High energy experiments 8. High power ISOL • Nuclear Physics YITP-KoRIA Workshop

  11. IF Linac Beam Specification

  12. Estimated RIBs based on ISOL * Calculated by Dr. B. H. Kang (Hanyang Univ.) for proton beams of 70 MeV and 1 mA with 3 cm thickUC2 target of 2.5 g/cm3

  13. Driver SC Linac lattice • Design to accelerate high intensity ion beams • Flexile operation to meet the needs of various user groups SC cavity NC quadrupole Previous Driver SCL with SC solenoids Driver SCL with NC doublets

  14. SC solenoids Poor beam quality a b quite diverse 96.7 m Better beam quality a b more aligned NC quadrupoles Beam envelope is more regular 94.5 m

  15. RMS emittance comparison X emittance Y emittance SC solenoid SC solenoid • Rms emittance is reduced. • Beam parameters of different charge states for SC solenoids are more diverse and can be difficult to control in the stripper section. Quad Doublet Quad Doublet NC doublet lattice seems to control beam quality better than SC solenoids.

  16. Choiceof optimal geometric beta (work in progress) RISP: 0.047(QWR), 0.120(HWR), 0.30(SSR), 0.53(SSR) FRIB: 0.041, 0.085, 0.29, 0.53

  17. Optimization of Cavity Geometry in progress 8 cm 77.8 cm 7.68 cm 2 cm  4 cm 8 cm 6 cm 18 cm 2.89 cm 22 cm 11.56 cm  = 0.047, f = 81.25 MHz

  18. Present Charge Stripping Section – 90° bend Charge selection slit Chicane structure for charge selection (length: ~ 27 m) Charge selection slit Stripping foil Quadrupole triplet Correction Sextupole 45º bending dipole 20º bending dipole Quadrupole doublet Slit 18.5 MeV/u Uions with charge states of 77 - 81 → Magnetic rigidity = 1.88 T·m Stripping foil, Liquid Li, Gas He Stripper Charge Selector

  19. Facilities for the scientific researches 20 - Design of the experimental facilities in conceptual level - User training program with the international collaboration Nuclear Structure Nuclear Matter Nuclear Astrophysics Atomic physics Nuclear data by fast neutrons Material science Medical and Bio sciences Multi-Purpose Spectrometer Large Acceptance Multi-Purpose Spectrometer (LAMPS) KoRIA Recoil Spectrometer (KRS) Atom & Ion Trap System neutron Time-of-Flight (n-ToF) Β-NMR/NQR Elastic Recoil Detection (ERD) Laser Selective Ionizer Heavy Ion Therapy Irradiation Facility

  20. Conceptual Design of LAMPS(high energy) • Dipole acceptance ≥ 50mSr • Dipolelength =1.0 m • TOF length ~8.0 m Science Goal: using isototpes with high N/Z at high energy for Nuclear structure Nuclear EOS Symmetry energy EX: : Nuclear collision of 132Sn of ~250 MeV/u ForB=1.5 T, p/Z ≈ 0.35 GeV/c at 110o Low p/Z High p/Z ForB=1.5 T, p/Z ≈ 1.5 GeV/c at 30o Solenoid magnet Neutron-detector array Dipole magnet: We can also consider the large aperture superconducting dipole magnet (SAMURAI type).

  21. Status and Plan • Conceptual Design report (Mar. 2010 - Feb. 2011) • IAC review (Jul. 2011 – Oct. 2011) • Rare Isotope Science Project started in IBS (Dec. 2011) • RISP Workshop on accelerator systems (May 6 – 9, 2012) • TAC ( May 10, 2012), IAC( June 5, 2012) • Technical Design Report (by Jun. 2013)

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