PowerPoint

The Rare Isotope Science Projecta.k.a. KoRIAIUPAP 2012 (Japan)08. 17. 2012

Dong-O Jeon

The Institute for Basic Science1Brief History of IBSInternational Science Business Belt plan (2009.1) The Institute for Basic Science is the core facility of the ISBB planUnder the IBS, a heavy ion accelerator facility is built The Rare Isotope Science ProjectPreliminary Design Study (2009.3 - 2010.2)Conceptual Design study (2010.3 - 2011.2)International Advisory Committee (2011.7)Institute for Basic Science(IBS) established (2011.11)Rare Isotope Science Project(RISP) launched (2011.12)Technical Advisory Committee (2012.5)Baseline Design Summary (2012.6)International Advisory Committee (2012.7)

Organization of the Institute for Basic Science

AuditorPresidentScientific Advisory BoardSecretariatsOffice of Policy PlanningOffice of Research ServicesOffice of Administrative ServicesResearch Center(Headquarters)Research Center(Extramural)

Accelerator Institute(Affiliated Institution)

Board of Directors

Research Center(Campus)Rare Isotope Science Project4

IBS consists of 50 research centers, supporting organizations, and affiliated research institutesEach Research Center : ~50 staff, average annual budget ~ 9 M USDThe number of staff: 3,000 (2017, including visiting scientists and students) Annual Budget: USD 610 million (2017, including operational cost for the Accelerator Institute)

Location

Daejeon

Bird Eye View of IBS

Birds Eye View of Accelerator Facility

Birds Eye View of Accelerator Facility Making Rare Isotope Beams

IF(In-Flight Fragmentation)Stable Heavy ion beam thin target projectile fragmentation (high energy) ISOL(Isotope Separator On-Line)p thick target (eg. Uranium Carbide) target spallation or fission (low energy)RI IonsReaccelerationRI ion beamStopping

RI Beam

Fast BeamExperiment

Stopped Beam Experiment(Traps)CyclotronProton 70 MeV, 70 kWDriver LINACHeavy ion e.g. U : 200MeV/u, 200 kWAccelerator SystemECR-IS ( 10keV/u, 12 pA)LEBTRFQ (300keV/u, 9.5 pA)MEBTSCL1 (18.5 MeV/u, 9.5 pA) SCL2 (200 MeV/u, 8.3 pA for U+79)(600MeV, 660 A for p) SCL1 (Post Acc.)ECR-ISRFQMEBTCBHRMSRF CoolerISOLTargetCyclotron (p, 70 MeV, 1mA)IF TargetIF SeparatorChg. StripperDriver LinacPost AcceleratorIF systemISOL systemSR, MedicalAtomic TrapGas CatcherMain Driver Superconducting Linac with 400 kW beam powerCyclotron 70 MeV 1 mA p beam as ISOL driverPost Accelerator to accelerate RI beams

Accelerator SystemAcceleratorDriver LinacPost Acc.CyclotronParticleproton U+79RI beamprotonBeam energy600 MeV200 MeV/u18.5 MeV/u70 MeVBeam current660A8.3 pA-1 mAPower on target400 kW400 kW-70 kWBeam Parameters of Accelerator SystemDriver LinacECR-IS ( 10keV/u, 12 pA)LEBTRFQ (300keV/u, 9.5 pA)MEBTSCL1 (18.5 MeV/u, 9.5 pA) SCL2 (200 MeV/u, 8.3 pA for U+79)(600MeV, 660 A for p) SCL1 (Post Acc.)ECR-ISRFQMEBTCBHRMSRF CoolerISOLTargetCyclotron (p, 70 MeV, 1mA)IF TargetIF SeparatorChg. StripperDriver LinacPost AcceleratorIF systemISOL systemSR, MedicalAtomic TrapGas CatcherMain Driver Linac with 400 kW beam powerAccelerates from proton (600 MeV) to uranium (200 MeV/u)Designed for high intensity beamsSend beam to the IF target or ISOL target

InjectorSCL2SCL1ECR Ion Source

Consists of 28 GHz RF system and superconducting magnets for high current ion beam generationX-ray shielding requiredHigh temp oven under designGenerating 12 pmA (U beam)ECR-ISIon BeamProton to Uranium beamExtraction Energy10 keV/uRF power10 kWExtraction Emittance0.1 mm-mradBeam Current12 puA (238U33+, 238U34+)RF Frequence28GHzSuperconducting Magnet RFQRFQ isTo accelerate ion beams from 10 keV/u to 300 keV/u4 m long, 81.25 MHzRFQInput Energy10 keV/uOutput Energy300 keV/uInput Emittance (rms)0.12 mm-rad Frequency81.25 MHzInput charge33, 34 (Uranium-238)Input current12 pAOutput current9.5 pARFQex=0.12 mm-mrad, ey=0.18 mm-mrad, ez=8.2 MeV-deg @ exit of RFQ With LEBT bunchers (TRACK code) Accelerate ion beams 10 keV/u to 300 keV/uAssessing available options.Transmission : 80.5%

Driver SCLSCL is designed To accommodate the needs of various user groupsTo accelerate high intensity beamsNb Cavities operating at 2KFocusing by normal conducting quad doubletsOptimized geometric beta of SC cavities (0.047, 0.12, 0.30, 0.53)Employs larger aperture to reduce beam loss (4cm and 5 cm aperture)Cryogenic load estimated 1.9 kW [Driver Linac 2K] + 0.35 kW [Post Acc]Cavity geometry optimized for Epeak/Eacc , Bpeak/Eacc , R/Q, QRs

Cavity Geometric Beta Optimization16RISP: 0.047, 0.120, 0.30, 0.53

QWRHWRSSR1SSR2For U beamCavity Geometry OptimizedParametersUnitQWRHWRSSR 1SSR 2bg-0.0470.120.300.53Resonant frequencyMHz81.25162.5325325No of cavities-2413888136Aperture diametermm40405050QRsOhm374786108R/QOhm480319242304VaccMV1.021.072.043.53EpeakMV/m30303030BpeakmT48415457Epeak/Eacc5.086.24.064.15Bpeak/Eacc9.168.47.078.6Qcalc/109-3.64.68.110Operating temperatureK2222P0W1.31.54.77.9Pbeam / emA (proton)W85492514402770Pbeam / emA (Uranium)W113134524926Average charge state (U)-33.533.57979SCL Layout18

NC quadrupolePrevious Driver SCL Designwith SC solenoidsDriver SCLwith NC doubletsSC cavityQWR

beam box

HWR Linac base frequency = 81.25 MHz Design to accelerate high intensity ion beams Flexile operation to meet the needs of various user groupsSCL LayoutNC quadrupole lattice option has the following merits: Accurate alignment < 150 mm of NC quadrupoles is straightforward. Beam quality control is straightforward and design is more adequate for high power beam operation. Advantages in beam diagnostics and collimation through beam boxes.

The linac cost seems to be in error range compared with the SC solenoid option. ( removal of costly SC solenoids) Preliminary cryo-load comparison suggests that overall cryo-load difference is small compared with the dynamic load.

SCL LayoutcollimatorquadrupolecryomodulePresent SCL layout provides good beam diagnostics configuration for machine tuning.Necessary beam diagnostics can be installed at beam boxes. Also provides good beam loss collimation configuration, improving beam quality for users, reducing beam loss.Beam lossBeambeam boxSCL Layout

[1 QWR + 1 QD] x 24[3 HWR + 1 QD] x 14[6 HWR + 1 QD] x 16[4 SSR + 1 QD] x 22SCLCavity structureFrequencygNumber of cavitiesOutput energySCL1QWR81.25 MHz0.047242.5 MeV/u (U+33)HWR162.5 MHz0.1213818.6 MeV/u (U+33)SCL2SSR325 MHz0.308871 MeV/u (U+79)SSR325 MHz0.53136200 MeV/u (U+79)[8 SSR + 1 QD] x 17

beam box example (courtesy of SPIRAL2)

SCL1SCL2SCL machine tolerance (Driver SCL, Post SCL) Machine imperfections for actual acceleratorParametersSCRF CavityWarm QuadrupoleSC SolenoidDistributionDisplacement (mm)10.150.5UniformRotation (mrad)-5-UniformPhase (deg)1--3 GaussianAmplitude (%)1--3 GaussianPreliminary study is done.Further studies on machine tolerances will be done.

SCL machine tolerance The shade region represents the bounds of envelope, centroid and emittance due to misalignment and field errors.The aperture of quadrupole and solenoid is 4 cm.

Max. envelopeCentroidEmittancebaselinesolenoid10% increase130% increase76% increase350% increaseCyclotronECR-IS ( 10keV/u, 12 pA)LEBTRFQ (300keV/u, 9.5 pA)MEBTSCL1 (18.5 MeV/u, 9.5 pA) SCL2 (200 MeV/u, 8.3 pA for U+79)(600MeV, 660 A for p) SCL1 (Post Acc.)ECR-ISRFQMEBTCBHRMSRF CoolerISOLTargetCyclotron (p, 70 MeV, 1mA)IF TargetIF SeparatorChg. StripperDriver LinacPost AcceleratorIF systemISOL systemSR, MedicalAtomic TrapGas CatcherCyclotronCyclotron 70 MeV, 1 mA, proton beamSupports CW and pulsed beamPulsed beam by fast chopping systemDriver for the ISOL targetWill be procured through bidding

Post-Accelerator System ECR-IS ( 10keV/u, 12 pA)LEBTRFQ (300keV/u, 9.5 pA)MEBTSCL1 (18.5 MeV/u, 9.5 pA) SCL2 (200 MeV/u, 8.3 pA for U+79)(600MeV, 660 A for p) SCL1 (Post Acc.)ECR-ISRFQMEBTCBHRMSRF CoolerISOLTargetCyclotron (p, 70 MeV, 1mA)IF TargetIF SeparatorCSDriver LinacPost AcceleratorIF systemISOL systemSR, MedicalAtomic TrapGas CatcherAccelerates RI beams from the ISOL system up to 18.5 MeV/u and RI beam can be injected to SCL2 to higher energyConsists of charge breeder, RFQ, MEBT, superconducting linac etc.High beam quality requiredAdopts the same SCL layout

Design of IF Separator

W. Wan, J. Kim, Cyclotron Conf. 2010Pre-separator: S-shapeMain separator: C-shapeMax. magnetic rigidity= 8 TmBeam Optics of Pre-Separator

p/p= 1.5%Aberrations up to 7th orderHorizontalVerticalBeam dumpWedgeShielding

Calculated with TURTLE= 4 mm mradp/p = 5 %Schedule

SAR (Safety Analysis Report) Review is a critical path to accelerator system installation and commissioning.Rather optimistic schedule for SAR Review process is assumed.Accelerator tunnel construction begins Feb/01/2016.Installation of accelerators will begin Jul/01/2016.Schedule

Schedule

Very tight installation and commissioning schedule to meet the 2017 completionOrganization ChartSCL TeamKim, Hyung Jin (leader)Jung, Hoe ChunLee, Jung HanChoi, Chul JinJoo, Jong DaeIF RF TeamKim, Jong Won (leader)Han, Jae EunKim, Mi JungKim, Do GyunKim, Myeong JinSong, Jeong SeogKim, Seong JunInjector Beam Phy TeamHong, In Seok (leader)Kim, Byoung ChulChoi, Bong HyukSeo, Chang SeokKim, Hye JinJang, Si WonHwang, Ji GwangBang, Jung BaeAccelerator Sys. DivisionJeon, Dong-ORare Isotope Science ProjectKim, Sun KeeExperimental Sys. DivisionKim, Yong KyunRecruiting on-goingMan-power Plan20122013201420152016TotalYoung scientists / engineers20201210870Budget (\100M)101065435Recruiting Plan for young scientists and engineersProject-wise Man-power Plan 2011201220132014201520162017Regular (Termed)1(0)33(39)50(50)116(50)130(50)140(50)150(50)SummaryPrevious conceptual design was reviewed / assessed and design changes are made (reflected in Baseline Design Summary).The RISP is phasing into technical design stage.Schedule and Cost are being evaluated.Having developed man-power plan to support the schedule. We are getting ready for the construction of the SRF Test Facility. International Collaboration is an important part for the success of the project.

Thanks for Your Attention!