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LEA-COLLIGA LNS (Catania) October 13 - 15 2008 Gianfranco Prete The SPES LNL Selective Production of Exotic Species.

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Presentation on theme: "LEA-COLLIGA LNS (Catania) October 13 - 15 2008 Gianfranco Prete The SPES LNL Selective Production of Exotic Species."— Presentation transcript:

1 LEA-COLLIGA LNS (Catania) October Gianfranco Prete The SPES LNL Selective Production of Exotic Species

2 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES project SPES is part of the INFN Road Map for the Nuclear Physics. Main goal: ISOL facility to perform nuclear physics research with neutron-rich re-accelerated beams. Host laboratory: Laboratori Nazionali di Legnaro

3 LEA-COLLIGA LNS (Catania) October Gianfranco Prete The INFN Legnaro Laboratory The INFN Legnaro Laboratory (brief introduction) Elettrostatic Accelerators - Tandem XTU (16 MV) - Van der Graff (7 MV) - An 2000 (2 MV) SC Linac - Alpi (Veq=40MeV) SC RFQ injector - Piave RIB Facility planned - SPES (ISOL) SPES re-accelerator

4 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Main SPES project parts 2 RIB production stations by ISOL UCx direct target Proton driver: cyclotron with 2 exit ports RIB handling with 1/20000 HRMS RIB re-acceleration by PIAVE-ALPI supercondictive RFQ-LINAC Neutron facility by high current Proton RFQ (TRASCO): LENOS and BNCT applications

5 LEA-COLLIGA LNS (Catania) October Gianfranco Prete The SPES LNL Applied Physics with proton beam Multi user project

6 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES scheme : RIB ISOL facility SPES scheme : RIB ISOL facility Similar to HRIBF-EXCYT scheme proton driver:Cyclotron UCx ISOL target 30gr 8kW f/s HV platform (Pre-accleration) Isobar separator Charge Breeder PIAVE-ALPI (re-accelerator) 1+ n+

7 LEA-COLLIGA LNS (Catania) October Gianfranco Prete The SPES components and project status

8 LEA-COLLIGA LNS (Catania) October Gianfranco Prete UCx discs Graphite container Tantalum Heather - MULTIPLE UC X SLICES : increase the surface radiation area (P= ε·σ·S· T 4 Stefan-Boltzmann law ) - GRAPHITE DUMP : send the proton with low fission rate & high stopping power value Basic ideas: Fission efficiency 100p per 1.5 Fission Fragments Power density in UCx = 70W/gr Proton Beam 200 A 40 MeV 8kW Exotic beam: fissions/sec Dump: graphite Target: UCx (30gr) Operating temperature: 2000 o C SPES project 2007: Direct Target

9 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES Target developments Material Development - Carbide productions - Carbide characterizations - New porous material - New characterization methods Mechanical Development - Thermo-Mechanical Calculation - Target Handling radiation hard system - - CAD mechanical drawings - Development of target prototypes - Front- end & new devices

10 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Alberto Andrighetto 2008 UO 2 +6C UC 2 +2C+2CO U 3 O 8 +20C 3UC 2 +6C+8CO UO 3 +7C UC 2 +2C+3CO Constraint: U/C ratio = 1/4 Effect of Uranium Oxide precursor on UC x bulk Density and Porosity Effect on grain size and shape Cold pressing conditions: P= 750 Mpa, 1h Final Bulk Density P=375 Mpa, 1h UC x from UO 2 UC x from U 3 O 8 UC x from UO 3 5 m

11 LEA-COLLIGA LNS (Catania) October Gianfranco Prete High Temperature Test Bench SPES target prototype with 7 SiC Ф=40 mm. discs Emissivity

12 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Next actions for target On line test of target material ORNL-HRIBF ISOLDE Install Test bench at LNS TASK3_Direct Target

13 LEA-COLLIGA LNS (Catania) October Gianfranco Prete (Distances in cm) OnLine Test Bench at LNS Spes front-end Tape transport system CS proton beam 100nA 30-70MeV

14 LEA-COLLIGA LNS (Catania) October Gianfranco Prete The SPES Ion Sources The SPES Ion Sources Ionization schema with a Surface ionizer coupled to a Laser beam Hot surface Atom Ion Surface ionization Ionization energy < 5-6 eV Ground state continuum Conductive band Fermi energy Hot surface Work function Ion Laser ionization Atom laser Ionization energy < eV Ground state continuum Excited states Laser beam

15 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Pavia Laser lab (Piero Benetti INFN Pavia)

16 LEA-COLLIGA LNS (Catania) October Gianfranco Prete The PIAVE Superconductive RFQ The PIAVE Superconductive RFQ ECRIS LEBT 3H-B SRFQs QWRs B to ALPI booster TDB Transmission % % % The PIAVE The PIAVE Superconductive RFQ From October 2006: Regular Operation β=0.047 β= ALPI injector

17 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Superconductive linac based on QW resonators. 2003: Up graded to Veq ~ 40 MV Nb/ Cu spattered cavities or bulk Nb cavities The ALPI post accelerator The ALPI post accelerator

18 LEA-COLLIGA LNS (Catania) October Gianfranco Prete High not installed The ALPI post accelerator The ALPI post accelerator

19 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Y Sn Br Ca Ne RIBs from spallation and fission Spallation and fission. p GeV - 2 A Spallation. p 450 MeV 70 A Fission. p 40 MeV 10 A

20 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Accelerated RIBs from U fission Proton driver: MeV, 10 A upgrade to 20 A Direct target: UCx Fission rate: 4x10 11 f/s SPES expected beam intensities : at least 20 times HRIBF

21 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Some expected Beams at SPES ionization efficiencies: (1+) 30% and (n+) 4% (1+) 90% and (n+) 12% for Kr and Xe, Transport efficiency 50%

22 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Neutron rich beams expected at SPES facility ElementMassMost Intense isotope (1/s) Ionization Eff (%) TargetSource Surface Ionization Laser Ionization R&D (difficulty) Ni UCxLIS** Cu UCxLIS** Zn UCxLIS** Ga UCxLIS** Ge UCxLIS*** Rb UCxSIS* Sr UCxSIS+LIS*** Y UCxLIS**** Pd UCxLIS**** Ag UCxLIS** Cd UCxLIS** In UCxSIS+LIS** Sn UCxLIS** Sb UCxLIS*** Te UCxLIS**** Cs UCxSIS* Ba UCxSIS+LIS*** La UCxSIS+LIS***

23 LEA-COLLIGA LNS (Catania) October Gianfranco Prete The driver cyclotron (Commercial solution chosen) IBA C70 characteristics: (possible candidate) Diameter < 4m Weight > 120t Magnetic Gap: 30mm Magnetic field: 1.55T Extraction Radius: 1.2m 2 exit ports SPES design Particles: H - / D - / He 2+ / HH + Variable Energy : 15 MeV 70 MeV extraction Systems: Stripper H - / D - Deflector He 2+ / HH + Performances: 750µA H - 70MeV IBA C70 cyclotron: 35µA He 2+ 70MeV

24 LEA-COLLIGA LNS (Catania) October Gianfranco Prete RIB transport lines 20 m HRMS CBMS Charge Breeder (HVplatform 250kV) TIS – RF Cooler - WienFilter (60kV extraction + 250kV platform) 8 m 15 m cryopanel 1/ / m

25 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Second stage of the EXCYT isobaric mass separator Comparison of the main parameters of the EXCYT and the SPES mass spectrometer. Project nameEXCYTSPES Number of dipoles22 Bending Angle90°110° Bending radius2.6 m Entrance/exit angle12.8°32° Magnetic field range kGauss kGauss beam size at analysis slits0.4 mm Teta acceptance40 mrad (x,x) emittance 4 mm.mrad Y beam size2 mm Phi acceptance 10 mrad (y,y) emittance 4 mm.mrad5 mm.mrad Resolving power>15.000> Dispersion16 m28 m High Resolution Mass Separator

26 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Which Charge Breeder? REXEBIS+REXTRAP Pulsed mode PHOENIX booster CW mode Efficiency15 4%10 2% broader charge state distribution Breeding timeFrom 13 to 500ms depending on A100 ms to 300ms A/q2 – 4.54 – 8 ANo real limitationInjection difficult A<40 ModePulsedContinuous or pulsed Imaxfew nA1 μA Beam emittance mm·mrad (95% geometrical) for 20·q keV – measured 10 mm·mrad at 19.5*q keV (90%) BackgroundBeside residual gas peaks <0.1pAUsually >2nA ReliabilityCathode is fragile (could be solved with different gun design) and overall system complex Robust and simple Eurisol_DS Task9 preliminary report 2008 EBIS or ECR ?? Follow and partecipate to the development progress. (CW operation) Operation mode fits to ALPI requests. Appeling reliability and simplicity

27 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES Neutron facility Measurement of Maxwellian Averaged Cross Section (MACS): the quantity needed for the calculation of the stellar reaction rate. Irradiation facility: production of nuclear data (neutron capture cross section) for nuclear energy, new technologies, international agencies (NEA,IAEA) for nuclear energy, new technologies, international agencies (NEA,IAEA) Radiation hardness studies on electronics and detectors for High Energy Physics, Space and Avionic applications Radiobiology application: cell irradiation facility complementary to actual radiobiology facility at ALPI and CN Nuclear medicine research: Boron Neutron Capture Therapy.

28 LEA-COLLIGA LNS (Catania) October Gianfranco Prete 6/6 modules machined RFQ1 and RFQ2 brazed and accepted RFQ3 first brazing performed All modules brazed within 2008 RFQ construction: status 5MeV 30-50mA TRASCO HIGH CURRENT proton linac TRIPS Ion Source (developed by LNS and operated at LNL) Brazing process performed at CERN

29 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Neutron Beam Neutron Flux = n cm 2 s -1 Lithium target Berillium target Thermal neutron beam at exit port of moderator: 10 9 n cm -2 s -1 Irradiation facility: 2 experimental halls BNCT Astrophysics and irradiation

30 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Radiation safety issues

31 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Target radioactivity Radius of the sphere (cm) Average neutron flux (cm -2 s -1 ) Average neutron ambient dose equivalent H*(10) (Sv/h) Target inventory evaluated by ENEA Irradiation = 30 days Produced actinides: U236 (0.34 mg), Np 237 (0.52 mg), Pu236 (0.10 mg), Pu239 (5 mg) Neutron doses. cooling days source s -1 Max dose on the anticorodal sphere surface 31.6· Sv/h · mSv/h Calculated dose. The radius of the anticorodal sphere is r=15.5cm.

32 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Radioprotection Limits Type of area Effective Dose (mSv/y) Project guidelines (mSv/y) Max. H*(10) rate ( Sv/h ) Not classified Supervised631.5 Controlled20105 Reference numbers Radioactivity at different stage of the facility Activity (Bq) Saturated after 1 y Gamma dose Sv/h Saturated after 1 y target2 E131 E E-3Surface of Target container Mass Separator 1 E135 E911.6 E-41m no shielding Isotope Separator 1 E115 E71m no shielding Before ChargeBreeder 1 E105 E61 E-22 E-61m no shielding After ChargeBreeder 2 E95 E51 E-72 E-111m no shielding Target radioactivity Activity (Bq) Total Dose (Sv/h) at 1 m Total Dose (Sv/h) at 2 m Total Dose (Sv/h) at 2 m with 2cm of lead IRRADIATION 14 Days2E+132.1E+005.2E-01 COOLING 14 Days7E E-021.0E-021 E-03 personaleMax Dose per year General Pubblic 10 S/y Not classified personnel 1 mS/y classified personnel1-6 mS/y 5min manual operation: <100 S

33 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES TARGET GROUP At ISOLDE.. monitor BLM at 2.3 m from target indicates 12 Gy/h for U-runs.. From RADIATION PROTECTION ISSUES WITH ACTINIDE TARGETS AT ISOLDE Talk: A. DORSIVAL, CERN-SC-RP First Workshop on Actinide Target Development April 27-29, 2006 At SPES : Total Dose at 2.3 m from the target forseen 100 Sv/h for UCx -> ~ 10 Gy/h -> Same dose as ISOLDE From The SPES target – Power deposition and preliminary radiation protections analyses C. Petrovich ENEA Report FPN- P Target Activation

34 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Preliminary project of safety systems Detailed Shielding analisys Vacuum pumps Exaust System Nuclear Ventilation System Cooling and Drainage of controlled area Radiation and access Control Systems RISK EVALUATION SAFETY REPORT Expertise and People D.Zafiropoulos (Qualified Expert) L.Sarchiapone (FLUKA) G.Bassato (ControlSystemDesign) S.Canella (ControlSystemDesign) M.Giacchini (EPICS) Palermo University (Nuclear Ingeneering) Padova Univ. (Nuclear WasteBuilding)

35 LEA-COLLIGA LNS (Catania) October Gianfranco Prete LNL Director: G.Puglierin LNS Director: M.Lattuada Advisory Committee SPES Working Group Steering Committee Project Leader: G.Prete Technical Coordinator: A.Pisent Scientific Coordinator: A.Covello Qualified Espert: D.Zafiropoulos Task Leaders Project manager Management board SPES project organization La Rana, Pirrone, Colonna, Million, Bruno, Lunardi, Corradi, Casini, Cuttone, Alba

36 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES Working Group task responsible 1 Safety, Radiation protection Control system F.Gramegna 2 InfrastructureP.Favaron 3 Direct Target RIB Sources, Beam Test A. Andrighetto 4 RIB manipulation Charge Breeder, Spectrometer L.Calabretta (interim) 5 High Intensity Proton Driver Neutron Facility and BNCT A.Pisent 6 Re-acceleratorG.Bisoffi 7 High Energy Proton DriverA. Lombardi 8 Scientific supportA. Covello 0 Project Management Project Leader: G.Prete Technical Coordinator A.Pisent Scientific Coordinator A.Covello Radiation protection Procedures D.Zafiropoulos

37 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Ingegneria Meccanica (Sezione Materiali) – Univ. di Padova Dipartimento Scienze Chimiche – Univ. di Padova Ingegneria Meccanica (Sezione Progettazione) – Univ. di Padova Ingegneria Meccanica (Sezione Meccatronica) – Univ. di Trento Ingegneria Informatica – Univ. di Padova ENEA Bologna ENEA Faenza Ingegneria Nucleare-Univ. di Palermo (Ing. Energetica Politecnico di Torino) SPES Collaborations International collaborations: ISOLDE-CERN, HRIBF-ORNL SPIRAL2- Ganil (LEA), ISAC-TRIUMF Laboratori Nazionali di Legnaro – Laboratori Nazionali del Sud Sez INFN: Padova, Milano, Bologna, Catania, Firenze, Napoli, Bari Target development Nuclear safety and radioprotection

38 LEA-COLLIGA LNS (Catania) October Gianfranco Prete RIB production targets - R&D program on Uranium Carbide targets; - design of the target/ion source systems; - targets test experiments and analysis of results with the objectives to quantify the target efficiency in its final geometry. - definition of the industrial fabrication method of the SPIRAL2 high density target. Neutron converter - design, construction and tests of neutron converter for SPIRAL2; - definition of the nuclear constraints for the converter of SPIRAL2; - design of the remote handling system for SPIRAL2. Safety and radioprotection -evaluation of the risks due to the operation of the ISOL facilities SPIRAL2 and SPES based on UCx targets; -study and design of the safety and radioprotection system according to national laws; exchange of qualified personnel competence, access to documentation, technical drawings and codes for safety and radioprotection; -design and construction of the cryogenic radioactive gas trapping system for SPES and SPIRAL2; Accelerator technology -Beam control system -high intensity beam diagnostic -low intensity RIB diagnostic systems High resolution Mass Separator -Beam optics study for isotope selection -Design study for 1/20000 mass spectrometer Charge Breeder (CB) -collaboration on the development and construction of CB systems -project of SPES CB on the basis of the developed SPIRAL2 ECR CB Memorandum of Understanding INFN – Ganil on common technical developments of ISOL facilities

39 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES – ISOLDE MoU Target development: material study characterization test Laser source for RIB: participation to RILIS development Radiation safety: safety report special services for RIB risk evaluation Charge Breeder and Beam Transport: technical discussions system design definition Superconductive Linac cavity development: Sputtering of Quarter Wave cavities

40 LEA-COLLIGA LNS (Catania) October Gianfranco Prete Planning Planning : - Prototype study of the Target - Facility design 2009: - Authorization requests: safety and radioprotection : - Facility construction SPES Project at LNL:

41 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES SCHEDULE Facility design Target and source prototypes Authorization to operate Building construction Target installation and commissioning Completion of RFQ for Neutron Facility Installation and commissioning Neutron Facility Cyclotron construction Cyclotron Installation and commissioning Alpi preparation for post acceleration Installation of RIBs transfer lines and spectrometer Complete commissioning

42 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES Economic plan kEuro infrastructures14840 Target (2 stations)5900 Beam Transfer7650 safetyRadioprotection6000 Cyclotron8400 Re-accelerator7000 High Intensity Linac3600 Neutron Facility BNCT - LENOS MINIMUM for RIB production only (1 target): 41 Meuro

43 LEA-COLLIGA LNS (Catania) October Gianfranco Prete SPES project status Waiting for final SPES approval by INFN (November 2008)Waiting for final SPES approval by INFN (November 2008) Preliminary Project in progress (infrastructure and buildings)Preliminary Project in progress (infrastructure and buildings) Project ready for construction phaseProject ready for construction phase

44 LEA-COLLIGA LNS (Catania) October Gianfranco Prete End presentation


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