Martin Winkler, DP NUSTAR DIRACsecondary Beams Design Project NUSTAR  Research Field and Production of Exotic Nuclei  The NUSTAR Facility and the Super-FRS  List of Tasks for the DP NUSTAR  Implementation Plan  Summary of Project Resources and Budget Martin Winkler Kick-off meeting EU DS "DIRACsecondary-Beams", April 14-15, 2005, GSI, Darmstadt, Germany NUSTAR := Nuclear Structure, Astrophysics and Reactions

Martin Winkler, DP NUSTAR NUSTAR = Nuclear Structure, Astrophysics and Reactions Key-Results from FRS Experiments New Fission Studies New Mass Measurements 2-p Radioactivity Halo Nuclei Bound-state  - -decay Pionic Atoms New Fission Fragments Shells far off Stability Skin Nuclei 100 Sn 78 Ni 8B8B 11 Li Giant Dipole Resonance NP A665 (2000) 221 NP A667 (2000) 75 EPJ A14 (2002) 279 PRL 86 (2001) 5442 PRL 91 (2003) to be published PL B 444 (1998) 32 PRL 88 (2002) NP A720 (2003) 3 PR C65 (2002)064603

Martin Winkler, DP NUSTAR Production of Exotic Nuclei at Relativistic Energies

Martin Winkler, DP NUSTAR Advantages of Projectile Fragmentation and – Fission at Relativistic Energies ( GeV/u) Chemistry independent separation  Secondary beams of all elements Fast separation and transport to the experimental devices (less than  s)  Providing secondary beams of short-lived isotopes Kinematical focusing  Efficient injection into separators and storage rings Full unambiguous Z-identification due to high velocities Quasi-continuous secondary beams or alternatively short- pulsed beams Option for beam cocktail of isotopes of similar A/Z

Martin Winkler, DP NUSTAR The NUSTAR-Facility at FAIR Phase 1

Martin Winkler, DP NUSTAR Design Parameter of the Super-FRS Emittance  x =  y 40  mm mrad Angle acceptance - Horizontal  x ± 40 mrad - Vertical  y ± 20 mrad Momentum acceptance  p/p ± 2.5% Maximum magnetic rigidity B  max - High-energy branch 20 Tm - Ring branch 13 Tm - Low-energy branch 10 Tm Ion-optical resolving power (1 st order) R ion 1500 Design Parameters:  Goal: Larger Acceptance

Martin Winkler, DP NUSTAR Gain in Rate K.-H. Schmidt

Martin Winkler, DP NUSTAR Design parameters and layout of the Super-FRS Multi-Stage Super Conducting Large-Acceptance Multi-Branch

Martin Winkler, DP NUSTAR Separation performance with two degrader stages 100 Sn produced by fragmentation of 124 Xe at 1000 MeV/u Introduction of another separation cut in the A-Z plane of the separated isotopes Reduction of the contaminants from fragments produced in the first degrader Optimization of the fragment rate on the detectors in the Main-Separator Pre- and Main-Separator can ideally be used for secondary reaction studies if the separation of the Pre-Separator is already sufficient 1 stage separator (FRS) 2 stage separator (Super-FRS)

Martin Winkler, DP NUSTAR List of Tasks: Overview

Martin Winkler, DP NUSTAR NUSTAR1: High-Power Production Targets (Concept for a Rotating Target Wheel) Key parameters: radiation cooled continuous reliable operation (≈ 1 year) safe handling concepts needed (plug system, vertical access) FacilityBeam Total Beam Power P [kW] Graphite Target Thickness [g cm -2 ] Deposited Power ΔP [kW] Specific Power ΔP/M [kW/g] Super-FRSall ions< < 12< 0.15 PSIP RIKEN/BigRIPSall ions< 1001< SPIRAL-IID200~ ~ 0.25 Target E at PSI Milestones: M6-1: Concept for rotating target wheel, 12/2006*

Martin Winkler, DP NUSTAR NUSTAR1: High-Power Production Targets (Feasibility Study and Prototype Construction of a Liquid Metal Jet) Key parameters for fast extracted beams: pulse length 50 ns  beam interaction with nominal target thickness instantaneous power: 12 kJ/50 ns  240 GW small beam spot (x=1mm, y=2mm)  high power density  windowless liquid-metal jet target Critical aspects:  Damage due to shock waves?  Thickness and density homogeneity of the jet, re-formation after rupture  Efficiency of removing induced radioactivity from the jet  Safety of operation Milestones: M6-2: Conceptual Design of liquid-metal jet target, 12/2007* M6-3: Liquid-metal jet target prototype ready, 12/2007*

Martin Winkler, DP NUSTAR NUSTAR2: Radiation-Resistant Large-Aperture Magnet E>/M= 0.46 mJ/g (quench limit: 2-3 mJ/g) Geometry at target area Energy deposition distribution (calculated with PHITS) Milestones: M7-1: Decision on insulating material, 10/2005* M7-2: Delivery of model coil, 9/2006* M7-3: Design and test for Surveying and alignment system ready, 4/2007* M7-4: Prototype Magnet delivered, 12/2007*

Martin Winkler, DP NUSTAR NUSTAR3: Large-area beam tracking detecors for fast extracted beam x, y: position measurements x', y': corresponding angle measurements  E and TOF for particle identification Task: Measure ion trajectories for p to U High intensities  large amount of deposited charge Short beam pulses Proposed Solution: Devoloping of a Beam Chamber Detector - chamber readout consists of integrated delay lines with inputs connected to the cathode wirdes - use of adjustable preamplifiers - work under variable pressure conditions (<1mbar – 1bar) Milestones: M8-1: High-Flux beam chamber prototype delivered, 8/2007*

Martin Winkler, DP NUSTAR NUSTAR4: Ion-Optics & Application NUSTAR5: Superfluid-Helium Stopping Cell Experiments with Low-Energy and Stopped Beams Milestones: M9-1: Beam-distribution prototype delivered to GSI, 8/2007* M10-1: Key parameters of stopping cell defined, 1/2006*

Martin Winkler, DP NUSTAR Superfluid Helium Stopping Cell TASK: Design of a cell, operated with superfluid helium, for stopping of energetic radioactive ion beams. Test and performance study with a prototype using radioactive beams available in Jyväskylä. 1-2 K liquid vapour room T vacuum electrodes Temperature surface penetration snowball mobility snowball formation Stopping of energetic ions; formation of snowballsMoving snowballs to superfluid He surface with electric fields Ions penetrate superfluid He surface; guided in He vapor with electric fields

Martin Winkler, DP NUSTAR Participating institutes in the DP NUSTAR OrganisationTask GSIInvolved in all NUSTAR tasks Forschungszentrum KarlsruheTarget (fast extraction) Philipps Universität MarburgMagnets (super conductor) Technische Universität DresdenMagnets (cryogenics) Fachhochschule MainzMagnets (alignment) Babcock Noell Nuclear (industry)Magnets (coil winding) Comenius University BratislavaBeam tracking detectors for fast extracted beams Justus-Liebig Universität GiessenIon-optics (target focusing, beam- distribution systems) University of SurreyIon-optics (energy-buncher stage) JyväskylaSuperfluid-helium stopping cell

Martin Winkler, DP NUSTAR Participating Laboratories and Institutes in the DP NUSTAR Participant number OrganisationCountryAcronymCoordinator 1 Gesellschaft für Schwerionen- forschung Darmstadt DGSIM. Winkler 7 Justus-Liebig Universität GiessenDGiessenW. Plass 16 Technische Universität DresdenDDresdenH. Quack 19 Forschungszentrum KarlsruheDFZKR. Stieglitz 20 Philipps Universität MarburgDPUMW. Ensinger 21 Fachhochschule MainzDFHMF. Boochs 22 Babcock Noell Nuclear (industry)DBNNM. Gehring 23 Comenius University BratislavaSKCUBB. Sitar 24 University of SurreyGBUOSZs. Podolyak 33 Jyväskyla Yliopisto Fysiikan laitos FINJYUJ. Äystö

Martin Winkler, DP NUSTAR Multi-annual implementation plan of the DP NUSTAR

Martin Winkler, DP NUSTAR Summary of Project Resources and Budget of the DP NUSTAR

Martin Winkler, DP NUSTAR Breakdown of Estimated Costs Requested from the EU for each Participant

Martin Winkler, DP NUSTAR Manpower Contribution of Participants in the DP NUSTAR

Martin Winkler, DP NUSTAR Manpower Request to the EU of Participants in the DP NUSTAR

Martin Winkler, DP NUSTAR Summary table of expected budget and of the requested Community contribution (I)

Martin Winkler, DP NUSTAR Summary Table of expected budget and of the requested Community contribution (II)