Status and Perspectives for the NuSTAR

collaboration

Reiner Krücken

Physik Department E12Technische Universität München

Status and Perspectives for the NuSTAR

collaboration

Modularized Start Version of FAIR

NuSTAR science with Modules 0-1-2-3

What is missing?

Conclusions

FAIR Modularized Start Version• Significant cost increases in civil construction and site development

cost ( Germany pays additional 95 M€ for site specific costs)

• Modularized Start Version of FAIR A defined in White Paper Draft– Module 0: Heavy-Ion Synchrotron SIS100– Module 1: Experiment hall at SIS100 for beam diagnostics,

HADES/CBM, APPA, and detector calibration.– Module 2: Super-FRS for NUSTAR including all three branches and the

energy buncher– Module 3: Antiproton facility for PANDA (LINAC; target, CR, HESR) and

CR also for NuSTAR– Module 4: LEB cave, NESR storage ring for NUSTAR und APPA, FLAIR

building, cave for APPA– Module 5: RESR storage ring for a higher beam intensity for PANDA

and parallel operation with NUSTAR

• Cost 0-1-2-3: 1.027 M€ (2005) using updated civil construction cost and cost book values (CB 5.0) for accelerators

• Accepted available funds amount to 1.039 M€ (2005)

– another 62 M€ not firm + 12 M€ from Saudi Arabia (new partner)

• Construction schedule foresees first experiments 2016/17

FAIR Modularized Start Version

Cost: 1027 M€

Available: 1039 M€

104 M€

19 M€

Modules 4 and 5 will be implemented as additional funds become available!

Remember the 84 M€ not accounted for, but more funds certainly needed!

Implementation Scenario for NuSTAR Experiments in Modules 0-3

R3B

DESPECat MF-4 ??

HISPECAt MF-4 or R3B target position??

MATS & LASPECbehind R3B or in LEB tunnel??

ILIMA in CR

YESTERDAY

NuSTAR Experiments Modules 0-3

ILIMA• Isochronous mode • shortest-lived nuclei• limited precision

R3B • full capability

DESPEC• full capability

HISPEC• full capability

MATS & LASPEC• full capability

Delays possible for • EXL in NESR (Module 4)• ILIMA in NESR (Module 4)• ELISe (FAIR B)

(+ building for energy buncher)TODAY

NuSTAR science within Modules 0-1-2-3

R3B:reaction studies at the highest energies in complete

kinematics full R3B programme will be accessible (world-wide unique)–few body correlations at and beyond the drip-lines in break-up reactions (halo nuclei, open quantum systems)

–dipole response below and above the particle threshold using Coulomb excitation and breakup (Pygmy response, neutron skins, neutron matter properties, EOS)

–Evolution of shell structure and single-particle occupancies using knock-out and quasi-free scattering experiments (tensor force, shell quenching)

–Nuclear dynamics in fission and the symmetry energy at supra-saturation density in fragmentation reactions (large scale collective motion EOS)

–Measurement of (gamma,n) reaction rates for r-process nuclei (origin of the heavy element)

NuSTAR science within Modules 0-1-2-3

DESPEC: decay spectroscopy using gamma-ray and neutron spectroscopy

following isomeric or beta-decay of very exotic nuclei

Experiments with production rates between 1000 per second and 1 per hour possible ( farthest reach towards the drip lines)

– Measurement of absolute Gamow Teller strength values

– Investigations of 100Sn and nuclei along/beyond the proton

dripline

– Structure of nuclei in heavy r-process region

– Measurement of g-factors of isomeric states and half lives

of very short isomers

NuSTAR science within Modules 0-1-2-3

HISPEC: • high resolution in-flight gamma-spectroscopy (HISPEC with

AGATA)

– Probing the evolution of nuclear shell structure in very n-rich medium-heavy nuclei using Coulomb-excitation, knock-out, and secondary fragmentation

– Probing the evolution of nuclear collectivity far from stability using Coulomb-excitation, lifetime and g-factor measurements

NuSTAR science within Modules 0-1-2-3

MATS and LASPEC: • precision masses, ground-state moments• short-lived nuclei and refractory elements not available with

ISOL• using ion-traps and laser spectroscopy after gas-stopping cell

NuSTAR science within Modules 0-1-2-3

ILIMA in CR:• direct mass measurements of

nuclei with half-lives in the millisecond region (most exotic, r-process)

• half-life experiments on highly-charged exotic ions

• studies of long-lived isomeric states.

Highlight: Half-lives and masses of r-process nuclei responsible for the A~195 abundance mass peak

What is missing?

NESR

ILIMA:• precise masses and half-lives of many nuclei• unique decay modes

ELISe:Elastic and inelastic electron scattering(charge distributions, giant resonances)

EXL:Elastic scattering and low-q reactions(matter distributions, monople resonances, capture reactions, trnasfer, knock-out)

Experiments with stored electron cooled ion beams• World-wide unique• Conceptionaly new

AIC:Antiproton anihilation on nuclear surface(neutron skin thickness)

Conclusions

• Modules 0-1-2-3 of FAIR will allow for unique, exciting, and world-unique experiments

• Modularized FAIR start version is an essential step towards establishing the FAIR GmbH

• However: NuSTAR experimental programme will bring to fruition only a fraction of its full potential Need for NESR with world-wide unique experimental Need RESR for availability of parallel beams at FAIR Need SIS300 for full multi-user capabilities and maximum

efficiency of FAIR facility We need to continue to work towards the full FAIR

facility!!

Continue to work on TDRs for NuSTAR experiments Continue a vigorous program at GSI FRS and ESR

The way forward

• After founding of FAIR GmbH

– full review of all design details needed to optimize facility layout

– secure more funds !! (74 M€ not firm, new partners?)

– Time line: approx 1.5 years until building construction can start

– SIS18 beams from Super-FRS (before SIS100) seems possible

time for careful planning on how to move forward with

LEB, EXL

• Keep focus on:– realization of the full NuSTAR facility – performing excellent physics at GSI/FRS/ESR and the FAIR start

version

• Need work on NuSTAR MoU and Money Matrices