CR RESR NESR  Light-ion scattering Elastic (p,p), ( ,  ) … Inelastic (p,p’), ( ,  ’)... Charge exchange (p,n), ( 3 He,t), (d, 2 He) … Quasi-free (p,pn), (p,2p), (p,p  ) … Transfer (p,t), (p, 3 He), (p,d), (d,p) …  Light-ion scattering Elastic (p,p), ( ,  ) … Inelastic (p,p’), ( ,  ’)... Charge exchange (p,n), ( 3 He,t), (d, 2 He) … Quasi-free (p,pn), (p,2p), (p,p  ) … Transfer (p,t), (p, 3 He), (p,d), (d,p) … ~ 10 … ~ 740 MeV/nucleon  Key physics issues Matter distributions (halo, skin…) Single-particle structure evolution (magic numbers, shell gaps, spectroscopic factors) NN correlations, clusters New collective modes (different deformations for p and n, giant resonances strengths) Astrophysical r and rp processes (GT, capture…) In-medium interactions in asymmetric and low-density matter  Key physics issues Matter distributions (halo, skin…) Single-particle structure evolution (magic numbers, shell gaps, spectroscopic factors) NN correlations, clusters New collective modes (different deformations for p and n, giant resonances strengths) Astrophysical r and rp processes (GT, capture…) In-medium interactions in asymmetric and low-density matter EXotic nuclei studied in Light-ion induced reactions at the NESR storage ring

RIB (740 MeV/nucleon) RESR Deceleration (1T/s) to MeV/nucleon Collector Ring Bunch rotation Fast stochastic cooling NESR Electron cooling Experiments Later stage of FAIR

EXL Set-up – Concept and Design Goals Internal gas-jet target (>10 14 cm -2 ) Detection systems for: Target recoils (p, ,n,  …  Forward ejectiles (p,n,  ) Heavy fragments Design goals Universality: applicable to a wide class of reactions High energy and angular resolution Fully exclusive kinematical measurements High luminosity (> cm -2 s -1 ) Large solid angle acceptance UHV compatibility (in part) Big R&D effort needed!

Challenging requirements: High efficiency and universality High angular and energy resolutions Low threshold Large dynamic range High granularity Vacuum compatibility … EXL Recoil & Gamma Array EXL Gamma & Particle Array EXL Silicon Particle Array Phase I Phase II

 Si DSSD 300  m thick, spatial resolution better than 500  m in x and y,  E 30 keV (FWHM).  Thin Si DSSD <100  m thick, spatial resolution better than 100  m in x and y,  E 30 keV (FWHM).  Si(Li) 9 mm thick, large area 100x100 mm 2,  E 50 keV (FWHM).  CsI crystals High efficiency, high resolution, 20 cm thick.  Design study Thin DSSD PSD with DSSD Integrated devices  E-E monolitic MAPS Si(Li) CsI and other crystals Vacuum chamber Choice of detector types for the baseline scenario of the EXL Recoil & Gamma Array Synergy with R 3 B & NUSTAR. Mass identification Mass & charge identification Lower thresholds Energy – Position – Identification

Characteristics of EGPA (EXL Particle and Gamma Array) Detect both  s and charged particles Gamma sum energy,  and individual energies 95% 4  coverage,  =80% for E  = 2-4 MeV Stopping 300 MeV protons  E = 2-3% for  s and 1% for fast protons Bins in polar angle of 1 o -4 o for Doppler Correction Total of about 1500 crystals of 20 cm in length 2 Phases : M€ if CsI

The MUST2 Array Compact and efficient: bound and unbound states  -particle coincidences Examples : ( , 6 Be) with cryogenic target 2-nucleon transfer for pairing studies 2-proton decay measurements IPNO-GANIL-SACLAY collaboration

MATE for Si, Si(Li) & CsI  16 ch Amp Slow Amp Fast TAC Multiplex MULTIPLEXERMULTIPLEXER PULSER Disc LE HT Stop Track Hold PA wide band +/-ve MUFEE MATE 6 mm Slow Control Gain, Disc..

MATE - Performance MATE - Performance 16 Channels (Fast & Slow) –Bipolar (slow & fast) –Slow Control –Energy (Track & Hold) 1µs/3µs RC-CR /250MeV (1:800) 25/90 KeV –Time Disc Leading Edge TAC (300nsec) 240 psec jitter Chip 36mm² –BCMOS 0.8 µ –16000 transistors –35 mWatt/channel Serial output 2 MHz 6 mm What is New ? - In Nuc. Phys. Env. new - Dynamic Range 1:800 new - Time & Energy new And it’s functioning !

R&D Detection Group Gaseous Detectors Wire Chambers, MPGD CERN GSI Scintillators Photomultipliers G0 & Jefferson Lab P.AUGER Observatory Head : Joel Pouthas 5 Engineers 3 Technicians (Mechanics) 2 Technicians (Electronics) 4 Technicians (Assembling Detectors) 1 Secretary (part time) 3 Clean Rooms 3D measuring Machine

Jefferson Newport News DVCS / CLAS 424 crystals, 160 mm long, APD readout 2002 R&D 2003 Construction of a prototype 2004 (Jan) Prototype test on beam 2004 Final design and construction 2005 (Mar) Experiment PROTOTYPE 100 Crystals Inner calorimeter (PbWO 4 ) (PbWO 4 ) Mechanics

Jefferson Newport News DVCS / CLAS 2 GeV electron Electromagnetic Shower Simulation Geant 4 simulation

Jefferson Newport News DVCS / CLAS

Darmsdat PANDA / EM Calorimeter Beginning of studies September 2004 StudiesMechanicsThermalIntegrationSimulations Geant 4 R&D Prototypes

Darmsdat PANDA / EM Calorimeter Carbon Cells

Darmsdat EXL

A Few Questions to Address Do we need 2 calorimeters for EXL and R3B? Why does the EXL calorimeter have 1500 modules and the R3B 10000? Do we need sum energy for EXL applications? (i.e how important is 4  coverage?) Is CsI the best material? (see Jürgen Gerl’s talk). Do we need cooling? Will APDs give sufficient dynamic range, or do we need PMTs? Does EGPA need vacuum? ….

How can we (IPNO) help answer Produce a first complete realistic mechanical design. Engineering time will be available starting october. Do detailed Géant 4 simulations of some specific experimental situations (A post doc, Flore Skaza, has been hired for one year and will start in sept.) Do studies on materials? We are willing to contribute to both EXL and R3B. We need to co-ordinate with other groups and labs.