AGATA. CSTS SPhN Feb. 2nd AGATA in brief LNL & GSI Campaigns Physics with GANIL IRFU Technical contributions Resources

Transcription

1 AGATA CSTS SPhN Feb. 2nd 2015 AGATA in brief LNL & GSI Campaigns Physics with GANIL IRFU Technical contributions Resources 1

2 AGATA in brief AGATA /GRETA 2

3 Specificities of the project A large collaboration 12 countries, 42 laboratories, ~ 300 physicists A nomad array unique in Europe Legnaro, GSI, GANIL,. SPES, ISOLDE, other? Only one competitor = GRETINA/GRETA, USA A project in phases First phase = demonstrator 5 3 crystals, Legnaro Current phase = 1 third 4 = 20 3 crystals 4 phase = 180 crystals 3

4 First implementation at Legnaro : AGATA 5x3 Crystals 4

5 Legnaro : 20 experiments, 148 days, 3500 hours PRISMA 5

6 Phase GSI AGATA 3x2+6x3 crystals 6

7

8 Commissioning with VAMOS Dec Fusion fission 238 U+ 9 Be, fission fragments identified with VAMOS 8

9 1st campaign (2015) Next PAC : April 2015 Pre-PAC AGATA : Feb C. Domingo-Pardo et al ; 4 +, 2 + lifetime in 94 Ru and 96 Pd J. J. Valiente Dobon et al 4 +, 2 + lifetime in 106,108 Sn 100 Sn 132 Sn G. Georgiev et al; 2 + lifetimes and g factor 204,206,208 Hg 208 Pb P. R. John et al ; Shape transition in W isotopes: 190 W and 192 W spectroscopy and fast timing A. Navin et al ; i 13/2 single particle state in 133 Sn and high spin in 108 Zr 68 Ni 78 Ni D. Verney et al; lifetime measurement in 83 Ge G. Duchêne et al; 80 Zn and 82 Ge highest spin structures 48 Ca J. Ljungvall et al ; 2 +, lifetime and g-factor in 62,64,66 Fe A. Lemasson et al : spectroscopy of 39,41,43 S S. Leoni et al ; Lifetime in n-rich C and O isotopes: test of the three body forces 9

10 Our physics objectives with Lifetime measurement in fission fragments (to be submitted next PAC) Coulex SPIRAL1 beams cf Magda Zielinska Heavy and super-heavy elements spectroscopy with VAMOS Gas-Filled Separator ( ) 10

11 Lifetime measurement in fission fragments Continuation of and 2012 EXOGAM experiment (L. Grente PhD) First RDDS measurement with isotopically identified fission fragments Spectroscopy of more than 100 isotopes from Se (Z=34) to Xe (Z=54) and up to 10 neutrons from the line of stability New AGATA experiment will allow to study more neutron-rich nuclei, up to higher spins and in gg coincidences 238 U MeV/u Simulation AGATA RDDS 104 Zr

12 VAMOS - GFS VAMOS Gas-Filled Separator IRFU/GANIL project. Proof of concept Goal :

13 J. Ljungvall VAMOS-GFS :Loi Ca( 208 Pb,2n) MeV J. Piot 208 Pb(50Ti,2n) MeV B. Sulignano 192 Os, 198 Pt( 48 Ca,xn) 236,238 Cm, 244 ~ 200 MeV 198 Pt, 208 Pb( 36 S,xn) 198 Pt( 36 S,xn) 232,230 Pu, 242 ~ 160 MeV Ch. Theisen n-deficient lead region Actinide, transactinide region ~ 208 Pb(~ 48 Ca,xn) 239 Bk MeV Alpha emitters N-E 100 Sn C. Fransen 56 Fe( 124 Xe,4n) 176 Hg T. Bäck 54 Fe( 54 Fe; 2n) MeV 58 Ni( 54 Fe; 2n) MeV E. Clément 58 Ni( 54 Fe,2n) MeV J.J. Valiente 58 Ni( 54 Fe; 2n) MeV 54 Fe( 54 Fe; 2n) MeV + Agata days +Atelier ESNT Saclay (Autumn 2015) M. Bender / E. Clément / Ch. Theisen 13

14 The benefits of VAMOS-GFS Large reaction range from asymmetric (VHE, SHE, Pb regions) to inverse kinematics (lifetime measurements usinq a plunger) via symmetric ( 100 Sn region) Large transmission > 90 % for 48 Ca+ 208 Pb > 60 % for 54 Fe + 58 Ni (with degrader) > 95 % for 208 Pb+ 48 Ca (with degrader) Mg=10 SAGE+RITU AGATA 30+VGF AGATA 45+VGF g- 300 kev ~ 8 % ~ 10 % ~ 15 % State of the art prompt arrays: AGATA, EXOGAM2, PARIS Ng/evt 0,22 0,83 1,28 Ngg/evt 0,08 0,37 0,82 14

15 Heavy nuclei : the dream list (Agata LoIs) Odd (Ch.T et al.) 2qp high-k isomers (B. Sulignano et al.) Super-heavies (J. Piot et al.) No Plunger (J. Ljungvall et al.) Md Lr Fm Es Cf Bk Cm Am Pu Np U

16 After GANIL Requests to the ASC October 2014 : Extension GANIL until 2018 (accepted) HIE-ISOLDE: (after CERN shutdown ) SPES: (after 2018 SPES commissioning) cf Coulex Magda Zielinska RIKEN:

17 Technical contributions: Detectors Customer Acceptance AGATA Detector Lab. Capsules integration (cold electronics, cabling), energy resolution, peak asymmetry, efficiency, cross-talk (digital electronics), 13 capsules tested. C012 at Saclay now. Contribution to the detector triplet assembly and IKP and GANIL SEDI : Marc Karolak, Mariam Kebbiri 17

18 Detector Support System 18

19 Future autofill Present system not scalable Request from collaboration : new DSS system including autofill Foreseen timescale : design 2017, delivery end 2018 DSS team at SIS : Tom Joannem, A. Lotodé, R. Touzery, Christian Walter 19

20 Ressources Investment Saclay contribution to the 1/3 phase MoU : 710 k new capsule Present MoU (1/3) ends Dec. 31th 2015 Need to negotiate an extension Running cost 10 k / year. Includes Det. Lab. Investment and operational cost Travel (technical missions) 15 k / year Manpower Mandatory to maintain the technical contribution level Former IRFU coordinator has left SPhN end of Responsibility now shared between M. Zielinska and Ch. T. 20

21 R&D cold ASICs for Ge (not AGATA but related) Collaboration with «Nordball» detector IRFU Asic Goth-X (IDeF-X V0) 122 kev = 1.42 kev 1332 kev = 2.22 kev Promising results. Next step : test with an nonsegmented capsule 21

22 Summary and conclusions AGATA : the most powerfull high-resolution gamma array High scientific output already from the demonstrator phase Strong physics program with AGATA at GANIL and beyond High level of expertise in the technical divisions Ge Detectors Detector Support System Promissing R&D on cold ASICs 22

23 Issue of four regular stamps in the le Eccellenze del sapere (Outstanding skills and knowledge) series, dedicated to the National Nuclear Physics Laboratories that answer to the National Nuclear Physics Institute: Frascati, Gran Sasso, Legnaro and Laboratori del Sud 23

24 Legnaro GSI GANIL 24