The AGATA campaign at GANIL. Joint LEA COLLIGA and LEA COPIGAL Workshop January 2014

Transcription

1 The AGATA campaign at GANIL Joint LEA COLLIGA and LEA COPIGAL Workshop January 2014

2 AGATA collaboration From 2008 to 2015, the AGATA collaboration foreseen to construct and exploit a 1p array with 15 fully equipped Triple Cluster 3 facilities LNL/SPES (Legnaro, Italy) with 5 cluster GSI/FAIR (Darmstadt, Germany) cluster GANIL/SPIRAL2 (Caen, France) cluster

3 AGATA 1p at GANIL : Ancillary devices Angles >10 deg for fission & MNT At 0 as separator (vaccum/gas-filled) In G1 coupled to VAMOS (+ EXOGAM2): SIBs, RIBs Charged particle array for transfer reaction MUST2/TIARA : (d,p) etc program with SIB and RIB Charged particle array for prompt tagging : DIAMANT Neutron detector (Nwall) Charged particle array for Recoil Decay Tagging : MUSETT Scintillator : BaF2 array, LaBr3 Future detector : NEDA (n), GASPARD, PARIS (LaBr3)

4 GANIL physics cases Gamma-ray spectroscopy of very neutron-rich nuclei populated in Deep Inelastic collisions or induced fission using VAMOS to identify the reaction products in Q, A and Z. Spectroscopy of heavy elements towards SHE and N=Z nuclei populated by fusion evaporation with VAMOS in gas-filled mode. Spectroscopy of p-rich nuclei at the N=Z line using the N-wall Spectroscopy using existing and new SPIRAL1 beams

5 Beam: MeV/u, (I~ 2pnA) ( 208 Pb, 136 Xe) Target : 9 Be, 12 C, 48 Ca, 70 Zn, 198 Pt (1 mg/cm 2 ) Full identification of the heavy recoil in VAMOS Shell evolution toward 54 Ca (M. Rejmund et al) lifetime measurement with a plunger in n-rich nuclei beyond 68 Ni (J. Ljungvall et al; A. Dijon et al; I. Celikovic et al) Gamma spectroscopy around 68 Ni (A. Dijon et al) FF spectroscopy after transfer induced fission reactions (F. Farget et al; A. Navin et al;. A. Görgen et al.) Spectroscopy of heavy element Os (J. Valient-Dobon et al; Watanabe et al)

6 Improved VAMOS performances: VAMOS++ M. Rejmund al, NIM A 646 (2011) Full reconstruction over the whole acceptance Mass resolution ~ 1/220 Z identification up to Z= 62 Using the high quality heavy beams delivered by GANIL: opportunity for prompt spectroscopy of heavy elements populated in MNT : Ni, Sn, Pb region Zr L. Grente et al. EPJ Web of Conferences 62, (2013) A. Navin et al Phys. Lett. B728, (2014) See previous talk by Navin

7 VAMOS in gas-filled / Vacuum mode Unique opportunity to couple AGATA -1p with a separator in fusion induced reaction. Intense 48,40 Ca, 50 Ti, 36 Ar, 58 Ni, 54 Fe beams Rejection > Measured in the 40 Ca+ 150 Sm reaction Prompt spectrocopy with p,a tagging at the focal plane (MUSETT) C. Schmitt et al NIM A 621 (2010) C. Theisen et al submitted to NIMA

8 MUSETT array Vacuum mode : 22 Ne Au 214 Ac Gas filled mode : 48 Ca+ 198 Pt 244 Cf ; 54 Fe+ 58 Ni 110 Xe +2n (50 nb) 54 Fe+ 54 Fe 106 Te +2n (25 nb) Not yet fully funded and operational French grant Agency for Research 2014 request (CEA/Saclay -GANIL) VAMOS + EXOGAM+MUSETT Vamos at 0 degree used as separator Prompt spectroscopy after Recoil decay tagging (a-decay) in MUSETT Ch. Theisen et al, submitted to NIMA

9 ~40 Neda modules Operational in J=7 92 J=9 46 Pd 46 J=9 J=7 A new Spin-aligned pairing phase in 92 Pd (6 + ) 2536 ( ) 874 (2 + ) Pd, exp. 92 Pd, SM B Cederwall, et al, Nature 469, (2011)

10 The GANIL Campaign ( ) 2014 VAMOS cave toward 1p Campaign spokesperson : S. Lenzi (Univ. Padova) 1 st workshop on the18 th - 20 th of February 2013 organized at GANIL, dedicated to the physics of the GANIL Campaign using stable and radioactive beams (SPIRAL1) based on LoI sent in February Create the basis for defining the priorities for a detailed scientific program of the campaign Assess the technical feasibility, constrain the infrastructure and ancillary detectors integration. Identify common setup to be run in a row or physics case and collaborations

11 Physics cases for the AGATA campaign in GANIL Ru, Pd Zr, Mo 38 K 34 Ar 63 Ge 102 Sn 100 In 80 Zr 77 Y 75 Sr Ne,Na 46,48 Ca S,Cl,Ar,K 176 Hg Sm,Pm 58 Ni, 40 Ca N=Z 46 Ti SPIRAL1 194 Pb 78 Ni 132 In 80 Zn 68 Ni,Fe,Co,Cu 256 Rf 254 No 206 Hg Dy,Er,Yb Xe,Te Zr, Sr 238 U, 208 Pb n-rich o 47 Letters of Intents 48 Ca, 50 Ti SHE Cm,Bk Cf,Es o The equivalent of ~2006 UT are proposed hours of beam on target (669 days) o 4 main setups o Vamos in magnetic spectrometer o Vamos in gas-filled o Nwall + Diamant o DSSSD (SPIRAL1)

12 The first campaign will be AGATA + VAMOS (vacuum). (+ EXOGAM2 )(+ Plunger)(+...) in 2015 Proposals using this setup will be submitted to the next PAC meeting (April-May 2014). On the next th of February at GANIL : AGATA Collaboration Meeting to discuss the proposals based on the LoI, eventual new proposals, check the feasibility and eventual overlaps. All proposals have to be discussed at this meeting before being submitted to the PAC.

13 The AGATA Simulation team Core team: Marc Labiche (convener) Cesar Domingo-Pardo, Joa Ljungvall, Johan Nyberg, Extra support: - At GANIL: Marcin Palazc (N-Wall-NEDA), Grzegorz Jaworski (EXOGAM), Bart Bruyneel (FATIMA) - At GSI: Dan Bloor (LYCCA+AGATA), M. Reese (evt generator for plunger), - At Legnaro: Dino Bazzacco, Develop: - Code general improvement - Addition of Ancillary detector - Event generators - Background - Preliminary analysis codes Assist: - Installation - Running - Bug fixing Maintain: - Compatibility with GEANT4 distributions Perform simulations: - Of general interests (Source or Commissioning runs) - Of experiment proposals, Occasionally A tagged version is available on-line with AGATA, EXOGAM, NWALL, FATIMA, DIAMANT detectors and an event generator A detailed User Manual is available A one day training to prepare the collaboration meeting has been proposed (November 2013). All presentations are online

14 AGATA Configurations at GANIL E. Farnea et al, Nuclear Instruments and Methods in Physics Research A 621 (2010) E.Clément GANIL Scientific Council February 2013

15 AGATA Configurations at GANIL For the first campaign, the baseline configuration is VAMOS ++ (standard detection), AGATA and EXOGAM2 for spectroscopy and plunger measurements Additional detection systems are of the spokespersons responsibility GANIL is in charge of the beam section and target chamber design for most of the experiment Specific configuration will be treated case by case

16 Performance of the AGATA array 32 capsules are expected in early 2015 Additional detectors will be delivered during the campaign End of the campaign : 45 capsules covering 1p J. Ljungvall (CSNSM) M. Labiche (STFC) for the AGATA collaboration - Preliminary AGATA nominal 233 mm EXOGAM nominal 145 mm GSI phase LNL phase ~ 1.25 ~ 1.5

17 Performance of the AGATA array b =12% * ~ 4.7 ~ 12 *L. Grente et al. EPJ Web of Conference 62, (2013)

18 GANIL preparation STFC IKP IPHC GANIL IPHC GSI GANIL

19 GANIL preparation FEBIAD Tests (ISOLDE s VADIS) Test bench new radioactive elements (Na, Mg, Al, P, K, Mn, Fe, Cu) collaboration SPIRAL test at nominal power Preliminary results from last December 33 Cl; 29 P, 23 Mg, 37 K, 33 Ar, 25,26,29 Al, 21,25 Na, 20 F, 14 O, 38(m) K *On line yields at full power are according to expectation *First estimates (LoIs) are therefore still valid *Consolidated yields shall come soon

20 Planning: February 7 th of May 2014 : GSI beam time; Data taking January-May at GANIL : Specific infrastructure and mechanical installation AGATA is moving to GANIL by end of May Mechanical installation completed by end of June FEE-DAQ installation completed by end of July Autofill installation, detectors installation and cabling completed by end of July Detector cooling after summer break Source Test in September November December 2014 : In-beam Commissioning 2015 Physics campaign

21 Conclusion Many opportunities for the incoming campaign. New proposals are always welcome!! Installation will start at GANIL on June 2014 with a commissioning expected in December 2014 Next Sub-campaigns to be adjusted *1st (2015): VAMOS in vacuum mode (Spectro+plunger) *2nd ( ): gas-filled/neda: Depend of the availibity of these setups *3rd (2016-? ) : SPIRAL1 : DSSD-Coulex, MNT Next of February: AGATA Collaboration Meeting February (GANIL) prior to proposals submission PAC meeting in April-May 2014 (proposal submission next March) Data taking will start in early 2015 You are all welcome to participate to the installation and to the experimental campaign!

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24 LNL : 5TC 2012 GSI/FRS 5TC+3 DC 2014 GANIL/SPIRAL2 15TC AGATA D.+PRISMA Total Eff (compact). ~6% FRS Total Eff. (b=0.5) ~ 10% AGATA + VAMOS + (EXOGAM2) AGATA Eff Nominal. ~ 8% to 14% in close configuration

25 DIAMANT Solo; 2; AGATA solo; 1; 1% 3% MUST2; 1; 1% DSSD; 11; 16% NWALL; 18; 26% VAMOS(disp); 20; 29% VAMOS(gfm); 15; 21% VAMOS(disp) VAMOS(gfm) VAMOS(foc) NWALL DSSD DIAMANT Solo MUST2 AGATA solo o 47 Letters of Intents o The equivalent of ~2006 UT are proposed hours of beam on target (669 days) o 4 main setups o Vamos in magnetic spectrometer o Vamos in gas-filled o Nwall + Diamant o DSSSD (SPIRAL1) VAMOS(foc); 2; 3% Feasibility has been checked and technical solutions suggested Proponents are encourage to discuss with the experts of the ancillaries plunger spectro; 70; 81% plunger; 16; 19% We organize sub-campaigns by setup and investigate the technical issues case by case : Working Group Planning of upgrade of some ancillaries (gas-filled, NWALL, DIAMANT) spectro

26 RIB with A<80 up to 25 MeV/A GANIL delivers HI beams from 12 C to 238 U from MeV/A to ~100 MeV/A

27 Ancillaries DIAMANT : *Sufficient numbers of CsI detectors for replacement if needed. *The VXI system must be replaced *Spear NUMEXO2 modules for the EXOGAM -NEDA/NWALL arrays cover DIAMANT needs *No funding could be yet raised for the Digital signal processing (1 year of work) *New DIAMANT chamber needed. The IPN-Lyon has expressed its wish to do the design. NEDA-NWALL: *The collaboration plans to build up around 45 detectors of NEDA. Designs are now ready *Test at the beginning of next year for the first prototype *Electronics is going in parallel with EXOGAM2 and the production will start in October. *Full board ready to be tested by the beginning of 2014 in Valencia. *Coordination with the GALILEO project at LNL end of 2015 During this campaign at LNL, the NWALL array will be equipped with the new electronics

28 Ancillaries VAMOS-Gas-filled : *The French funding agencies ranked the gas-filled mode project with a B priority *Less performing but less expensive version (B plan) was evaluated (GANIL / Saclay). *The next funding request dead-line for 2014 grants is October 23 th *If green light is obtained in 2013, it is not excluded to be ready with the B plan mid The timetable for the two campaigns using the NEDA or VAMOS-gas-filled setups will be organized on the basis of the progress on the development of the instruments in 2015 Commissioning beginning of To complete the propose physics goals, an additional 1 year of beam time at GANIL might be necessary

29 Mechanic I. Burrows (STFC) M. Ozille, Geomètres,(GANIL) G. Gaudiot (IPHC)

30 Integration L. Menager, J. Ropert, P. Gangnant, M. Jean, M. Lemaitre, JL. Foucher,J. Goupil 330 optical wires: 220 from GSI 110 new AGATA Elec. AGATA EXOGAM Elec. Salle G1 DSS Cryogenic distribution 27 kw UPS Water cooling (independant block)

31 Mechanic Detectors support design done by STFC Daresbury in close collaboration with GANIL GANIL designs the additional platform GANIL takes in charge the integration work I. Burrows (STFC) M. Ozille, P. Gangnant (GANIL)

32 Target loader and beam line GANIL is in charge of the beam section and target chamber design for most of the experiment Specific configurations will be treated case by case DIAMANT AGATA Solo; 2; 3% MUST2; 1; 1% solo; 1; 1% Target loader : Detailed design done by GANIL We insure the compatibility for gas-filled, rotating target, plunger, fragile target, and standard spectroscopy DSSD; 11; 16% VAMOS(disp); 20; 29% NWALL; 18; 26% VAMOS(gfm); 15; 21% VAMOS(foc); 2; 3% M. Ozille, P. Gangnant, G. Fremont (GANIL)

33 VAMOS in gas-filled with AGATA and MUSETT (Island of a-emitter) Onset of collectivity induced by np pairing near N=Z and closed shells? Prompt spectroscopy of light Xe,Te,I isotopes a and p emitter M. Sandzelius et al., Phys. Rev. Lett. 99, (2007). Gas filled mode : 54 Fe+ 54 Fe 106 Te +2n (25 nb) 54 Fe+ 58 Ni 110 Xe +2n (50 nb) 54 Fe+ 58 Ni 109 I +p2n (10 mb)