Luis M Fraile ISOLDE, PH/IS, CERN, Switzerland Universidad Complutense, Madrid, SPAIN FastPool Fast timing pool of detectors and electronics FastPool EURONS  EURISOL-DS Town Meeting, Espoo, 17 September 2007

Helsinki Town meeting 19 September 2007 L.M. Fraile [H. Mach et al., NPA 523 (1991) 197] HPGe LaBr 3 (Ce) BaF 2 ISOLDE beam  (NE111A) The Advanced Time Delayed  (t) method HPGe: BRANCH SELECTION High energy resolution Poor time response LaBr 3 (Ce)/BaF 2 : TIMING Fast response γ-detectors Poor energy resolution Stop detectors Plastic  scintillator: TIMING Fast response Efficient start detector stop start  11 22 T 1/2 TAC

Helsinki Town meeting 19 September 2007 L.M. Fraile The Advanced Time Delayed  (t) method TAC  –BaF 2 –HPGe /  –LaBr 3 –HPGe: lifetime measurements  –HPGe–HPGe: coincidences, level scheme De-convolution of slope Slope = T 1/2 Range: 30 ps to 30 ns (or longer) 3-5% precision Centroid shift Shift in centroid position =  Range: down to ~5-10 ps

Helsinki Town meeting 19 September 2007 L.M. Fraile  T 1/2  Branchings B(X  ) transition rates → Shell closures: N=82 Z=50 double shell closure N=20 island of inversion... → Evolution of collectivity Quadrupole deformation Octupole correlations → B(E2;2 +  0 + ) systematics in n-rich exotic nuclei vs. CoulEx / vs. differential plunger method The Advanced Time Delayed  (t) method

Helsinki Town meeting 19 September 2007 L.M. Fraile Fast timing across European Facilities ISOLDE → Mg → Sb, 136 Te... → 148 Ba... → 229,231 Ra, 231 Ac, 226 Th... JYFL → 112 Ru, 112 Pd, 114 Pd GANIL ILL Grenoble … → First Application of LaBr 3 (Ce) to timing, ISOLDE 2006

Helsinki Town meeting 19 September 2007 L.M. Fraile 140 Ba and 140 La decay

Helsinki Town meeting 19 September 2007 L.M. Fraile FastPool Improve the coordination of European resources used in spectroscopy studies with the ATD method → Profit from existing experience and scientific achievements → Explore new physics opportunities → Exploit technical advances → Natural extension of the Fast Timing pool of electronics Network over 4 years 16 participant institutions from 10 countries

Helsinki Town meeting 19 September 2007 L.M. Fraile Goals Sharing → State-of-the-art equipment for ATD spectroscopy for leading experiments at EU research infrastructures New physics opportunities → Identify needs for instrumentation and new techniques → Facilitate novel research programmes in these facilities Coordination → New R&D projects enhancing the ATD method and its range of applicability → Coordination of R&D work on fast response scintillators with other projects New collaborations → Encourage exchange information at the European nuclear physics community. Future opportunities → Large arrays of fast timing crystals → Future facilities (HIE-ISOLDE, SPIRAL2, FAIR, EURISOL) → New fields (i.e. LaBr 3 :Ce for PAC)

Helsinki Town meeting 19 September 2007 L.M. Fraile Participants ISOLDE, CERN, Geneva, SWITZERLAND Uppsala University, Uppsala, SWEDEN Universidad Complutense de Madrid, Madrid, SPAIN LPSC, Grenoble, FRANCE University of Sofia, Sofia, BULGARIA Institute of Nuclear Physics, University of Cologne, Cologne, GERMANY INFN-LNL, Legnaro, ITALY IFJ PAN, Krakow, POLAND IEM-CSIC, Madrid, SPAIN Physics Department, University of Warsaw, POLAND ILL, Grenoble, FRANCE CSNSM, Orsay, FRANCE University of Surrey, Guildford, UNITED KINGDOM IPN, Orsay, FRANCE SINS, Swierk, POLAND NIPNE, ROMANIA