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Luis M Fraile ISOLDE, PH/IS, CERN, Switzerland Universidad Complutense, Madrid, SPAIN

Luis M Fraile ISOLDE, PH/IS, CERN, Switzerland Universidad Complutense, Madrid, SPAIN. FastPool Fast timing pool of detectors and electronics. EURONS  EURISOL-DS Town Meeting, Espoo, 17 September 2007. . BaF 2.  1. T 1/2. HPGe.  2.  ( NE111A ). ISOLDE beam. LaBr 3 (Ce).

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Luis M Fraile ISOLDE, PH/IS, CERN, Switzerland Universidad Complutense, Madrid, SPAIN

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

  2. BaF2 1 T1/2 HPGe 2  (NE111A) ISOLDE beam LaBr3(Ce) The Advanced Time Delayed (t) method start TAC stop [H. Mach et al., NPA 523 (1991) 197] HPGe:BRANCH SELECTION High energy resolution Poor time response Plastic  scintillator: TIMING Fast response Efficient start detector LaBr3(Ce)/BaF2: TIMING Fast response γ-detectors Poor energy resolution Stop detectors

  3. The Advanced Time Delayed (t) method –BaF2–HPGe / –LaBr3–HPGe: lifetime measurements TAC • De-convolution of slope • Slope = T1/2 • Range: 30 ps to 30 ns (or longer) • 3-5% precision • Centroid shift • Shift in centroid position =  • Range: down to ~5-10 ps –HPGe–HPGe: coincidences, level scheme

  4. The Advanced Time Delayed (t) method  T1/2  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

  5. Fast timing across European Facilities • ISOLDE • 30-33Mg • 134-137Sb, 136Te... • 148Ba... • 229,231Ra, 231Ac, 226Th... • JYFL • 112Ru, 112Pd, 114Pd • GANIL • ILL Grenoble • … • First Application of LaBr3(Ce) to timing, ISOLDE 2006

  6. 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

  7. 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. LaBr3:Ce for PAC)

  8. 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, UNITEDKINGDOM IPN, Orsay, FRANCE SINS, Swierk, POLAND NIPNE, ROMANIA

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