Luis M Fraile ISOLDE, PHIS, CERN, Switzerland Universidad Complutense, Madrid, SPAIN

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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
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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
LaBr3(Ce)/BaF2 TIMING Fast response ?-detectors
Poor energy resolution Stop detectors
Plastic ? scintillator TIMING Fast response
Efficient start detector
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The Advanced Time Delayed ????(t) method
?BaF2HPGe / ?LaBr3HPGe 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

?HPGeHPGe coincidences, level scheme
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The Advanced Time Delayed ????(t) method

• ? T1/2
• ? Branchings
• B(X??) transition rates
• Shell closures
• N82 Z50 double shell closure
• N20 island of inversion
• ...
• Evolution of collectivity
• Quadrupole deformation
• Octupole correlations
• B(E22 ? 0) systematics in n-rich exotic
  nuclei
• vs. CoulEx / vs. differential plunger method

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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

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140Ba and 140La decay
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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

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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 RD projects enhancing the ATD method and
  its range of applicability
• Coordination of RD 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. LaBr3Ce for PAC)

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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