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R3B CALORIMETER
Reaction experiments at relativistic energies


Large dynamical range p ? ? Spectrometer
((2-3),lt5 ?E/E _at_1MeV) ?, p Total
absorption(80, p up to 200 MeV)
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NUSTAR CALORIMETER Working Group
Coordinator D. Cortina R3B (D.Cortina) /
EXL (J.A. Scarpaci)/ DESPEC (J.L Taín) Created in
February 2005 Goal Find synergies between the
different calorimeters in NUSTAR
particular stress in the RD and Desing phase
but also common front to negociate with
providers List 50 members, 16 Institutions , 11
countries Communication Mailing list, Web
page www.usc.es/genp/r3b , regular meetings,
Videoconference
R3B USC (Spain), LUND (Sweden), IEM (Spain), GSI
(Germany), Chalmers(Sweden), Daresbury (UK),
Univ. Complutense(Spain), TU Munich(Germany), TU
Darmstadt(Germany), UVigo (Spain), Uni Lisboa
(Portugal)
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Characterisation of existing or new scintillation
materials and photo-sensors properties.

• Intrinsic energy resolution, density
• Maximum light emission
• hygroscopic
• price !!!!

• stop and measured high energy
• p and ? (thick)?
• high granularity (for relativistic energies)

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CALIFA
Kinematical considerations
g emmited by a source _at_ 700 MeV/nucleon


1. Doppler shift
2. Angular distribution
The effective energy in the detectors can be up
a factor 3 larger
90 of the emission is between 7-130 degrees
3. Doppler broadening
Gamma tracking of very hig segmentation Is
mandatory
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Detection of g-rays emitted by relativistic
sources
Scintillator perfomaces versus semiconductor Ge
detectors
Ge detectors provide excelent energy resolution
(below 1)
.......But have low efficiency
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R3B Interim MoU
R3B Cost Matrix
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• Sharing costs and responsabilities

Total CALIFA 3.2 M (price 2005) Spanish
contribution 1.2 M 45 of the estimated
costs 8 of R3B 270 k iToF 500 k
common funds
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RD CALIFA Working Tasks
IEM ? Forward part, electronics, simulations USC
? General design, simulations, Barrel part UVi ?
Engineering design and mechanical structure
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CALIFA Working plan
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