Developpement of a low background Ge detector (in collaboration with Canberra-Eurisys) Ge Goal : Reduce the background by one order of magnitude for E.

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Presentation transcript:

Developpement of a low background Ge detector (in collaboration with Canberra-Eurisys) Ge Goal : Reduce the background by one order of magnitude for E  < 600keV, with a resolution at 122 keV :  750 eV. Characteristics : Crystal : Surface : 5000 mm 2 Thickness : 30 mm Endcup and support in Aluminium Pechiney (measured at Grand Sasso) JRA1-Pia Loaiza, Feb.2006

Background estimation according to simulations MaterialConfig. I Config. II Config. III Endcup0,860,560,11 Support1,060,680,01 Cold finger0,150,002 Insulator1,360,0120,01 FET< 0,310,00 TOTAL6,461,280,15 At 238 keV, in counts/day: JRA1-Pia Loaiza, Feb.2006

Planning : Tender will be published next week Command beggining of March 8 to 12 months for realisation JRA1-Pia Loaiza, Feb.2006 Cryogenerator : Pulse Tube