1. Munich GERDA/Majorana MC Meeting 15-16.02.07
GERDA experiment background due to holder system
and detector radioactive contaminations.
Phase I
Alexander A. Klimenko
Joint Institute of Nuclear Research, Dubna, Russia Institute of Nuclear Research of RAS, Moscow, Russia

2. Conceptions 1. Phase I 2. MaGe – version 11-12-2006
3. Holder/suspension systems & HPGe’s
4. Liquid Argon was done
5. 238U and 232Th chains in equilibrium
6. Contributions from 214Bi and 208Tl
7. Copper material
8. Anticoincidence
9. Mass scaling ================

6. Summary Demands on radioactive contaminations for holder and
Suspension systems are in region of current technology
Possibilities for Phase I of GERDA experiment.