C. Briancon et al., THE HIGH-SENSITIVITY DOUBLE-BETA SPECTROMETER TGV, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 372(1-2), 1996, pp. 222-228
A high sensitivity double beta spectrometer TGV (Telescope Germanium V
ertical) has been developed. It is based on 16 HPGe detectors of volum
e 1200 X 6 mm(3) each in the same cryostat. The TGV spectrometer was p
roposed for the study of ultrarare nuclear processes (e.g. 2 nu beta b
eta, O nu beta beta, 2 nu EC/EC). Details of the TGV spectrometer cons
truction are described, the principles of background suppression, the
results of Monte Carlo simulations and the results of test background
measurements (in Dubna and Modane underground laboratory) are provided
.