We present GeFRO (Germanium FROntend) a novel approach to the readout of ionization detectors. The circuit allows to minimize the number of components and the space occupation close to the detector. This way a minimal impact is added on the radioactive background in those experiments where very low signal rates are expected, such as GERDA and MAJORANA. The circuit consists of a JFET transistor and a remote second stage. The DC feedback path is closed using a diode. Only two signal cables are necessary for biasing and readout
Cattadori, C., Gallese, B., Giachero, A., Gotti, C., Maino, M., Pessina, G. (2011). A new approach to the readout of cryogenic ionization detectors: GeFRO. JOURNAL OF INSTRUMENTATION, 6(5) [10.1088/1748-0221/6/05/P05006].
A new approach to the readout of cryogenic ionization detectors: GeFRO
GIACHERO, ANDREA;GOTTI, CLAUDIO
;MAINO, MATTEO;Pessina, G.
2011
Abstract
We present GeFRO (Germanium FROntend) a novel approach to the readout of ionization detectors. The circuit allows to minimize the number of components and the space occupation close to the detector. This way a minimal impact is added on the radioactive background in those experiments where very low signal rates are expected, such as GERDA and MAJORANA. The circuit consists of a JFET transistor and a remote second stage. The DC feedback path is closed using a diode. Only two signal cables are necessary for biasing and readout
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