Model of the Response Function of CUORE Bolometers

ForewordAcknowledgements1 Neutrino masses and double beta decay1.1 Oscillations 1.2 Masses 1.3 Double beta decay 1.3.1 Nuclear matrix elements 1.4 Experimental searches for neutrinoless double beta decay 1.4.1 Past and present experiments 1.4.2 Future experiments

2 TeO2 bolometric detectors for 0_DBD search2.1 Bolometric detectors 2.1.1 The energy absorber 2.1.2 The choice of TeO2  2.1.3 The sensor 2.1.4 NTD-Ge thermistors 2.2 Bolometer operation 2.3 Arrays of TeO2 bolometers 2.4 Cryogenic setups 2.5 Signal readout 2.5.1 Measurement of the static resistance 2.6 Detector noise 2.7 CUORICINO and CUORE

3 Model of the response function of CUORE bolometers3.1 The CCVR run 3.2 The Model 3.2.1 Thermistor model 3.2.2 Biasing circuit 3.2.3 Bessel filter 3.2.4 Thermal model 3.2.5 Simplified model without temperature dependences 3.2.6 Fit to data 3.2.7 Response function simulation 3.2.8 Amplitude dependence on the working temperature 3.2.9 Extraction of RS from the relationship between amplitude and baseline 4 Thermal response analysis4.1 Data analysis procedure 4.2 The Thermal Response algorithm 4.3 Check of the TR algorithm on MonteCarlo data 4.4 Data analysis 4.4.1 Calibration 4.5 Residual drift in time 4.6 Sources of systematic errors 4.6.1 Choice of the derivative algorithm 4.6.2 Error on the biasing and read-out circuits parameters

5 Thermal response analysis on the Three Towers detector5.1 The Three Towers detector 5.2 Measurements of model parameters 5.2.1 Measurement of V G RS and VS  5.2.2 Measurement of G/GS  5.2.3 Measurement of RL  5.2.4 Measurement of VBGS  5.2.5 Measurement of cp  5.3 Results on calibration data 5.4 Results on background data 5.5 Future developments

6. ConclusionsAppendix A Thermal response analysis on the CCVR detectorAppendix B Precision measurements on the Three Towers detector

Marco Vignati received his Master Degree in Physics from the Università di Roma - La Sapienza in June 2004 with final mark 110/110 cum laude. His degree thesis was entitled "CP asymmetry measurement within b?s transitions with the BaBar experiment" and his supervisors were Prof. Fernando Ferroni and Dr. Gianluca Cavoto. In January 2010 he received his Ph.D. in Physics from the same University under the supervision of Prof. Fernando Ferroni.