Krystal Alfonso
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Krystal Alfonso has a total of 162 co-authors. Here are the top co-authors by number of shared publications:
- Andrea Giachero
Dipartimento di Fisica, Università di Milano-Bicocca, I-20126 Milano, Italy
4 shared publications - Claudio Gotti
INFN Sezione di Milano-Bicocca
3 shared publications - Gianluigi Pessina
Istituto Nazionale di Fisica Nucleare Sezione di Milano Bicocca
3 shared publications - L. Cassina
Dipartimento di Fisica, Università di Milano-Bicocca, Milan, Italy
3 shared publications - L. Marini
INFN-Sezione di Genova, Genova, Italy
3 shared publications - Paolo Carniti
INFN, Sezione di Milano-Bicocca
3 shared publications
Latest Publications
- Open Access
- 24 September 2019
- Published by Springer Nature in The European Physical Journal C
- Vol. 79 (9) , 1-9
Double-beta decay of $^{130}\hbox {Te}$ to the first $0^+$ excited state of $^{130}\hbox {Xe}$ with CUORE-0We report on a search for double beta decay of $$^{130}\hbox {Te}$$ to the first $$0^{+}$$ excited state of $$^{130}\hbox {Xe}$$ using a $$9.8\,\hbox {kg}\cdot \hbox {yr}$$ exposure of $$^{130}\hbox {Te}$$ collected with the CUORE-0 experiment. In this work we exploit different topologies of coincident events to search for both the neutrinoless and two-neutrino double beta decay modes. We find no evidence for either mode and place lower bounds on the half-lives: $$T^{0\nu }_{0^+_1}>7.9\cdot 10^{23}\hbox {yr}$$ and $$T^{2\nu }_{0^+_1}>2.4\cdot 10^{23}\hbox {yr}$$ ( $$90\%\,\hbox {CL}$$ ). Combining our results with those obtained by the CUORICINO experiment, we achieve the most stringent constraints available for these processes: $$T^{0\nu }_{0^+_1}>1.4\cdot 10^{24}\hbox {yr}$$ and $$T^{2\nu }_{0^+_1}>2.5\cdot 10^{23}\hbox {yr}$$ ( $$90\%\,\hbox {CL}$$ ).- 24 September 2019
- Published by Springer Nature in The European Physical Journal C
- Vol. 79 (9) , 1-9
Open AccessDouble-beta decay of $^{130}\hbox {Te}$ to the first $0^+$ excited state of $^{130}\hbox {Xe}$ with CUORE-0We report on a search for double beta decay of $$^{130}\hbox {Te}$$ to the first $$0^{+}$$ excited state of $$^{130}\hbox {Xe}$$ using a $$9.8\,\hbox {kg}\cdot \hbox {yr}$$ exposure of $$^{130}\hbox {Te}$$ collected with the CUORE-0 experiment. In this work we exploit different topologies of coincident events to search for both the neutrinoless and two-neutrino double beta decay modes. We find no evidence for either mode and place lower bounds on the half-lives: $$T^{0\nu }_{0^+_1}>7.9\cdot 10^{23}\hbox {yr}$$ and $$T^{2\nu }_{0^+_1}>2.4\cdot 10^{23}\hbox {yr}$$ ( $$90\%\,\hbox {CL}$$ ). Combining our results with those obtained by the CUORICINO experiment, we achieve the most stringent constraints available for these processes: $$T^{0\nu }_{0^+_1}>1.4\cdot 10^{24}\hbox {yr}$$ and $$T^{2\nu }_{0^+_1}>2.5\cdot 10^{23}\hbox {yr}$$ ( $$90\%\,\hbox {CL}$$ ). - Open Access
- 1 February 2018
- Published by IOP Publishing in Journal of Instrumentation
- Vol. 13 (02) , P02029
A high precision pulse generation and stabilization system for bolometric experiments
- 1 February 2018
- Published by IOP Publishing in Journal of Instrumentation
- Vol. 13 (02) , P02029
Open AccessA high precision pulse generation and stabilization system for bolometric experiments
- Open Access
- 1 February 2017
- Published by IOP Publishing in Journal of Instrumentation
- Vol. 12 (02) , C02055
The CUORE cryostat and its bolometric detector
CUORE is a cryogenic detector that will be operated at LNGS to search for neutrinoless double beta decay (0νββ) of 130Te. The detector installation was completed in summer 2016. Before the installation, several cold runs were done to test the cryogenic system performance. In the last cold run the base temperature of 6.3 mK was reached in stable condition. CUORE-0, a CUORE prototype, has proven the feasibility of CUORE, demonstrating that the target background of 0.01 counts/keV/kg/y and the energy resolution of 5 keV are within reach.
- 1 February 2017
- Published by IOP Publishing in Journal of Instrumentation
- Vol. 12 (02) , C02055
Open AccessThe CUORE cryostat and its bolometric detector
CUORE is a cryogenic detector that will be operated at LNGS to search for neutrinoless double beta decay (0νββ) of 130Te. The detector installation was completed in summer 2016. Before the installation, several cold runs were done to test the cryogenic system performance. In the last cold run the base temperature of 6.3 mK was reached in stable condition. CUORE-0, a CUORE prototype, has proven the feasibility of CUORE, demonstrating that the target background of 0.01 counts/keV/kg/y and the energy resolution of 5 keV are within reach.
- 14 January 2013
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 60 (2) , 520-527
MCNP Simulation Benchmarks for a Portable Inspection System for Narcotics, Explosives, and Nuclear Material Detection
MCNPX simulations have been used to guide the development of a portable inspection system for narcotics, explosives, and special nuclear material (SNM) detection. The system seeks to address these threats to national security by utilizing a high-yield, compact neutron source to actively interrogate the threats and produce characteristic signatures that can then be detected by radiation detectors. The portability of the system enables rapid deployment and proximity to threats concealed in small spaces. Both dD and dT electronic neutron generators (ENG) were used to interrogate ammonium nitrate fuel oil (ANFO) and cocaine hydrochloride, and the detector response of NaI, CsI, and LaBr3 were compared. The effect of tungsten shielding on the neutron flux in the gamma ray detectors was investigated, while carbon, beryllium, and polyethylene ENG moderator materials were optimized by determining the reaction rate density in the threats. In order to benchmark the modeling results, experimental measurements are compared with MCNPX simulations. In addition, the efficiency and die-away time of a portable differential die-away analysis (DDAA) detector using 3He proportional counters for SNM detection has been determined.
- 14 January 2013
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 60 (2) , 520-527
MCNP Simulation Benchmarks for a Portable Inspection System for Narcotics, Explosives, and Nuclear Material Detection
MCNPX simulations have been used to guide the development of a portable inspection system for narcotics, explosives, and special nuclear material (SNM) detection. The system seeks to address these threats to national security by utilizing a high-yield, compact neutron source to actively interrogate the threats and produce characteristic signatures that can then be detected by radiation detectors. The portability of the system enables rapid deployment and proximity to threats concealed in small spaces. Both dD and dT electronic neutron generators (ENG) were used to interrogate ammonium nitrate fuel oil (ANFO) and cocaine hydrochloride, and the detector response of NaI, CsI, and LaBr3 were compared. The effect of tungsten shielding on the neutron flux in the gamma ray detectors was investigated, while carbon, beryllium, and polyethylene ENG moderator materials were optimized by determining the reaction rate density in the threats. In order to benchmark the modeling results, experimental measurements are compared with MCNPX simulations. In addition, the efficiency and die-away time of a portable differential die-away analysis (DDAA) detector using 3He proportional counters for SNM detection has been determined.