المؤلفون: D'Andrea, M., Macculi, C., Lotti, S., Piro, L., Argan, A., Minervini, G., Torrioli, G., Chiarello, F., Barusso, L. Ferrari, Celasco, E., Gallucci, G., Gatti, F., Grosso, D., Rigano, M., Brienza, D., Cavazzuti, E., Volpe, A.

مصطلحات موضوعية: Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors

الوصف: We are developing the Cryogenic AntiCoincidence detector (CryoAC) of the ATHENA X-IFU spectrometer. It is a TES-based particle detector aimed to reduce the background of the instrument. Here, we present the result obtained with the last CryoAC single-pixel prototype. It is based on a 1 cm2 silicon absorber sensed by a single 2mm x 1mm Ir/Au TES, featuring an on-chip heater for calibration and diagnostic purposes. We have illuminated the sample with 55Fe (6 keV line) and 241Am (60 keV line) radioactive sources, thus studying the detector response and the heater calibration accuracy at low energy. Furthermore, we have operated the sample in combination with a past-generation CryoAC prototype. Here, by analyzing the coincident detections between the two detectors, we have been able to characterize the background spectrum of the laboratory environment and disentangle the primary (i.e. cosmic muons) and secondaries (mostly secondary photons and electrons) signatures in the spectral shape.
Comment: Accepted for publication in the Journal of Low Temperature Physics for LTD-20 special issue

الوصول الحر: http://arxiv.org/abs/2401.10827Test

المؤلفون: Celasco, E., Barusso, L. Ferrari, De Gerone, M., Gallucci, G., Grosso, D., Manfrinetti, P., Niazi, K., Repetto, L., Gatti, F.

المساهمون: Italian Space Agency, Università degli Studi di Genova

المصدر: Journal of Low Temperature Physics ; ISSN 0022-2291 1573-7357

مصطلحات موضوعية: Condensed Matter Physics, General Materials Science, Atomic and Molecular Physics, and Optics

الوصف: Superconducting Transition Edge Sensors employed in X-ray astrophysics space missions were realized and fully characterized in the Low temperature detector laboratory at UniGe. Several samples of Ir and Ir/Au bilayer films were grown by pulsed laser deposition at different deposition rate, varying thickness and resulting variability in critical temperature ( T c) was observed. In particular, we noticed two classes of films having discrete critical temperature ( T c), one at about the critical temperature of the bulk Ir and one at around 1.6 times compared to the bulk. Structural characterization was made and interesting correlation between critical temperature ( T c) and deposition conditions were found. Detailed X-Ray Diffraction investigations suggest a possible explanation of this effect with a clear correlation between microstrain value, grain size, and critical temperatures of the films. The study has been carried out to optimize the specified conditions to grow the film under which it is possible to accurately predict the critical temperature ( T c) by analyzing the X-ray diffraction patterns of Ir/Au films.

الإتاحة: https://doi.org/10.1007/s10909-023-03037-2Test

المؤلفون: D’Andrea, M., Macculi, C., Lotti, S., Piro, L., Argan, A., Minervini, G., Torrioli, G., Chiarello, F., Ferrari Barusso, L., Celasco, E., Gallucci, G., Gatti, F., Grosso, D., Rigano, M., Brienza, D., Cavazzuti, E., Volpe, A.

المساهمون: Istituto Nazionale di Astrofisica

المصدر: Journal of Low Temperature Physics ; ISSN 0022-2291 1573-7357

مصطلحات موضوعية: Condensed Matter Physics, General Materials Science, Atomic and Molecular Physics, and Optics

الوصف: We are developing the Cryogenic AntiCoincidence detector (CryoAC) of the ATHENA X-IFU spectrometer. It is a TES-based particle detector aimed to reduce the background of the instrument. Here, we present the result obtained with the last CryoAC single-pixel prototype. It is based on a 1 cm 2 silicon absorber sensed by a single 2 mm × 1 mm Ir/Au TES, featuring an on-chip heater for calibration and diagnostic purposes. We have illuminated the sample with 55 Fe (6 keV line) and 241 Am (60 keV line) radioactive sources, thus studying the detector response and the heater calibration accuracy at low energy. Furthermore, we have operated the sample in combination with a past-generation CryoAC prototype. Here, by analyzing the coincident detections between the two detectors, we have been able to characterize the background spectrum of the laboratory environment and disentangle the primary (i.e. cosmic muons) and secondaries (mostly secondary photons and electrons) signatures in the spectral shape.

الإتاحة: https://doi.org/10.1007/s10909-023-03034-5Test

المؤلفون: Ferrari Barusso, L., Tugliani, S., Fedkevych, M., Celasco, E., Gallucci, G., Grosso, D., Manfrinetti, P., Niazi, K., Gatti, F.

المساهمون: Italian Space Agency ASI

المصدر: IEEE Transactions on Applied Superconductivity ; volume 33, issue 5, page 1-4 ; ISSN 1051-8223 1558-2515 2378-7074

مصطلحات موضوعية: Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials

الإتاحة: https://doi.org/10.1109/tasc.2023.3257822Test
http://xplorestaging.ieee.org/ielx7/77/10024526/10073561.pdf?arnumber=10073561Test

المؤلفون: Borghesi, M., Alpert, B., Balata, M., Becker, D., Bennet, D., Celasco, E., Cerboni, N., De Gerone, M., Dressler, R., Faverzani, M., Fedkevych, M., Ferri, E., Fowler, J., Gallucci, G., Gard, J., Gatti, F., Giachero, A., Hilton, G., Koster, U., Labranca, D., Lusignoli, M., Mates, J., Maugeri, E., Nisi, S., Nucciotti, A., Origo, L., Pessina, G., Ragazzi, S., Reintsema, C., Schmidt, D., Schumann, D., Swetz, D., Ullom, J., Vale, L.

المصدر: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment ; volume 1051, page 168205 ; ISSN 0168-9002

مصطلحات موضوعية: Instrumentation, Nuclear and High Energy Physics

الإتاحة: https://doi.org/10.1016/j.nima.2023.168205Test
https://api.elsevier.com/content/article/PII:S016890022300195X?httpAccept=text/xmlTest
https://api.elsevier.com/content/article/PII:S016890022300195X?httpAccept=text/plainTest

المؤلفون: Origo L., Alpert B., Balata M., Becker D., Bennett D., Bevilacqua A., Borghesi M., Celasco E., Cerboni N., Ceruti G., De Gerone M., Dressler R., Faverzani M., Ferri E., Fowler J., Gallucci G., Gard J., Gatti F., Giachero A., Hilton G., Köster U., Labranca D., Lusignoli M., Mates J., Maugeri E., Moretti R., Nisi S., Nucciotti A., Parodi L., Pessina G., Ragazzi S., Reintsema C., Schmidt D., Schumann D., Siccardi F., Swetz D., Ullom J., Vale L.

المساهمون: Origo, L, Alpert, B, Balata, M, Becker, D, Bennett, D, Bevilacqua, A, Borghesi, M, Celasco, E, Cerboni, N, Ceruti, G, De Gerone, M, Dressler, R, Faverzani, M, Ferri, E, Fowler, J, Gallucci, G, Gard, J, Gatti, F, Giachero, A, Hilton, G, Köster, U, Labranca, D, Lusignoli, M, Mates, J, Maugeri, E, Moretti, R, Nisi, S, Nucciotti, A, Parodi, L, Pessina, G, Ragazzi, S, Reintsema, C, Schmidt, D, Schumann, D, Siccardi, F, Swetz, D, Ullom, J, Vale, L

مصطلحات موضوعية: Calorimetric approach, Current statu, Higher time resolution, Ion implanted, Mass measurement, Micro-calorimeter, Neutrino ma, Spectra', State of the art, Transition-edge sensors

الوصف: This work summarizes the current status of HOLMES, a calorimetric experiment for the direct neutrino mass measurement. The state-of-the-art in this field is represented by the KATRIN spectrometer that is under data-taking aiming at a sensitivity of 0.2 eV. HOLMES will prove the feasibility of the calorimetric approach, that is an alternative method to the spectrometric one. HOLMES detectors are Transition Edge Sensors in which a source of 163Ho will be ion-implanted. These microcalorimeters allow a multiplexed readout and ensure high energy and time resolutions. 163Ho is an interesting candidate for the direct neutrino mass determination. In fact, the low Q-value (∼2.83 keV) of its electron capture decay increases the fraction of useful events in the region close to the end-point. HOLMES will assess mν by analyzing the spectrum deformation due to a non-zero mν. This contribution describes the detector working principles, their fabrication for HOLMES and their characterization. At the same time, a focus on the ion-implantation is given together with the latest results from its tests. HOLMES is now close to the first low-dose measurement. By implanting a small 163Ho activity per detector it will be possible to fine-tune the entire experimental procedure and also to analyze a preliminary spectrum in order to assess an initial upper limit on mν of about ∼ 10 eV.

العلاقة: ispartofbook:41st International Conference on High Energy Physics, ICHEP 2022; 41st International Conference on High Energy Physics, ICHEP 2022 - 6 July 2022 through 13 July 2022; volume:414; journal:POS PROCEEDINGS OF SCIENCE; https://hdl.handle.net/10281/477863Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85149914545; https://pos.sissa.it/414Test/

الإتاحة: https://doi.org/10.22323/1.414.0625Test
https://hdl.handle.net/10281/477863Test
https://pos.sissa.it/414Test/

المؤلفون: Celasco, E., Celasco, M., Eggenhoeffner, R.

مصطلحات موضوعية: Condensed Matter - Statistical Mechanics

الوصف: An outstanding topic on noise phenomena is the occurrence of peaked structures in many natural systems in a wide range 10^-1 - 10^6 Hz. All existing theories failed to explain this issue. The present theory based on first prin-ciple statistics of elementary events clustered in time-amplitude correlated large avalanches leads to a noise spectral power master equation suitable for any peaked noise spectra. The excellent agreement with our current noise experiments in high Tc superconductors in the dendritic regime and with optical noise experiments in E.coli demonstrates firstly that avalanche correlation is the physical source of spectral peaks.
Comment: 8 pages - 3 fiures

الوصول الحر: http://arxiv.org/abs/cond-mat/0608092Test

المؤلفون: Massella D., Celasco E., Salaun F., Ferri A., Barresi A.

المساهمون: Massella, D., Celasco, E., Salaun, F., Ferri, A., Barresi, A.

مصطلحات موضوعية: Nanoparticle, Caffeine, Flash NanoPrecipitation, Solvent Displacement, Drug delivery, PCL, CIJM, Drug Loading, Encapsulation Efficiency, Hydrophilic

وصف الملف: ELETTRONICO

العلاقة: ispartofbook:Abstracts of Conference “Polymers: Design, Function and Application”; Conference “Polymers: Design, Function and Application (Polymers 2018)”; firstpage:138 [sciforum-016634]; numberofpages:1; http://hdl.handle.net/11583/2788100Test; https://sciforum.net/conference/polymers-2018/page/138Test

الإتاحة: http://hdl.handle.net/11583/2788100Test
https://sciforum.net/conference/polymers-2018/page/138Test

المؤلفون: Celasco E., Barusso L. F., De Gerone M., Gallucci G., Grosso D., Manfrinetti P., Manzato G., Repetto L., Schott M., Gatti F.

المساهمون: Celasco, E., Barusso, L. F., De Gerone, M., Gallucci, G., Grosso, D., Manfrinetti, P., Manzato, G., Repetto, L., Schott, M., Gatti, F.

وصف الملف: ELETTRONICO

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000892921800002; volume:33; firstpage:1; lastpage:5; numberofpages:5; journal:IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY; https://hdl.handle.net/11567/1100160Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85140795037

الإتاحة: https://doi.org/10.1109/TASC.2022.3215894Test
https://hdl.handle.net/11567/1100160Test

المؤلفون: Celasco,E., Sangermano,M.

المساهمون: Celasco, E., Sangermano, M.

مصطلحات موضوعية: Graphene, reduced graphene oxide, surface chemistry

الوصف: Graphene (G) presents a huge variety of intriguing properties, as extraordinary electronic transport characteristics. G, thanks to its low chemical reactivity, can also be used as an active support for catalytic nanoparticles. Some possible graphene application could be: its employment in active material in electronic devices such as sensors [1], batteries [2], supercapacitors, hydrogen storage systems or as fillers to produce multifunctional nanocomposite polymeric materials [3]. In more detail we would like to examine: different approach of reduction and functionalization of in situ reduced graphene oxide obtaining an enhancement of thermal conductivity and an resistivity decrease [4]. Surface modification and functionalization of rGO to improve its dispersion in organic solvent and also polymeric matrix [5].

وصف الملف: STAMPA

العلاقة: firstpage:460; lastpage:464; numberofpages:5; journal:ADVANCED MATERIALS LETTERS; http://hdl.handle.net/11567/957770Test

الإتاحة: https://doi.org/10.5185/amlett.2019.2201Test
http://hdl.handle.net/11567/957770Test