Roberto Battiston | Istituto Nazionale di Fisica Nucleare (original) (raw)
Uploads
Papers by Roberto Battiston
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014
The Alpha Magnetic Spectrometer (AMS) is a state of the art particle physics experiment for the e... more The Alpha Magnetic Spectrometer (AMS) is a state of the art particle physics experiment for the extraterrestrial study of antimatter, matter and missing matter. AMS successfully completed the precursor STS91 Discovery flight (June 2nd-12th, 1998), completing 152 orbits at 52 degrees of latitude and about 400 km of height, collecting more than 100 million CR events. In this paper we report on the first flight experience and we present preliminary results on the search for nuclear antimatter. No antimatter nuclei with Z>=2 were detected. We obtain a model dependent upper limit on the anti-He /He flux 2, improving the results of previous published searches performed with stratospheric balloons.
Exp. Astron. 19 (2021), 2021
Multimessenger astrophysics is based on the detection, with the highest possible accuracy, of the... more Multimessenger astrophysics is based on the detection, with the highest possible accuracy, of the cosmic radiation. During the last 20 years, the advent space-borne magnetic spectrometers in space (AMS-01, Pamela, AMS-02), able to measure the charged cosmic radiation separating matter from antimatter, and to provide accurate measurement of the rarest components of Cosmic Rays (CRs) to the highest possible energies, have become possible, together with the ultra-precise measurement of ordinary CRs. These developments started the era of precision Cosmic Ray physics providing access to a rich program of high-energy astrophysics addressing fundamental questions like matter-antimatter asymmetry, indirect detection for Dark Matter and the detailed study of origin, acceleration and propagation of CRs and their interactions with the interstellar medium. In this paper we address the above-mentioned scientific questions, in the context of a second generation, large acceptance, superconducting ...
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 1998
Physics Letters B, 2000
v , V. Plyaskin ab , V. Pojidaev ab , 0370-2693r00r$ -see front matter q 2000 Elsevier Science B.... more v , V. Plyaskin ab , V. Pojidaev ab , 0370-2693r00r$ -see front matter q 2000 Elsevier Science B.V. All rights reserved.
Nuclear Physics B-Proceedings Supplements, 2007
AMS-02 is a space borne magnetic spectrometer designed to measure with accuracies up to one part ... more AMS-02 is a space borne magnetic spectrometer designed to measure with accuracies up to one part in 10 9 the composition of Cosmic Rays near Earth. With a large acceptance ( View the MathML source sr), an intense magnetic field from a superconducting magnet (0.7 T) ...
Physical Review Special …, 2008
This paper presents a detailed study of the deflection phenomena of a 400 GeV=c proton beam impin... more This paper presents a detailed study of the deflection phenomena of a 400 GeV=c proton beam impinging on a new generation of bent silicon crystals; the tests have been performed at the CERN Super Proton Synchrotron H8 beam line. Channeling and volume reflection angles are measured with an extremely precise goniometer and with high resolution silicon microstrip detectors. Volume reflection has been observed and measured for the first time at this energy, with a single-pass efficiency as large as 98%, in good agreement with the simulation results. This efficiency makes volume reflection a possible candidate for collimation with bent crystals at the CERN Large Hadron Collider.
IEEE Transactions on Nuclear Science, 2006
Silicon Photomultipliers (SiPMs) with quantum efficiency maximized for a wavelength between 420 a... more Silicon Photomultipliers (SiPMs) with quantum efficiency maximized for a wavelength between 420 and 470 nm have been developed at ITC-irst Trento (Italy), and are being tested for their application in the construction of a ultra high resolution small animal PET tomograph. The devices have an area of 1 mm x 1 mm and 625 microcells. The breakdown voltage is around 30 V, and the gain of the order of 10 6 . The intrinsic timing resolution is 70 ps rms at the single photoelectron level. The first tests as readout for scintillators show an energy resolution of 21% FWHM with Na-22 employing LSO crystals. The first matrices of SiPMs have been produced and are being tested.
Physics Reports-review Section of Physics Letters, 2002
The Alpha Magnetic Spectrometer (AMS) was own on the space shuttle Discovery during ight STS-91 (... more The Alpha Magnetic Spectrometer (AMS) was own on the space shuttle Discovery during ight STS-91 (June 1998) in a 51:7
Physics Letters B, 2000
The proton spectrum in the kinetic energy range 0.1 to 200 GeV was measured by the Alpha Magnetic... more The proton spectrum in the kinetic energy range 0.1 to 200 GeV was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at an altitude of 380 km. Above the geomagnetic cutoff the observed spectrum is parameterized by a power law. Below the geomagnetic cutoff a substantial second spectrum was observed concentrated at equatorial latitudes with a flux ∼70 m −2 sec −1 sr −1 . Most of these second spectrum protons follow a complicated trajectory and originate from a restricted geographic region.
IEEE Transactions on Nuclear Science, 2007
This paper reports on the electrical characterization of the first prototypes of Geiger-Mode Aval... more This paper reports on the electrical characterization of the first prototypes of Geiger-Mode Avalanche Photodiodes (GM-APDs) and Silicon Photomultipliers (SiPMs) produced at ITC-irst, Trento. Both static and functional measurements have been performed in dark condition. The static tests, consisting in reverse and forward IV measurements, have been performed on 20 GM-APDs and 90 SiPMs. The breakdown voltage, the quenching resistance value and the current level have been proved to be very uniform. On the other hand, the analysis of the dark signals allowed the extraction of important properties such as the dark count rate, the gain, the after-pulse and optical cross-talk (in case of the SiPMs) rates. These parameters have been evaluated as a function of the bias voltage, showing trends perfectly compatible with the theory of the device.
Physical Review Letters, 2007
The volume reflection phenomenon was detected while investigating 400 GeV proton interactions wit... more The volume reflection phenomenon was detected while investigating 400 GeV proton interactions with bent silicon crystals in the external beam H8 of the CERN Super Proton Synchrotron. Such a process was observed for a wide interval of crystal orientations relative to the beam axis, and its efficiency exceeds 95%, thereby surpassing any previously observed value. These observations suggest new perspectives for the manipulation of high-energy beams, e.g., for collimation and extraction in new-generation hadron colliders, such as the CERN Large Hadron Collider.
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014
The Alpha Magnetic Spectrometer (AMS) is a state of the art particle physics experiment for the e... more The Alpha Magnetic Spectrometer (AMS) is a state of the art particle physics experiment for the extraterrestrial study of antimatter, matter and missing matter. AMS successfully completed the precursor STS91 Discovery flight (June 2nd-12th, 1998), completing 152 orbits at 52 degrees of latitude and about 400 km of height, collecting more than 100 million CR events. In this paper we report on the first flight experience and we present preliminary results on the search for nuclear antimatter. No antimatter nuclei with Z>=2 were detected. We obtain a model dependent upper limit on the anti-He /He flux 2, improving the results of previous published searches performed with stratospheric balloons.
Exp. Astron. 19 (2021), 2021
Multimessenger astrophysics is based on the detection, with the highest possible accuracy, of the... more Multimessenger astrophysics is based on the detection, with the highest possible accuracy, of the cosmic radiation. During the last 20 years, the advent space-borne magnetic spectrometers in space (AMS-01, Pamela, AMS-02), able to measure the charged cosmic radiation separating matter from antimatter, and to provide accurate measurement of the rarest components of Cosmic Rays (CRs) to the highest possible energies, have become possible, together with the ultra-precise measurement of ordinary CRs. These developments started the era of precision Cosmic Ray physics providing access to a rich program of high-energy astrophysics addressing fundamental questions like matter-antimatter asymmetry, indirect detection for Dark Matter and the detailed study of origin, acceleration and propagation of CRs and their interactions with the interstellar medium. In this paper we address the above-mentioned scientific questions, in the context of a second generation, large acceptance, superconducting ...
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 1998
Physics Letters B, 2000
v , V. Plyaskin ab , V. Pojidaev ab , 0370-2693r00r$ -see front matter q 2000 Elsevier Science B.... more v , V. Plyaskin ab , V. Pojidaev ab , 0370-2693r00r$ -see front matter q 2000 Elsevier Science B.V. All rights reserved.
Nuclear Physics B-Proceedings Supplements, 2007
AMS-02 is a space borne magnetic spectrometer designed to measure with accuracies up to one part ... more AMS-02 is a space borne magnetic spectrometer designed to measure with accuracies up to one part in 10 9 the composition of Cosmic Rays near Earth. With a large acceptance ( View the MathML source sr), an intense magnetic field from a superconducting magnet (0.7 T) ...
Physical Review Special …, 2008
This paper presents a detailed study of the deflection phenomena of a 400 GeV=c proton beam impin... more This paper presents a detailed study of the deflection phenomena of a 400 GeV=c proton beam impinging on a new generation of bent silicon crystals; the tests have been performed at the CERN Super Proton Synchrotron H8 beam line. Channeling and volume reflection angles are measured with an extremely precise goniometer and with high resolution silicon microstrip detectors. Volume reflection has been observed and measured for the first time at this energy, with a single-pass efficiency as large as 98%, in good agreement with the simulation results. This efficiency makes volume reflection a possible candidate for collimation with bent crystals at the CERN Large Hadron Collider.
IEEE Transactions on Nuclear Science, 2006
Silicon Photomultipliers (SiPMs) with quantum efficiency maximized for a wavelength between 420 a... more Silicon Photomultipliers (SiPMs) with quantum efficiency maximized for a wavelength between 420 and 470 nm have been developed at ITC-irst Trento (Italy), and are being tested for their application in the construction of a ultra high resolution small animal PET tomograph. The devices have an area of 1 mm x 1 mm and 625 microcells. The breakdown voltage is around 30 V, and the gain of the order of 10 6 . The intrinsic timing resolution is 70 ps rms at the single photoelectron level. The first tests as readout for scintillators show an energy resolution of 21% FWHM with Na-22 employing LSO crystals. The first matrices of SiPMs have been produced and are being tested.
Physics Reports-review Section of Physics Letters, 2002
The Alpha Magnetic Spectrometer (AMS) was own on the space shuttle Discovery during ight STS-91 (... more The Alpha Magnetic Spectrometer (AMS) was own on the space shuttle Discovery during ight STS-91 (June 1998) in a 51:7
Physics Letters B, 2000
The proton spectrum in the kinetic energy range 0.1 to 200 GeV was measured by the Alpha Magnetic... more The proton spectrum in the kinetic energy range 0.1 to 200 GeV was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at an altitude of 380 km. Above the geomagnetic cutoff the observed spectrum is parameterized by a power law. Below the geomagnetic cutoff a substantial second spectrum was observed concentrated at equatorial latitudes with a flux ∼70 m −2 sec −1 sr −1 . Most of these second spectrum protons follow a complicated trajectory and originate from a restricted geographic region.
IEEE Transactions on Nuclear Science, 2007
This paper reports on the electrical characterization of the first prototypes of Geiger-Mode Aval... more This paper reports on the electrical characterization of the first prototypes of Geiger-Mode Avalanche Photodiodes (GM-APDs) and Silicon Photomultipliers (SiPMs) produced at ITC-irst, Trento. Both static and functional measurements have been performed in dark condition. The static tests, consisting in reverse and forward IV measurements, have been performed on 20 GM-APDs and 90 SiPMs. The breakdown voltage, the quenching resistance value and the current level have been proved to be very uniform. On the other hand, the analysis of the dark signals allowed the extraction of important properties such as the dark count rate, the gain, the after-pulse and optical cross-talk (in case of the SiPMs) rates. These parameters have been evaluated as a function of the bias voltage, showing trends perfectly compatible with the theory of the device.
Physical Review Letters, 2007
The volume reflection phenomenon was detected while investigating 400 GeV proton interactions wit... more The volume reflection phenomenon was detected while investigating 400 GeV proton interactions with bent silicon crystals in the external beam H8 of the CERN Super Proton Synchrotron. Such a process was observed for a wide interval of crystal orientations relative to the beam axis, and its efficiency exceeds 95%, thereby surpassing any previously observed value. These observations suggest new perspectives for the manipulation of high-energy beams, e.g., for collimation and extraction in new-generation hadron colliders, such as the CERN Large Hadron Collider.