Search

Your search keyword '"Grimani, C."' showing total 72 results
Start Over Author "Grimani, C." Search Limiters Peer Reviewed
72 results on '"Grimani, C."'

2. In-flight testing of the injection of the LISA Pathfinder test mass into a geodesic

Author

Bortoluzzi, D., Vignotto, D., Zambotti, A., Armano, M., Audley, H., Baird, J., Binetruy, P., Born, M., Castelli, E., Cavalleri, A., Cesarini, A., Cruise, A.M., Danzmann, K., de Deus Silva, M., Diepholz, I., Dixon, G., Dolesi, R., Ferraioli, L., Ferroni, V., Fitzsimons, E.D., Freschi, M., Gesa, L., Gibert, F., Giardini, D., Giusteri, R., Grimani, C., Grzymisch, J., Harrison, I., Hartig, M.-S., Heinzel, G., Hewitson, M., Hollington, D., Hoyland, D., Hueller, M., Inchauspé, H., Jennrich, O., Jetzer, P., Karnesis, N., Kaune, B., Korsakova, N., Killow, C.J., Lobo, J.A., Liu, L., López-Zaragoza, J.P., Maarschalkerweerd, R., Mance, D., Meshksar, N., Martín, V., Martin-Polo, L., Martino, J., Martin-Porqueras, F., McNamara, P.W., Mendes, J., Mendes, L., Nofrarias, M., Paczkowski, S., Perreur-Lloyd, M., Petiteau, A., Pivato, P., Plagnol, E., Ramos-Castro, J., Reiche, J., Robertson, D.I., Rivas, F., Russano, G., Slutsky, J., Sopuerta, C.F., Sumner, T., Texier, D., Thorpe, J.I., Vetrugno, D., Vitale, S., Wanner, G., Ward, H., Wass, P.J., Weber, W.J., Wissel, L., Wittchen, A., Zweifel, P., and Zanoni, Carlo

Published
2021
Full Text
View/download PDF

3. Measuring the Galactic Cosmic Ray flux with the LISA Pathfinder radiation monitor

Author

Armano, M., Audley, H., Baird, J., Binetruy, P., Born, M., Bortoluzzi, D., Castelli, E., Cavalleri, A., Cesarini, A., Cruise, A.M., Danzmann, K., de Deus Silva, M., Diepholz, I., Dixon, G., Dolesi, R., Ferraioli, L., Ferroni, V., Finetti, N., Fitzsimons, E.D., Freschi, M., Gesa, L., Gibert, F., Giardini, D., Giusteri, R., Grimani, C., Grzymisch, J., Harrison, I., Heinzel, G., Hewitson, M., Hollington, D., Hoyland, D., Hueller, M., Inchauspé, H., Jennrich, O., Jetzer, P., Karnesis, N., Kaune, B., Korsakova, N., Killow, C.J., Lobo, J.A., Lloro, I., Liu, L., Lopez-Zaragoza, J.P., Maarschalkerweerd, R., Mance, D., Meshskar, N., Martín, V., Martin-Polo, L., Martino, J., Martin-Porqueras, F., Mateos, I., McNamara, P.W., Mendes, J., Mendes, L., Nofrarias, M., Paczkowski, S., Perreur-Lloyd, M., Petiteau, A., Pivato, P., Plagnol, E., Ramos-Castro, J., Reiche, J., Robertson, D.I., Rivas, F., Russano, G., Slutsky, J., Sopuerta, C.F., Sumner, T., Texier, D., Thorpe, J.I., Vetrugno, D., Vitale, S., Wanner, G., Ward, H., Wass, P., Weber, W.J., Wissel, L., Wittchen, A., and Zweifel, P.

Published
2018
Full Text
View/download PDF

4. Interplanetarymedium monitoring with LISA: Lessons from LISA Pathfinder

Author

Cesarini A., Grimani C., Benella S., Fabi M., Sabbatini F., Villani M., and Telloni D.

Subjects
gravitational wave interferometers, magnetometers, interplanetary magnetic field, galactic cosmic rays, Meteorology. Climatology, QC851-999
Abstract

The Laser Interferometer Space Antenna (LISA) of the European Space Agency (ESA) will be the first low-frequency gravitational-wave observatory orbiting the Sun at 1 AU. The LISA Pathfinder (LPF) mission, aiming at testing the instruments to be located on board the LISA spacecraft (S/C), hosted, among the others, fluxgate magnetometers and a particle detector as parts of a diagnostics subsystem. These instruments allowed us to estimate the magnetic and Coulomb spurious forces acting on the test masses that constitute the mirrors of the interferometer. With these instruments, we also had the possibility to study the galactic cosmic-ray short term-term variations as a function of the particle energy and the associated interplanetary disturbances. Platform magnetometers and particle detectors will also be placed on board each LISA S/C. This work reports on an empirical method that allowed us to disentangle the interplanetary and onboard-generated components of the magnetic field by using the LPF magnetometer measurements. Moreover, we estimate the number and fluence of solar energetic particle events expected to be observed with the ESA Next Generation Radiation Monitor during the mission lifetime. An additional cosmic-ray detector, similar to that designed for LPF, in combination with magnetometers, would permit to observe the evolution of recurrent and non-recurrent galactic cosmic-ray variations and associated increases of the Interplanetary Magnetic Field at the transit of high-speed solar wind streams and interplanetary counterparts of coronal mass ejections. The diagnostics subsystem of LISA makes this mission also a natural multi-point observatory for space weather science investigations.

Published
2022
Full Text
View/download PDF

5. Particle monitoring capability of the Solar Orbiter Metis coronagraph through the increasing phase of solar cycle 25.

Author

Grimani, C., Andretta, V., Antonucci, E., Chioetto, P., Da Deppo, V., Fabi, M., Gissot, S., Jerse, G., Messerotti, M., Naletto, G., Pancrazzi, M., Persici, A., Plainaki, C., Romoli, M., Sabbatini, F., Spadaro, D., Stangalini, M., Telloni, D., Teriaca, L., and Uslenghi, M.

Subjects
*SOLAR energetic particles, *GALACTIC cosmic rays, *COSMIC rays, *CORONAL mass ejections, *SOLAR activity, *MONTE Carlo method, *SOLAR cycle
Abstract

Context. Galactic cosmic rays (GCRs) and solar particles with energies greater than tens of MeV penetrate spacecraft and instruments hosted aboard space missions. The Solar Orbiter Metis coronagraph is aimed at observing the solar corona in both visible (VL) and ultraviolet (UV) light. Particle tracks are observed in the Metis images of the corona. An algorithm has been implemented in the Metis processing electronics to detect the VL image pixels crossed by cosmic rays. This algorithm was initially enabled for the VL instrument only, since the process of separating the particle tracks in the UV images has proven to be very challenging. Aims. We study the impact of the overall bulk of particles of galactic and solar origin on the Metis coronagraph images. We discuss the effects of the increasing solar activity after the Solar Orbiter mission launch on the secondary particle production in the spacecraft. Methods. We compared Monte Carlo simulations of GCRs crossing or interacting in the Metis VL CMOS sensor to observations gathered in 2020 and 2022. We also evaluated the impact of solar energetic particle events of different intensities on the Metis images. Results. The study of the role of abundant and rare cosmic rays in firing pixels in the Metis VL images of the corona allows us to estimate the efficiency of the algorithm applied for cosmic-ray track removal from the images and to demonstrate that the instrument performance had remained unchanged during the first two years of the Solar Orbiter operations. The outcome of this work can be used to estimate the Solar Orbiter instrument's deep charging and the order of magnitude for energetic particles crossing the images of Metis and other instruments such as STIX and EUI. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

14. Readout architecture of a highly segmented silicon calorimeter operating in space

Author

Brunetti, M.T., Codino, A., Federico, C., Giacomucci, A., Grimani, C., Menichelli, M., Minelli, G., Miozza, M., Salvatori, I., and De Bortoli, L.

Subjects
Calorimeters -- Research, Business, Electronics, Electronics and electrical industries
Abstract

We present the design of a readout system for a silicon calorimeter with 12800 readout channels, to be operated on satellite or balloon-borne experiments for cosmic antiproton and antihelium search. A prototype of the calorimeter digital readout system has been designed and constructed. It may be subdivided into two main parts: the storage modules and the controller. Performance tests of the prototype at the acquisition rate of 8 MHz result in a very limited power consumption, amounting to 0.1 mW per channel for the Storage Modules and 0.5 W for the controller. The acquisition rate can be further enhanced by simple modifications of the transmission protocol between the storage modules and the controller. This readout system can be easily adapted to other detectors to be operated on space vehicles. An enhanced version of this prototype is presently used in a [Gamma] spectroscopy balloon-borne experiment.

Published
1994

15. Measurements of primary cosmic-ray hydrogen and helium by the WiZard collaboration

Author

Circella, M., Ambriola, M., Barbiellini, G., Bartalucci, S., Bellotti, R., Bergström, D., Bidoli, V., Boezio, M., Bonvicini, V., Bravar, U., Cafagna, F., Carlson, P., Casolino, M., Ciacio, F., De Marzo, C., De Pascale, M.P., Finetti, N., Francke, T., Grimani, C., Grinstein, S., Hof, M., Kremer, J., Menn, W., Mitchell, J.W., Morselli, A., Ormes, J.F., Papini, P., Piccardi, S., Picozza, P., Ricci, M., Schiavon, P., Simon, M., Sparvoli, R., Spillantini, P., Stephens, S.A., Stochaj, S.J., Streitmatter, R.E., Suffert, M., Vacchi, A., Weber, N., and Zampa, N.

Published
2001
Full Text
View/download PDF

16. Measurements of cosmic-ray electrons and positrons by the Wizard/CAPRICE collaboration

Author

Boezio, M., Barbiellini, G., Bonvicini, V., Schiavon, P., Vacchi, A., Zampa, N., Bergström, D., Carlson, P., Francke, T., Grinstein, S., Weber, N., Suffert, M., Hof, M., Kremer, J., Menn, W., Simon, M., Stephens, S.A., Ambriola, M., Bellotti, R., Cafagna, F.S., Ciacio, F., Circella, M., De Marzo, C., Finetti, N., Papini, P., Piccardi, S., Spillantini, P., Bartalucci, S., Ricci, M., Grimani, C., Casolino, M., De Pascale, M.P., Morselli, A., Picozza, P., Sparvoli, R., Mitchell, J.W., Ormes, J.F., Streitmatter, R.E., Bravar, U., and Stochaj, S.J.

Published
2001
Full Text
View/download PDF

21. LISA-PF radiation monitor performance during the evolution of SEP events for the monitoring of test-mass charging.

Author

Grimani, C, Ao, X, Fabi, M, Laurenza, M, Li, G, Lobo, A, Mateos, I, Storini, M, Verkhoglyadova, O, and Zank, G P

Subjects
*RADIATION measurements, *COSMIC rays, *GRAVITATIONAL wave detectors, *HELIOSPHERE, *INTERFEROMETERS, *DATA analysis
Abstract

Cosmic rays of solar and galactic origin at energies >100 MeV/n charge and induce spurious forces on free-floating test masses on board interferometers devoted to gravitational wave detection in space. LISA Pathfinder (LISA-PF), the technology testing mission for eLISA/NGO, will carry radiation monitors for on board test-mass charging monitoring. We present here the results of a simulation of radiation monitor performance during the evolution of solar energetic particle (SEP) events of different intensity. This simulation was carried out with the Fluka Monte Carlo package by taking into account for the first time both energy and spatial distributions of solar protons for the SEP events of 23 February 1956, 15 November 1960 and 7 May 1978. Input data for the Monte Carlo simulations was inferred from neutron monitor measurements. Conversely, for the SEP event of 13 December 2006 observed by the PAMELA experiment in space, we used the proton pitch angle distribution (PAD) computed from the Particle Acceleration and Transport in the Heliosphere (PATH) code. We plan to adopt this approach at the time of LISA-PF data analysis in order to optimize the correlation between radiation monitor observations and test-mass charging. The results of this work can be extended to the future space interferometers and other space missions carrying instruments for SEP detection. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
View/download PDF

22. Possible consequences of a disk around B0656+14 on e +–e − and near-1Hz gravitational wave production

Author

Grimani, C.

Subjects
*GRAVITATIONAL waves, *ASTRONOMICAL observations, *PULSARS, *COSMIC rays, *MAGNETOSPHERE, *POSITRONS, *MAGNETIC fields, *EARTH (Planet)
Abstract

Abstract: Nearby pulsars B0656+14 and Geminga were proposed in the literature as the main sources of cosmic-ray positrons observed near Earth above 10GeV. B0656+14 has comparable distance from Earth, similar magnetic field and period of Geminga. However, observations in the R and I bands indicate the presence of a disk of approximately 10−4 M ⊙ around B0656+14. Radio and pulsed γ-ray flux observations from this pulsar are also consistent with supernova fallback material and disk entering the light cylinder and partially quenching the development of electromagnetic showers in the magnetosphere. If this is the case, B0656+14 has unlikely given any contribution to e + and e − observed near Earth. Absolute flux measurements and the level of anisotropy in the high energy electron and positron arrival directions above 50GeV will help in revealing if none, one of both nearby pulsars are sources of these particles observed near Earth. Finally, the gravitational radiation emission that might arise from the possible B0656+14 disk precession and its detectability with future space interferometers are discussed. [Copyright &y& Elsevier]

Published
2013
Full Text
View/download PDF

24. On the role of radiation monitors on board LISA Pathfinder and future space interferometers.

Author

Grimani, C., Boatella, C., Chmeissani, M., Fabi, M., Finetti, N., Laurenza, M., Lobo, A., Mateos, I., and Storini, M.

Subjects
*RADIATION, *LASER interferometers, *SOLAR energetic particles, *GALACTIC cosmic rays, *SPECTROMETERS, *SPACE, *DETECTORS
Abstract

LISA (Laser Interferometer Space Antenna) and its precursor mission LISA Pathfinder (LISA-PF) will carry particle monitors for noise diagnostics. It was proposed to build and place radiation detectors on board the ASTROD missions as well.We present here a study of the solar energetic particle (SEP) events that the LISA-PF radiationmonitors are able to detect above the galactic cosmic-ray (GCR) background predicted at the time of the mission data taking in 2015. In order to optimize the correlation between radiation monitor measurements and gravitational sensor test-mass charging, the energy threshold for particles traversing both detectors should be approximately the same. In LISA-PF, the radiation monitor particle energy cut-off was conservatively set at 75 MeV per nucleon (MeV/n) for protons and ion normal incidence, while the minimum energy of the same particles reaching the test masses is 100 MeV/n. We find that SEP events detectable on LISA-PF are characterized by peak fluxes and fluences at energies>75 MeV/n larger than about 45%, on average, with respect to those at energies >100 MeV/n.We conclude that for an accurate correlation between radiation monitor count rates and test-mass charging, it is mandatory to benefit from absolute flux measurements of both galactic and high-energy solar particles provided by experiments carrying magnetic spectrometers in space at the time of LISA-PF (PAMELA, AMS). On the other hand, the role of the radiation detectors on board LISA-PF is crucial allowing for SEP event onset and dynamics monitoring. [ABSTRACT FROM AUTHOR]

Published
2012
Full Text
View/download PDF

25. Semi-analytical model of cosmic ray electron transport.

Author

Ivascenko, A., Spanier, F., Vainio, R., and Grimani, C.

Subjects
COSMIC rays, ELECTRON transport, SPECTRUM analysis, PARTICLES (Nuclear physics), ELECTRONS, INTERSTELLAR medium, COLLISIONS (Physics)
Abstract

We present a numerical extension to the analytical propagation model introduced in Hein and Spanier (2008) to describe the leptonic population in the galactic disc. The model is used to derive a possible identification of the components that contribute to the leptonic cosmic ray spectrum, as measured by PAMELA, Fermi and HESS, with an emphasis on secondary e+ - e- production in collisions of cosmic ray particles with ambient interstellar medium (ISM). We find that besides secondaries, an additional source symmetric in e+ - e- production is needed to explain both the PAMELA anomaly and the Fermi bump, assuming a power-law primary electron spectrum. Our model also allows us to derive constraints for some properties of the ISM. [ABSTRACT FROM AUTHOR]

Published
2011
Full Text
View/download PDF

28. Migration processes of 137Cs and 90Sr in compartments of a lake ecosystem.

Author

Desideri, D., Grimani, C., and Monte, L.

Subjects
*NUCLEAR accidents, *CESIUM, *STRONTIUM, *LAKES, *BIOTIC communities, *NUCLEAR weapons
Abstract

The dispersion of radioactive substances in the environment following nuclear weapon tests in atmosphere since 1954 and accidents to nuclear plants, like that in Chernobyl in 1986, have allowed us to study the migration processes of some radionuclides in complex ecosystems such as lakes are. In the present paper the behavior of 137Cs and 90Sr in different compartments of the Monterosi Lake (central Italy) was assessed. The 137Cs concentration was measured in lake water as well as sediment, stream water, aquatic plant and fish samples. 90Sr concentration in water and sediments was also determined. A total inventory of 4206±76 Bq . m-2 and 958±79 Bq . m-2 (on 27/6/01) has been found for 137Cs and 90Sr, respectively. The experimental data presented here allow to calibrate theoretical models predicting the temporal trend of radionuclide concentration in similar ecosystems. Moreover, information on cesium and strontium migration processes can be extended to other pollutants having similar environmental behavior. [ABSTRACT FROM AUTHOR]

Published
2005
Full Text
View/download PDF

30. Cosmic-ray spectra near the LISA orbit.

Author

Grimani, C., Vocca, H., Barone, M., Stanga, R., Vetrano, F., Viceré, A., Amico, P., Bosi, L., Marchesoni, F., Punturo, M., and Travasso, F.

Published
2004

36. Milli-Hertz Gravitational Waves: LISA and LISA PathFinder.

Author

Araújo, H., Cañizares, P., Chmeissani, M., Conchillo, A., Díaz-Aguiló, M., García-Berro, E., Gesa, L., Gibert, F., Grimani, C., Hajdas, W., Hollington, D., Lloro, I., Lobo, A., Mateos, I., Nofrarias, M., Puigdengoles, C., Ramos-Castro, J., Sanjuán, J., Sopuerta, CF, and Wass, P.

Published
2011
Full Text
View/download PDF

41. Ground based 2DoF test for LISA and LISA PF.

Author

Stanga, R., Marconi, L., Bagni, G., Grimani, C., Vetrano, F., Vicerè, A., Carbone, L., Cavalleri, A., Dolesi, R., Hueller, M., Vitale, S., Weber, W. J., Iafolla, V., Nozzoli, S., Santoli, F., and Pucacco, G.

Published
2006
Full Text
View/download PDF

42. SEP flux mapping with PHOEBUS.

Author

Grimani, C., Bagni, G., Fabi, M., Vicerè, A., Marconi, L., Stanga, R., Bosi, L., Vocca, H., Araújo, H., Shaul, D., Sumner, T., Wass, P., Boatella, C., Lobo, A., Chmeissani, M., and Martinez, I.

Published
2006
Full Text
View/download PDF

43. Identification of cosmic ray electrons and positrons by neural networks

Author

Aversa, F., Barbiellini, G., Basini, G., Bellotti, R., Bidoli, V., Bocciolini, M., Bravar, U., Boezio, M., Cafagna, F., Candusso, M., Casolino, M., Castellano, M., Circella, M., Colavita, A., De Cataldo, G., De Marzo, C., De Pascale, M.P., Finetti, N., Fratnik, F., Giglietto, N., Golden, R.L., Grimani, C., Hof, M., Marangelli, B., Massimo Brancaccio, F., Menn, W., Mitchell, J.W., Morselli, A., Papini, P., Perego, A., Piccardi, S., Picozza, P., Rainò, A., Ricci, M., Schiavon, P., Simon, M., Sparvoli, R., Spillantini, P., Spinelli, P., Stephens, S.A., Stochaj, S.J., Streitmatter, R.E., Vacchi, A., and Zampa, N.

Published
1996
Full Text
View/download PDF

44. Study of the combined particle identification capability of a transition radiation detector and a silicon imaging calorimeter during the TS93 balloon flight

Author

Bellotti, R., Cafagna, F., Castellano, M., Circella, M., De Cataldo, G., De Marzo, C., Giglietto, N., Marangelli, B., Rainò, A., Spinelli, P., Brancaccio, M., Grandi, M., Papini, P., Perego, A., Piccardi, S., Spillantini, P., Basini, G., Ricci, M., Codino, A., Finetti, N., Grimani, C., Bidoli, V., Candusso, M., Casolino, M., De Pascale, M.P., Morselli, A., Picozza, P., Sparvoli, R., Aversa, F., Barbiellini, G., Boezio, M., Colavita, A., Fratnik, F., Schiavon, P., Vacchi, A., Zampa, N., Mitchell, J.W., Streitmatter, R.E., Golden, R.L., Stochaj, S.J., Hof, M., Menn, W., Simon, M., and Stephens, S.A.

Published
1997
Full Text
View/download PDF

46. Performance of the CAPRICE RICH detector during the 1994 balloon flight

Author

Barbiellini, G, Basini, G, Bellotti, R, Bocciolini, M, Boezio, M, Massimo Brancaccio, F, Bravar, U, Cafagna, F, Candusso, M, Carlson, P, Casolino, M, Castellano, M, De Cataldo, G, Circella, M, Codino, A, Finetti, N, Francke, T, Giglietto, N, Golden, R.L, Grimani, C, Hof, M, Marangelli, B, De Marzo, C.N, Mitchell, J.W, Morselli, A, De Pascale, M.P, Papini, P, Perego, A, Piccardi, S, Picozza, P, Ricci, M, Schiavon, P, Simon, M, Sparvoli, R, Spillantini, P, Spinelli, P, Stephens, S.A, Stochaj, S.J, Streitmatter, R.E, Suffert, M, Vacchi, A, Weber, N, and Zampa, N

Published
1996
Full Text
View/download PDF

49. Performance of a balloon-borne magnet spectrometer for cosmic ray studies

Author

Golden, R.L., Grimani, C., Hull, R., Kimbell, B.L., Park, R., Stephens, S.A., Stochaj, S., Webber, W.R., Basini, G., Bonaviri, E., Massimo Brancaccio, F., Ricci, M., Ormes, J.F., Seo, E.S., Streitmatter, R.E., Celletti, F., Spillantini, P., Codino, A., Menichelli, M., Salvatori, I., Bongiorno, F., Bidoli, V., Buccheri, A., De Pascale, M.P., Morselli, A., and Picozza, P.

Published
1991
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results