F., Tobia, A., Trois, A., Uchiyama, K., Vimercati, M., Weisskopf, M. D., Rankin, J., Ratheesh, A., Rubini, A., Santoli, F., Sarra, P., Scalise, E., Sciortino, A., Soffitta, P., Tamagawa, T., Tennant, A.
L., Perri, M., Piazzolla, R., Pieraccini, S., Pilia, M., Puccetti, S., Ramsey, B. « less Publication Date: Research Org.: SLAC National Accelerator Lab., Menlo Park, CA (United States) Sponsoring Org.: USDOE Office of Science (SC), Basic Energy Sciences (BES) Italian Space Agency (ASI) Japan Society for the Promotion of Science (JSPS) Contributing Org.: IXPE Mission OSTI Identifier: 1869917 Grant/Contract Number: AC02-76SF00515 ASI-INAF-2017-12-H0 ASI-INFN-2017.13-H0 JP19H05609 Resource Type: Journal Article: Accepted Manuscript Journal Name: Astroparticle Physics Additional Journal Information: Journal Volume: 133 Journal ID: ISSN 0927-6505 Publisher: Elsevier Country of Publication: United States Language: English Subject: 79 ASTRONOMY AND ASTROPHYSICS x-ray polarimetry gas detectorsīaldini, L., Barbanera, M., Bellazzini, R., Bonino, R., Borotto, F., Brez, A., Caporale, C., Cardelli, C., Castellano, S., Ceccanti, M., Citraro, S., Di Lalla, N., Latronico, L., Lucchesi, L., Magazzù, C., Magazzù, G., Maldera, S., Manfreda, A., Marengo, M., Marrocchesi, A., Mereu, P., Minuti, M., Mosti, F., Nasimi, H., Nuti, A., Oppedisano, C., Orsini, L., Pesce-Rollins, M., Pinchera, M., Profeti, A., Sgrò, C., Spandre, G., Tardiola, M., Zanetti, D., Amici, F., Andersson, H., Attinà, P., Bachetti, M., Baumgartner, W., Brienza, D., Carpentiero, R., Castronuovo, M., Cavalli, L., Cavazzuti, E., Centrone, M., Costa, E., D’Alba, E., D’Amico, F., Del Monte, E., Di Cosimo, S., Di Marco, A., Di Persio, G., Donnarumma, I., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Kitaguchi, T., La Monaca, F., Lefevre, C., Loffredo, P., Lorenzi, P., Mangraviti, E., Matt, G., Meilahti, T., Morbidini, A., Muleri, F., Nakano, T., Negri, B., Nenonen, S., O’Dell, S. In addition, we shall discuss in detail a number of instrumental effects that are relevant for high-level science analysis-particularly as far as the response to unpolarized radiation and the stability in time are concerned. We shall present a thorough characterization of the GPDs in terms of effective noise, trigger efficiency, dead time, uniformity of response, and spectral and polarimetric performance. In this paper we shall review the design, manufacturing, and test of the IXPE focal-plane detectors, with particular emphasis on the connection between the science drivers, the performance metrics and the operational aspects. At the heart of the focal plane is a set of three polarization-sensitive Gas Pixel Detectors (GPD), each based on a custom ASIC acting as a charge-collecting anode. Due to be launched in late 2021, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Explorer mission designed to perform polarization measurements in the 2–8 keV band, complemented with imaging, spectroscopy and timing capabilities.
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