Investigation of silicon sensors for their use as antiproton annihilation detectors

Pacifico, N; Aghion, S.; Ahlén, O.; Belov, A. S.; Bonomi, G.; Bräunig, P.; Bremer, J.; Brusa, Roberto Sennen; Burghart, G.; Cabaret, L.; Caccia, M.; Canali, C.; Caravita, R.; Castelli, F.; Cerchiari, G.; Cialdi, S.; Comparat, D.; Consolati, G.; Da Vià, C.; Derking, J. H.; Di Domizio, S.; Di Noto, L.; Doser, M.; Dudarev, A.; Ferragut, R.; Fontana, A.; Genova, P.; Giammarchi, M.; Gligorova, A.; Gninenko, S. N.; Haider, S.; Harasimowicz, J.; Huse, T.; Jordan, E.; Jørgensen, L. V.; Kaltenbacher, T.; Kellerbauer, A.; Knecht, A.; Krasnický, D.; Lagomarsino, V.; Lehner, S.; Magnani, A.; Malbrunot, C.; Mariazzi, S.; Matveev, V. A.; Moia, F.; Nebbia, G.; Nellist, C.; Nédélec, P.; Oberthaler, M. K.; Petráček, V.; Prelz, F.; Prevedelli, M.; Regenfus, C.; Riccardi, C.; Røhne, O.; Rotondi, A.; Sandaker, H.; Sosa, A.; Subieta Vasquez, M. A.; Špaček, M.; Testera, G.; Welsch, C. P.; Widmann, E.; Yzombard, P.; Zavatarelli, S.; Zmeskal, J.

doi:10.1016/j.nima.2014.06.036

We present here a new application of silicon sensors aimed at the direct detection of arainucleons annihilations taking place inside the sensor's volume. Such detectors are interesting particularly for the measurement of antimatter properties and will be used as part of the gravity measurement module in the AET1S experiment at the CERN Antiproton Decelerator. One of the goals of the AETIS experiment is to measure the gravitational acceleration of araihydrogen with 1% precision. Three different silicon sensor geometries have been tested with an antiproton beam to investigate their properties as annihilation detection devices: strip planar, 3D pixels and monolithic pixel planar. In all cases we were successfully detecting annihilations taking place in the sensor and we were able to make a first characterization of the clusters and tracks.

Investigation of silicon sensors for their use as antiproton annihilation detectors / Pacifico, N; Aghion, S.; Ahlén, O.; Belov, A. S.; Bonomi, G.; Bräunig, P.; Bremer, J.; Brusa, Roberto Sennen; Burghart, G.; Cabaret, L.; Caccia, M.; Canali, C.; Caravita, R.; Castelli, F.; Cerchiari, G.; Cialdi, S.; Comparat, D.; Consolati, G.; Da Vià, C.; Derking, J. H.; Di Domizio, S.; Di Noto, L.; Doser, M.; Dudarev, A.; Ferragut, R.; Fontana, A.; Genova, P.; Giammarchi, M.; Gligorova, A.; Gninenko, S. N.; Haider, S.; Harasimowicz, J.; Huse, T.; Jordan, E.; Jørgensen, L. V.; Kaltenbacher, T.; Kellerbauer, A.; Knecht, A.; Krasnický, D.; Lagomarsino, V.; Lehner, S.; Magnani, A.; Malbrunot, C.; Mariazzi, S.; Matveev, V. A.; Moia, F.; Nebbia, G.; Nellist, C.; Nédélec, P.; Oberthaler, M. K.; Petráček, V.; Prelz, F.; Prevedelli, M.; Regenfus, C.; Riccardi, C.; Røhne, O.; Rotondi, A.; Sandaker, H.; Sosa, A.; Subieta Vasquez, M. A.; Špaček, M.; Testera, G.; Welsch, C. P.; Widmann, E.; Yzombard, P.; Zavatarelli, S.; Zmeskal, J.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 765:(2014), pp. 161-166. [10.1016/j.nima.2014.06.036]