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    Wyświetlanie 1-10 z 10
    Tytuł:
    Development of electron detectors for the BRAND experiment
    Autorzy:
    Łojek, Konrad
    Gupta, Ghnashyam
    Young, A.R.
    Zejma, Jacek
    Bhalerao, Shantanu
    Przygodzka, Zuzanna
    Hegde, Prateek
    Severijns, N.
    De Keukeleere, L.
    Rozpędzik, Dagmara
    Soldner, T.
    Ries, D.
    Bodek, Kazimierz
    Opis:
    The BRAND experiment employs detectors that utilize gas ionization and plastic scintillators, integrated with custom-designed front-end electronics, aimed at measuring the correlation coefficients in neutron beta decay. This article focuses on the characterization and performance of a newly developed electron detector prototype featuring custom-designed front-end electronics. The characterization results indicate an weak gain dependency of the scintillator when exposed to a radioactive source, varying along its length and width.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    Search for beyond standard model physics in free neutron decay
    Autorzy:
    Yazdandoost, N.
    Ries, D.
    Dhanmeher, K.
    Gupta, Ghnashyam
    DeKeukeleere, L.
    Włoch, B.
    Pysz, K.
    Engler, M.
    Kozela, A.
    Bodek, Kazimierz
    Choi, J.
    Łojek, Konrad
    Rozpędzik, Dagmara
    Zejma, Jacek
    Severijns, N.
    Young, A. R.
    Soldner, T.
    Opis:
    Applying a Mott polarimetry for measurement of the transverse polarization components of electrons from free neutron decay as well as proton momentum reconstruction using the combination of the time of flight method and the kinematical constrains of this three body decay, one gets access to eleven correlation coefficients of the neutron β-decay. Successful measurement of some of these coefficients would allow for an unique access to exotic scalar and tensor couplings of weak interactions and obtaining new constraints on their imaginary part, known with much worse accuracy. Results of the performance studies of some key experimental components of the prototype setup performed during the test run in 2021 at ILL PF1B neutron beam line are presented.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    BRAND – exploring transverse polarization of electrons emitted in neutron decay : feasibility demonstration experiment
    Autorzy:
    Łojek, Konrad
    Gupta, Ghnashyam
    Zejma, Jacek
    Yazdandoost, N.
    Kozela, A.
    Pysz, K.
    Young, A. R.
    Dhanmeher, K.
    Engler, M.
    Severijns, N.
    Choi, J.
    De Keukeleere, L.
    Rozpędzik, Dagmara
    Soldner, T.
    Ries, D.
    Bodek, Kazimierz
    Opis:
    Neutron and nuclear beta decay correlation coefficients are sensitive to the exotic scalar and tensor interactions that are not included in the Standard Model (SM). The proposed experiment BRAND will measure simultaneously seven neutron correlation coefficients: H, L, N, R, S, U and V that depend on the transverse electron polarization – a quantity which vanishes in the SM. Five of these correlations: H, L, S, U and V were never attempted experimentally before. The expected impact of the proposed experiment is comparable to that of frequently measured "traditional" correlation coefficients (a, b, A, B, D) but offers completely different systematics and additional sensitivity to imaginary parts of the scalar and tensor couplings. In order to demonstrate the feasibility of the challenging techniques such as the event-by-event decay kinematics reconstruction together with the electron polarimetry a test setup was installed at the cold neutron beam line PF1B at the Laue-Langevin Institute, Grenoble, France. In this contribution, the results of the first run as well as plans for the run in Autumn 2021 will be discussed.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    Search for BSM physics with neutron beta decay in the BRAND project
    Autorzy:
    Bodek, Kazimierz
    Choi, J.
    Dhanmeher, K.
    Pysz, K.
    Zejma, Jacek
    Łojek, Konrad
    Gupta, Ghnashyam
    Kozela, A.
    Engler, M.
    Young, A. R.
    Yazdandoost, N.
    Ries, D.
    Severijns, N.
    Rozpędzik, Dagmara
    De Keukeleere, L.
    Soldner, T.
    Opis:
    Neutron and nuclear beta decay correlation coefficients are sensitive to the exotic scalar and tensor interactions hypotheses that are beyond the Standard Model (BSM). The BRAND project aims at a test of the Lorentz structure of weak interaction in neutron decay by precision measurements of yet unexplored transverse polarization of electrons in correlation with the neutron spin and electron and recoil proton momenta. The experiment will simultaneously measure eleven neutron correlation coefficients (a, A, B, D, H, L, N, R, S, U, V), where seven of them (H, L, N, R, S, U and V) depend on the transverse electron polarization. Five of these correlations: H, L, S, U and V were never attempted experimentally before. The expected ultimate sensitivity of the proposed experiment with respect to BSM couplings will be comparable to that of the ongoing and planned correlation measurements in neutron and nuclear beta decays but offers completely different systematics and additional sensitivity to imaginary parts of the scalar and tensor couplings. An overview of the project, physical motivation and applied experimental techniques were reported. The results of the first pilot run of the experiment performed recently using the cold neutron beam line PF1B at the Laue-Langevin Institute, Grenoble, France were presented, with an emphasis on the challenges of the proposed proton detection technique.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    Mott polarimeter for electrons from neutron decay in BRAND experiment
    Autorzy:
    Bodek, Kazimierz
    Dhanmeher, K.
    Choi, J.
    Pysz, K.
    Zejma, Jacek
    Łojek, Konrad
    Gupta, Ghnashyam
    Kozela, A.
    Rozpędzik, Dagmara
    Engler, M.
    Young, A. R.
    Yazdandoost, N.
    Ries, D.
    Severijns, N.
    De Keukeleere, L.
    Soldner, T.
    Opis:
    The BRAND experiment aims at the search of Beyond Standard Model (BSM) physics via measurement of exotic components of week interaction. For this purpose the eleven correlation coefficients of the neutron β decay will be measured simultaneously. Seven of them: H, L, N, R, S, U and V, are sensitive to the transverse polarization of electrons from free neutron decay. The correlation coefficients will be derived using Mott polarimetry and completely determined kinematics of products from the polarized neutron β decay. For this aim the beam of cold polarized neutrons available at the PF1B facility of the ILL, Grenoble will be utilized. The electron detection system features both the tracking and energy measurement capability as well as the Mott polarimetry for determination of the electron spin orientation. The 3D tracking is performed with the use of low density, helium based drift chamber with hexagonal cell structure which is optimised for β-particles. The Mott polarimeter is an integral part of the tacker. It consists of a thin Pb foil installed inside the drift chamber and two plastic scitillators, providing trigger and scattered electron energy measurement. The results of the first pilot run of the BRAND experiment performed in September'20 are reported with the emphasis on the description and the performance of the electron detection system and the Mott polarimeter.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Autorzy:
    Lindroos, M.
    Zerzion, D.
    Bouquerel, E.
    Johansson, H.T.
    Wurtz, J.
    Markaj, G.
    Poussot, P.
    Klinkby, E.
    Zimmer, O.
    Dunne, K.
    Saiang, D.
    Vankova-Kirilova, G.
    Topaksu, A. Kayis
    Cupiał, P.
    Johansson, R.
    Gomez-Cadenas, J.J.
    Dracos, M.
    Gålnander, B.
    Cirigliano, V.
    Heil, P.
    Kolevatov, R.
    Barron-Pálos, L.
    Geralis, Th.
    Monrabal, F.
    Barrow, J.
    Johansson, T.
    Halić, L.
    Brooijmans, G.
    Alekou, A.
    Danared, H.
    Herde, H.
    Kliček, B.
    Fierlinger, P.
    Martins, C.
    Rataj, B.
    Kildetoft, B.
    Krhač, K.
    Bodek, Kazimierz
    Rozpędzik, Dagmara
    Tarkeshian, R.
    Larizgoitia, L.
    Fynbo, H.O.U.
    Konrad, G.
    Blanco, C.
    Efthymiopoulos, I.
    Marrelli, C.
    Eklund, L.
    Di Julio, D.D.
    Algora, A.
    Piegsa, F.M.
    Wagner, R.
    Holl, M.
    Kozioł, M.
    Snow, W.M.
    D’Alessi, L.
    Kirch, K.
    Oglakci, M.
    Frank, A.
    Broussard, L.J.
    Eshraqi, M.
    Milstead, D.
    Schober, H.
    Nesvizhevsky, V.
    Lychagin, E.
    Theroine, C.
    Bentley, P.
    Thorne, J.
    Trachanas, E.
    Fukuda, T.
    Soldner, T.
    Degenkolb, S.
    Buchan, O.
    Yiu, S.C.
    Tolba, T.
    Fertl, M.
    Uggerhøj, U.I.
    Carlile, C.J.
    Delahaye, J.P.
    Märkisch, B.
    Bohm, C.
    Zanini, L.
    Lewis, C.M.
    Burgman, A.
    Park, J.
    Perrey, H.
    Takibayev, A.
    Abele, H.
    Zormpa, O.
    Chanel, E.
    Petkov, G.
    Christiansen, P.
    Simón, A.
    Milas, N.
    Baeßler, S.
    Schmidt, U.
    Silverstein, S.
    Szybiński, B.
    Kupść, A.
    Lytken, E.
    Bijnens, J.
    Ekelöf, T.
    Kamyshkov, Y.
    Olvegård, M.
    Mezzetto, M.
    Santoro, V.
    Cederkall, J.
    Collar, J.I.
    Łacny, Ł.
    Oskarsson, A.
    Happe, C.
    Schulthess, I.
    Morales, E. Cristaldo
    Snamina, J.
    Muhrer, G.
    Ries, D.
    Gonzalez, F.
    de André, J.P.A.M.
    Novella, P.
    Fernandez-Martinez, E.
    Nepomuceno, A.
    Nilsson, T.
    Tsenov, R.
    Fanourakis, G.
    Gazis, N.
    Thomas, J.
    Friman-Gayer, U.
    Zejma, Jacek
    Andersen, K.
    Patrzalek, D.
    Gonzalez-Alonso, M.
    Fratangelo, A.
    Torres-Sánchez, P.
    Tang, Z.
    Collins, M.
    Baussan, E.
    Rizzi, N.
    Yoon, S.G.
    Wildner, E.
    Sosa, A. Garcia
    Farricker, A.
    Young, A.R.
    Damian, J.I. M.
    Rosauro-Alcaraz, S.
    Stavropoulos, G.
    Jericha, E.
    Dancila, D.
    Berezhiani, Z.
    Ota, T.
    Marciniewski, P.
    Jenke, T.
    Ohlsson, T.
    Bianchi, A.
    Gokbulut, G.
    Crawford, C.B.
    Bhattacharyya, A.K.
    Ferreira, M.J.
    Pistillo, C.
    Wolke, M.
    Zou, Y.
    Kraljevic, N. Blaskovic
    Ghosh, M.
    Vassilopoulos, N.
    Sina, H.
    Heinz, A.
    Wang, X.
    Privitera, P.
    Folsom, B.
    Calén, H.
    Esteban, I.
    Jenssen, M.
    Bolling, B.
    Bogomilov, M.
    Stipčević, M.
    Beßler, Y.
    Meirose, B.
    Terranova, F.
    Persoz, M.
    Blennow, M.
    Maiano, C.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-10 z 10

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