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Wyszukujesz frazę "Griffith, W. C." wg kryterium: Autor


Tytuł:
Search for ultralight axion dark matter in a side-band analysis of a $^{199}$Hg free-spin precession signal
Autorzy:
Lefort, T.
Piegsa, F. M.
Wursten, E.
Daum, M.
Dechenaux, B.
Rawlik, M.
Kirch, K.
Severijns, N.
Rozpędzik, Dagmara
Pignol, Guillaume
Schmidt-Wellenburg, Philipp
Flaux, P.
Ban, G.
Harris, P. G.
Kermaidic, Y.
Emmenegger, S.
Zejma, Jacek
Bondar, V.
Bison, G.
Roccia, Stephanie
Ries, D.
Komposch, S.
Thorne, J. A.
Ayres, N. J.
Griffith, W. C.
MohanMurthy, Prajwal
Naviliat Cuncic, Oscar
Bodek, Kazimierz
Lauss, B.
Abel, C.
Koss, P. A.
Stadnik, Y. V.
Zsigmond, Geza
Pais, D.
Crawford, C. B.
Chanel, E.
Weis, A.
Krempel, J.
Opis:
Ultra-low-mass axions are a viable dark matter candidate and may form a coherently oscillating classical field. Nuclear spins in experiments on Earth might couple to this oscillating axion dark-matter field, when propagating on Earth's trajectory through our Galaxy. This spin coupling resembles an oscillating pseudo-magnetic field which modulates the spin precession of nuclear spins. Here we report on the null result of a demonstration experiment searching for a frequency modulation of the free spin-precession signal of $^{199}$Hg in a 1 $\mu$T magnetic field. Our search covers the axion mass range 10$^{-16}$ eV $\lesssim$ m$_{a} \lesssim$ 10$^{-13}$ eV and achieves a peak sensitivity to the axion-nucleon coupling of g$_{aNN} \approx$ 3.5 $\times$ 10$^{-6}$ GeV$^{-1}$.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
The very large n2EDM magnetically shielded room with an exceptional performance for fundamental physics measurements
Autorzy:
Emmenegger, S.
Kirch, K.
Doorenbos, C. B.
Harris, P. G.
Saenz-Arevalo, W.
Roccia, S.
Ries, D.
Pais, D.
Thorne, J.
Lefort, T.
Griffith, W. C.
Tavakoli Dinani, R.
Zsigmond, G.
Crawford, C. B.
Ban, G.
Piegsa, F. M.
Bison, G.
Bondar, V.
Fertl, M.
Krempel, J.
Rienäcker, I.
Schnabel, A.
Zejma, Jacek
Lauss, B.
Schmidt-Wellenburg, P.
Fratangelo, A.
Pignol, G.
Chanel, E.
Ayres, N. J.
Shen, B.
Svirina, K.
Rozpędzik, Dagmara
Bodek, Kazimierz
Clement, B.
Rebreyend, D.
Staab, M.
Bouillaud, T.
Daum, M.
Chiu, P.-J.
Yazdandoost, N.
Rauscher, G.
Naviliat-Cuncic, O.
Severijns, N.
Grujic, Z. D.
Opis:
We present the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute, which features an interior cubic volume with each side of length 2.92 m, thus providing an accessible space of 25 m$^{3}$. The MSR has 87 openings of diameter up to 220 mm for operating the experimental apparatus inside and an intermediate space between the layers for housing sensitive signal processing electronics. The characterization measurements show a remanent magnetic field in the central 1 m$^{3}$ below 100 pT and a field below 600 pT in the entire inner volume, up to 4 cm to the walls. The quasi-static shielding factor at 0.01 Hz measured with a sinusoidal 2$\mu$T peak-to-peak signal is about 100 000 in all three spatial directions and increases rapidly with frequency to reach 10$^{8}$ above 1 Hz.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
The n2EDM experiment at the Paul Scherrer Institute
Autorzy:
Emmenegger, S.
Kirch, K.
Crawford, C.
Roccia, S.
Ries, D.
Pais, D.
Thorne, J.
Lefort, T.
Griffith, W. C.
Ross, K.
Wursten, E.
Rawlik, M.
Leredde, A.
Zsigmond, G.
Ban, G.
Piegsa, F. M.
Bison, G.
Bondar, V.
Krempel, J.
Schnabel, A.
Zejma, Jacek
Lauss, B.
Schmidt-Wellenburg, P.
Flaux, P.
Mohanmurthy, P.
Kozela, A.
Pignol, G.
Chanel, E.
Ayres, N. J.
Ferraris-Bouchez, L.
Rozpędzik, Dagmara
Virot, R.
Bodek, Kazimierz
Clement, B.
Weis, A.
Rebreyend, D.
Grujić, Z. D.
Koss, P. A.
Daum, M.
Lemière, Y.
Chiu, P.-J.
Harris, P. G.
Heil, W.
Voigt, J.
Abel, C.
Naviliat-Cuncic, O.
Severijns, N.
Hild, N.
Opis:
We present the new spectrometer for the neutron electric dipole moment (nEDM) search at the Paul Scherrer Institute (PSI), called n2EDM. The setup is at room temperature in vacuum using ultracold neutrons. n2EDM features a large UCN double storage chamber design with neutron transport adapted to the PSI UCN source. The design builds on experience gained from the previous apparatus operated at PSI until 2017. An order of magnitude increase in sensitivity is calculated for the new baseline setup based on scalable results from the previous apparatus, and the UCN source performance achieved in 2016.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne

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