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We report on the measurement of neutron energy spectra at the newly established Yemi Underground Laboratory (Yemilab) in the Republic of Korea, designed to host dark matter and rare-event search experiments. A high-sensitivity neutron…

We propose to raise the critical temperature $T_c$ for superconductivity in doped C$_{60}$ molecular crystals by increasing the electronic density of states at the Fermi level $N(E_F)$ and thus the electron-phonon coupling constant in…

Superconductivity · Physics 2018-04-18 Dogan Erbahar , Dan Liu , Savas Berber , David Tomanek

Processes occurring in the strong-field regime of QED are characterized by background electromagnetic fields of the order of the critical field $F_{cr}=m^2c^3/\hbar|e|$ in the rest frame of participating charges. It has been conjectured…

High Energy Physics - Phenomenology · Physics 2020-02-05 A. Di Piazza , T. N. Wistisen , M. Tamburini , U. I. Uggerh\{o}j

An excellent candidate molecule for the measurement of the electron's electric dipole moment (eEDM) is thorium monofluoride (ThF$^+$) because the eEDM-sensitive state, $^3\Delta_1$, is the electronic ground state, and thus is immune to…

We report an ab initio calculation of the shielding of the nuclear magnetic moment by the bound electron in hydrogen-like ions. This investigation takes into account several effects that have not been calculated before (electron…

Atomic Physics · Physics 2015-06-04 V. A. Yerokhin , K. Pachucki , Z. Harman , C. H. Keitel

We describe the first precision measurement of the electron's electric dipole moment (eEDM, $d_e$) using trapped molecular ions, demonstrating the application of spin interrogation times over 700 ms to achieve high sensitivity and stringent…

ATLAS is a detector under construction to explore the physics at the Large Hadron Collider at CERN. It has a muon spectrometer with an excellent momentum resolution of 3-10%, provided by three layers of precision monitored-drift-tube…

Instrumentation and Detectors · Physics 2007-05-23 S. Horvat , O. Kortner , H. Kroha , A. Manz , S. Mohrdieck , V. Zhuravlov

The barrel section of the novel MIP Timing Detector (MTD) will be constructed as part of the upgrade of the CMS experiment to provide a time resolution for single charged tracks in the range of $30-60$ ps using LYSO:Ce crystal arrays read…

We report on the fabrication and use of deuterated polyethylene (dPE) as a coating material for ultra-cold neutron (UCN) storage and transport. The Fermi potential has been determined to be 214~neV and the wall loss coefficient $\eta$ is…

Data from the muon g-2 experiment at Brookhaven National Lab has been analyzed to search for a muon electric dipole moment(EDM), which would violate parity and time reversal symmetries. An EDM would cause a tilt in the spin precession plane…

High Energy Physics - Experiment · Physics 2007-05-23 Ronald McNabb

The resolution and efficiency of a precision drift-tube chamber for the ATLAS muon spectrometer with final read-out electronics was tested at the Gamma Irradiation Facility at CERN in a 100 GeV muon beam and at photon irradiation rates of…

Instrumentation and Detectors · Physics 2016-04-06 M. Deile , J. Dubbert , S. Horvat , O. Kortner , H. Kroha , A. Manz , S. Mohrdieck-Moeck , F. Rauscher , R. Richter , A. Staude , W. Stiller

i-TED consists of both a total energy detector and a Compton camera primarily intended for the measurement of neutron capture cross sections by means of the simultaneous combination of neutron time-of-flight (TOF) and $\gamma$-ray imaging…

Instrumentation and Detectors · Physics 2020-02-24 V. Babiano , J. Balibrea , L. Caballero , D. Calvo , I. Ladarescu , J. Lerendegui , S. Mira Prats , C. Domingo-Pardo

We calculate the electric dipole moment (EDM) for the neutron in the framework of the minimal 3-3-1 model. We assume that the only source of $CP$ violation arises from a complex trilinear coupling constant and two complex vacuum expectation…

High Energy Physics - Phenomenology · Physics 2016-09-07 G. De Conto , V. Pleitez

A new type of cold/ultracold neutron detector that can realize a spatial resolution of less than 100 nm was developed using nuclear emulsion. The detector consists of a fine-grained nuclear emulsion coating and a 50-nm thick $^{10}$B$_4$C…

Instrumentation and Detectors · Physics 2018-12-05 N. Naganawa , T. Ariga , S. Awano , M. Hino , K. Hirota , H. Kawahara , M. Kitaguchi , K. Mishima , H. M. Shimizu , S. Tada , S. Tasaki , A. Umemoto

The detection of an electron bunch exiting a strong magnetic field can prove challenging due to the small mass of the electron. If placed too far from a solenoid's entrance, a detector outside the magnetic field will be too small to…

A system for collecting the scintillation light produced by the capture process of ultra-cold neutrons (UCN) on polarized $^{3}$He is discussed and results from simulations of its performance are presented. This system will be implemented…

Nuclear Experiment · Physics 2022-05-04 D. A. Loomis , V. Cianciolo , E. Leggett

We report on the performance of a Magnetically Shielded Room (MSR) intended for next level $^3$He/$^{129}$Xe co-magnetometer experiments which require improved magnetic conditions. The MSR consists of three layers of Mu-metal with a…

Instrumentation and Detectors · Physics 2023-07-17 Fabian Allmendinger , Benjamin Brauneis , Werner Heil , Ulrich Schmidt

We reexamine the estimate of the neutron Electric Dipole Moment (NEDM) from chiral and QCD spectral sum rules (QSSR) approaches. In the former, we evaluate the pion mass corrections which are about 5% of the leading Log. results. However,…

High Energy Physics - Phenomenology · Physics 2008-11-26 Stephan Narison

The large difference between the Planck scale and the electroweak scale, known as the hierarchy problem, is addressed in certain models through the postulate of extra spatial dimensions. A search for evidence of extra spatial dimensions in…

High Energy Physics - Experiment · Physics 2013-06-11 ATLAS Collaboration

We propose using matrix-isolated paramagnetic diatomic molecules to search for the electric dipole moment of electron (eEDM). As was suggested by Shapiro in 1968, the eEDM leads to a magnetization of a sample in the external electric field.…

Atomic Physics · Physics 2009-11-11 M. G. Kozlov , Andrei Derevianko
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