107 citations · 691 across the 20 of their papers we have counts for
19 papers
A New High-Intensity Source for Ultracold Neutrons
K. Abe, S. Ahmed, B. Algohi +78
The TRIUMF UltraCold Advanced Neutron (TUCAN) collaboration has completed a new superthermal source for ultracold neutrons (UCNs) at TRIUMF. Neutrons produced in a spallation targe…
A magnetic environment with reproducible spatio-temporal magnetic conditions at picotesla level
Philipp Wunderl, Maximilian Huber, Florian Büttiker +16
Walk-in, picotesla-scale environments are essential for measurements of biomagnetism and fundamental physics. However, conventional rooms require typical active dynamic compensatio…
Performance of the TUCAN Magnetically Shielded Room
S. Ahmed, B. Algohi, D. Anthony +64
The TRIUMF Ultracold Advanced Neutron (TUCAN) collaboration has commissioned a large magnetically shielded room to be used for measuring the neutron electric dipole moment (nEDM) t…
Scalar-Magnetometer Search for Ultralight Dark Photon Dark Matter with a Single-Site, Two-Sensor Array: A 6-Channel DTFT Likelihood Analysis with Scalar Optically Pumped Magnetometers
Peisen Zhao, Ole Behrens, Maja Benning +6
We report on a laboratory search for ultralight dark photon dark matter using a single-site, two-sensor scalar magnetometer array. The experiment employs two scalar optically pumpe…
Initial results of the TRIUMF ultracold advanced neutron source
B. Algohi, D. Anthony, L. Barrón-Palos +83
We report the first results on ultracold neutron production from a new spallation-driven superfluid He (He-II) source at TRIUMF, which is being prepared for a new, precise meas…
Characterization of electroless nickel-phosphorus plating for ultracold-neutron storage
H. Akatsuka, T. Andalib, B. Bell +51
Electroless nickel plating is an established industrial process that provides a robust and relatively low-cost coating suitable for transporting and storing ultracold neutrons (UCN…
The Precision nEDM Measurement with UltraCold Neutrons at TRIUMF
Ryohei Matsumiya, Hiroaki Akatsuka, Chris P. Bidinosti +45
The TRIUMF Ultra-Cold Advanced Neutron (TUCAN) collaboration aims at a precision neutron electric dipole moment (nEDM) measurement with an uncertainty of $10^{-27}\,e\cdot\mathrm{c…
A Highly Drift-stable Atomic Magnetometer for Fundamental Physics Experiments
M. Rosner, D. Beck, P. Fierlinger +7
We report the design and performance of a non-magnetic drift stable optically pumped cesium magnetometer with a measured sensitivity of 35 fT at 200 s integration time and stabilit…
New Limit on the Permanent Electric Dipole Moment of Xe using He Comagnetometry and SQUID Detection
N. Sachdeva, I. Fan, E. Babcock +20
We report results of a new technique to measure the electric dipole moment of Xe with He comagnetometry. Both species are polarized using spin-exchange optical pumping,…
A fast-switching magnet serving a spallation-driven ultracold neutron source
S. Ahmed, E. Altiere, T. Andalib +47
A fast-switching, high-repetition-rate magnet and power supply have been developed for and operated at TRIUMF, to deliver a proton beam to the new ultracold neutron (UCN) facility.…
A new measurement of the permanent electric dipole moment of Xe using He comagnetometry and SQUID detection
N. Sachdeva, I. Fan, E. Babcock +18
We describe a new technique to measure the EDM of Xe with He comagnetometry. Both species are polarized using spin-exchange optical pumping, transferred to a measuremen…
A beamline for fundamental neutron physics at TRIUMF
S. Ahmed, T. Andalib, M. J. Barnes +44
This article describes the new primary proton beamline 1U at TRIUMF. The purpose of this beamline is to produce ultracold neutrons (UCN) for fundamental-physics experiments. It del…
First ultracold neutrons produced at TRIUMF
S. Ahmed, E. Altiere, T. Andalib +50
We installed a source for ultracold neutrons at a new, dedicated spallation target at TRIUMF. The source was originally developed in Japan and uses a superfluid-helium converter co…
Frequency shifts in noble-gas magnetometers
William A. Terrano, Jonas Meinel, Natasha Sachdeva +5
Polarized nuclei are a powerful tool in nuclear spin studies and in searches for beyond-the-standard model physics. Noble-gas comagnetometer systems, which compare two nuclear spec…
A large-scale magnetic shield with 10^6 damping at mHz frequencies
I. Altarev, M. Bales, D. H. Beck +16
We present a magnetically shielded environment with a damping factor larger than one million at the mHz frequency regime and an extremely low field and gradient over an extended vo…
A magnetically shielded room with ultra low residual field and gradient
I. Altarev, E. Babcock, D. Beck +29
A versatile and portable magnetically shielded room with a field of (700 \pm 200) pT within a central volume of 1m x 1m x 1m and a field gradient less than 300 pT/m is described. T…
New constraints on Lorentz invariance violation from the neutron electric dipole moment
I. Altarev, C. A. Baker, G. Ban +40
We propose an original test of Lorentz invariance in the interaction between a particle spin and an electromagnetic field and report on a first measurement using ultracold neutrons…
Neutron to Mirror-Neutron Oscillations in the Presence of Mirror Magnetic Fields
I. Altarev, C. A. Baker, G. Ban +43
We performed ultracold neutron (UCN) storage measurements to search for additional losses due to neutron (n) to mirror-neutron (n') oscillations as a function of an applied magneti…
Test of Lorentz invariance with spin precession of ultracold neutrons
I. Altarev, C. A. Baker, G. Ban +43
A clock comparison experiment, analyzing the ratio of spin precession frequencies of stored ultracold neutrons and Hg atoms is reported. %57 No daily variation of this rati…