activity
20142026
most citedMeasurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm

1.3k citations · 2.4k across the 38 of their papers we have counts for

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physics.ins-det2026

Cyclotron Radiation Signal Characterization in Resonant Cavities for the Project 8 Neutrino Mass Experiment

A. Ashtari Esfahani, S. Bhagvati, H. P. Binney +60

Many experimental methods in physics require understanding radiation from single particles into non-trivial electromagnetic mode structures. Such characterization is critical for C…

physics.ins-det2025

The real-time data processing and acquisition system for Project 8 Phase II

A. Ashtari Esfahani, A. Banducci, S. Böser +36

In Phase II of the Project 8 neutrino mass experiment, electrons from the decays of tritium or Kr are detected via their 26 GHz cyclotron radiation whil…

physics.ins-det2025

Antenna Arrays for CRES-based Neutrino Mass Measurement

A. Ashtari Esfahani, S. Bhagvati, S. Böser +65

CRES is a technique for precision measurements of kinetic energies of charged particles, pioneered by the Project 8 experiment to measure the neutrino mass using the tritium endpoi…

physics.ins-det2025

Project 8 Apparatus for Cyclotron Radiation Emission Spectroscopy with Kr and Tritium

A. Ashtari Esfahani, D. M. Asner, S. Böser +53

Cyclotron Radiation Emission Spectroscopy (CRES) is a novel technique for the precise measurement of relativistic electron energy. This technique is being employed by the Project~8…

physics.ins-det2025

Dynamics of Magnetic Evaporative Beamline Cooling for Preparation of Cold Atomic Beams

A. Ashtari Esfahani, S. Bhagvati, S. Böser +55

The most sensitive direct neutrino mass searches today are based on measurement of the endpoint of the beta spectrum of tritium to infer limits on the mass of the unobserved neutri…

physics.ins-det2025

Calorimetric Wire Detector for Measurement of Atomic Hydrogen Beams

M. Astaschov, S. Bhagvati, S. Böser +53

A calorimetric detector for minimally disruptive measurements of atomic hydrogen beams is described. The calorimeter measures heat released by the recombination of hydrogen atoms i…

physics.ins-det2024

The fixed probe storage ring magnetometer for the Muon g-2 experiment at Fermi National Accelerator Laboratory

Erik Swanson, Martin Fertl, Alejandro Garcia +7

The goal of the FNAL E989 experiment is to measure the muon magnetic anomaly to unprecedented accuracy and precision at the Fermi National Accelerator Laboratory. To meet this goal…

physics.ins-det2024★ 3 cited

Deep Learning Based Event Reconstruction for Cyclotron Radiation Emission Spectroscopy

A. Ashtari Esfahani, S. Böser, N. Buzinsky +48

The objective of the Cyclotron Radiation Emission Spectroscopy (CRES) technology is to build precise particle energy spectra. This is achieved by identifying the start frequencies…

physics.ins-det2023★ 6 cited

SPECT: A spin-flip loaded magnetic ultracold neutron trap for a determination of the neutron lifetime

J. Auler, M. Engler, K. Franz +13

The confinement of ultracold neutrons (UCNs) in a three dimensional magnetic field gradient trap allows for a measurement of the free neutron lifetime with superior control over sp…

physics.ins-det2023★ 1 cited

Real-time Signal Detection for Cyclotron Radiation Emission Spectroscopy Measurements using Antenna Arrays

A. Ashtari Esfahani, S. Böser, N. Buzinsky +48

Cyclotron Radiation Emission Spectroscopy (CRES) is a technique for precision measurement of the energies of charged particles, which is being developed by the Project 8 Collaborat…

physics.ins-det2022★ 6 cited

SYNCA: A Synthetic Cyclotron Antenna for the Project 8 Collaboration

A. Ashtari Esfahani, S. Böser, N. Buzinsky +42

Cyclotron Radiation Emission Spectroscopy (CRES) is a technique for measuring the kinetic energy of charged particles through a precision measurement of the frequency of the cyclot…

physics.ins-det2022★ 39 cited

The `n2EDM MSR' -- a very large magnetically shielded room with an exceptional performance for fundamental physics measurements

N. J. Ayres, G. Ban, G. Bison +41

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 2.92m, thus…

physics.ins-det2021★ 3 cited

Viterbi Decoding of CRES Signals in Project 8

A. Ashtari Esfahani, Z. Bogorad, S. Böser +45

Cyclotron Radiation Emission Spectroscopy (CRES) is a modern approach for determining charged particle energies via high-precision frequency measurements of the emitted cyclotron r…

physics.ins-det2021★ 7 cited

High-Accuracy Absolute Magnetometry with Application to the Fermilab Muon Experiment

D. Flay, D. Kawall, T. Chupp +10

We present details of a high-accuracy absolute scalar magnetometer based on pulsed proton NMR. The -field magnitude is determined from the precession frequency of proton spins i…

physics.ins-det2021★ 16 cited

Systematic and Statistical Uncertainties of the Hilbert-Transform Based High-precision FID Frequency Extraction Method

Ran Hong, Simon Corrodi, Saskia Charity +23

Pulsed nuclear magnetic resonance (NMR) is widely used in high-precision magnetic field measurements. The absolute value of the magnetic field is determined from the precession fre…

physics.ins-det2019★ 29 cited

Electron Radiated Power in Cyclotron Radiation Emission Spectroscopy Experiments

A. Ashtari Esfahani, V. Bansal, S. Boser +38

The recently developed technique of Cyclotron Radiation Emission Spectroscopy (CRES) uses frequency information from the cyclotron motion of an electron in a magnetic bottle to inf…

physics.ins-det2017

Project 8 detector upgrades for a tritium beta decay spectrum using cyclotron radiation

A Ashtari Esfahani, S Böser, C Claessens +27

Following the successful observation of single conversion electrons from Kr using Cyclotron Radiation Emission Spectroscopy (CRES), Project 8 is now advancing its focus tow…

physics.ins-det2017

Results from the Project 8 phase-1 cyclotron radiation emission spectroscopy detector

A Ashtari Esfahani, S Böser, C Claessens +27

The Project 8 collaboration seeks to measure the absolute neutrino mass scale by means of precision spectroscopy of the beta decay of tritium. Our technique, cyclotron radiation em…

physics.ins-det2017

Project 8 Phase III Design Concept

A Ashtari Esfahani, S Böser, C Claessens +27

We present a working concept for Phase III of the Project 8 experiment, aiming to achieve a neutrino mass sensitivity of ( C.L.) using a large volume of mole…

physics.ins-det2017★ 144 cited

Determining the neutrino mass with Cyclotron Radiation Emission Spectroscopy - Project 8

Ali Ashtari Esfahani, David M. Asner, Sebastian Böser +41

The most sensitive direct method to establish the absolute neutrino mass is observation of the endpoint of the tritium beta-decay spectrum. Cyclotron Radiation Emission Spectroscop…

physics.ins-det2016★ 5 cited

Next Generation Muon g-2 Experiment at FNAL

Martin Fertl

The precise measurement of the muon anomalous magnetic moment has stimulated much theoretical and experimental efforts over more than six decades. The last experiment…

physics.ins-det2014★ 129 cited

Single electron detection and spectroscopy via relativistic cyclotron radiation

D. M. Asner, R. F. Bradley, L. de Viveiros +24

It has been understood since 1897 that accelerating charges must emit electromagnetic radiation. Cyclotron radiation, the particular form of radiation emitted by an electron orbiti…