Publications (65)
Gamma Backgrounds for Experiments at the High Flux Isotope Reactor
M. Andriamirado, A. B. Balantekin, C. Baldenegro +53
This article describes the deployment of a germanium detector at Oak Ridge National Lab's High Flux Isotope Reactor (HFIR) for the purpose of understanding the energy and spatial d…
Limits on Sub-GeV Dark Matter from the PROSPECT Reactor Antineutrino Experiment
M. Andriamirado, A. B. Balantekin, H. R. Band +55
If dark matter has mass lower than around 1 GeV, it will not impart enough energy to cause detectable nuclear recoils in many direct-detection experiments. However, if dark matter…
Search for Neutrinoless Double-Beta Decay in Xe with EXO-200
M. Auger, D. J. Auty, P. S. Barbeau +75
We report on a search for neutrinoless double-beta decay of Xe with EXO-200. No signal is observed for an exposure of 32.5 kg-yr, with a background of ~1.5 x 10^{-3} /(kg y…
The PROSPECT Physics Program
J. Ashenfelter, B. Balantekin, H. R. Band +61
The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, is designed to make a precise measurement of the antineutrino spectrum from a highly-enriched uranium reactor a…
Data-Driven Modeling of Electron Recoil Nucleation in PICO CF Bubble Chambers
C. Amole, M. Ardid, I. J. Arnquist +76
The primary advantage of moderately superheated bubble chamber detectors is their simultaneous sensitivity to nuclear recoils from WIMP dark matter and insensitivity to electron re…
Characterization of large area APDs for the EXO-200 detector
R. Neilson, F. LePort, A. Pocar +49
EXO-200 uses 468 large area avalanche photodiodes (LAAPDs) for detection of scintillation light in an ultra-low-background liquid xenon (LXe) detector. We describe initial measurem…
Measurement of the Antineutrino Spectrum from U Fission at HFIR with PROSPECT
PROSPECT Collaboration, J. Ashenfelter, A. B. Balantekin +67
This Letter reports the first measurement of the U energy spectrum by PROSPECT, the Precision Reactor Oscillation and Spectrum experiment, operating 7.9…
The Radioactive Source Calibration System of the PROSPECT Reactor Antineutrino Detector
PROSPECT Collaboration, J. Ashenfelter, A. B. Balantekin +62
The Precision Reactor Oscillation and Spectrum (PROSPECT) Experiment is a reactor neutrino experiment designed to search for sterile neutrinos with a mass on the order of 1 eV/c$^2…
Direct Measurement of the Bubble Nucleation Energy Threshold in a CF3I Bubble Chamber
COUPP Collaboration, E. Behnke, T. Benjamin +20
We have directly measured the energy threshold and efficiency for bubble nucleation from iodine recoils in a CF3I bubble chamber in the energy range of interest for a dark matter s…
Dark Matter Search Results from the Complete Exposure of the PICO-60 CF Bubble Chamber
C. Amole, M. Ardid, I. J. Arnquist +69
Final results are reported from operation of the PICO-60 CF dark matter detector, a bubble chamber filled with 52 kg of CF located in the SNOLAB underground laborat…
A simple radionuclide-driven single-ion source
M. Montero DÃez, K. Twelker, W. Fairbank +54
We describe a source capable of producing single barium ions through nuclear recoils in radioactive decay. The source is fabricated by electroplating 148Gd onto a silicon α-partic…
Final Measurement of the U235 Antineutrino Energy Spectrum with the PROSPECT-I Detector at HFIR
M. Adriamirado, A. B. Balantekin, C. D. Bass +61
This Letter reports one of the most precise measurements to date of the antineutrino spectrum from a purely U235-fueled reactor, made with the final dataset from the PROSPECT-I det…
Final Search for Short-Baseline Neutrino Oscillations with the PROSPECT-I Detector at HFIR
M. Andriamirado, B. Balantekin, C. D. Bass +44
The PROSPECT experiment is designed to perform precise searches for antineutrino disappearance at short distances (7 - 9~m) from compact nuclear reactor cores. This Letter reports…
Reactor Antineutrino Directionality Measurement with the PROSPECT-I Detector
M. Andriamirado, B. Balantekin, C. D. Bass +46
The PROSPECT-I detector has several features that enable measurement of the direction of a compact neutrino source. In this paper, a detailed report on the directional measurements…
Determining the bubble nucleation efficiency of low-energy nuclear recoils in superheated CF dark matter detectors
B. Ali, I. J. Arnquist, D. Baxter +54
The bubble nucleation efficiency of low-energy nuclear recoils in superheated liquids plays a crucial role in interpreting results from direct searches for weakly interacting massi…
A liquid xenon ionization chamber in an all-fluoropolymer vessel
EXO Collaboration, F. LePort, A. Pocar +42
A novel technique has been developed to build vessels for liquid xenon ionization detectors entirely out of ultra-clean fluoropolymer. We describe the advantages in terms of low ra…
Results on photon-mediated dark matter-nucleus interactions from the PICO-60 CF bubble chamber
B. Ali, I. J. Arnquist, D. Baxter +52
Many compelling models predict dark matter coupling to the electromagnetic current through higher multipole interactions, while remaining electrically neutral. Different multipole…
Developing a Bubble Chamber Particle Discriminator Using Semi-Supervised Learning
B. Matusch, C. Amole, M. Ardid +70
The identification of non-signal events is a major hurdle to overcome for bubble chamber dark matter experiments such as PICO-60. The current practice of manually developing a disc…
PROSPECT-II Physics Opportunities
M. Andriamirado, A. B. Balantekin, H. R. Band +59
The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, has made world-leading measurements of reactor antineutrinos at short baselines. In its first phase, conducted…
Performance of a segmented Li-loaded liquid scintillator detector for the PROSPECT experiment
J. Ashenfelter, A. B. Balantekin, H. R. Band +63
This paper describes the design and performance of a 50 liter, two-segment Li-loaded liquid scintillator detector that was designed and operated as prototype for the PROSPECT…
New Deep Learning Data Analysis Method for PROSPECT using GAPE: Genetic Algorithm Powered Evolution
M. Adriamirado, A. B. Balantekin, C. Bass +40
We propose a genetic algorithm powered evolution (GAPE) method to create deep learning solutions for energy and position estimation for reactor antineutrino interactions in the Pre…
A direct test of Auger cascade induced nucleation from heavy element contamination in CF bubble chambers
M. Bressler, N. Lamb, R. Neilson +1
Understanding and quantifying the gamma-induced bubble nucleation background in clean nuclear recoil detection bubble chambers is of utmost importance to bubble chamber based dark…
Probing Long-Lived Particle Production in Muon Decays at the SNS with a Highly Capable Hydrocarbon Detector
M. Andriamirado, A. B. Balantekin, C. D. Bass +43
The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) is a prolific muon producer, making it an ideal location for studying dark sector particles produced in…
Nonfuel Antineutrino Contributions in the High Flux Isotope Reactor
A. B. Balantekin, H. R. Band, C. D. Bass +53
Reactor neutrino experiments have seen major improvements in precision in recent years. With the experimental uncertainties becoming lower than those from theory, carefully conside…
Machine Learning for Single-Ended Event Reconstruction in PROSPECT Experiment
M. Andriamirado, A. B. Balantekin, C. D. Bass +43
The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, was a segmented antineutrino detector that successfully operated at the High Flux Isotope Reactor in Oak Ridge,…
Xenon purity analysis for EXO-200 via mass spectrometry
A. Dobi, C. Hall, S. Slutsky +73
We describe purity measurements of the natural and enriched xenon stockpiles used by the EXO-200 double beta decay experiment based on a mass spectrometry technique. The sensitivit…
Observation of single collisionally cooled trapped ions in a buffer gas
M. Green, J. Wodin, R. DeVoe +37
Individual Ba ions are trapped in a gas-filled linear ion trap and observed with a high signal-to-noise ratio by resonance fluorescence. Single-ion storage times of ~5 min (~1 min)…
A microfabricated sensor for thin dielectric layers
P. Fierlinger, R. DeVoe, B. Flatt +9
We describe a sensor for the measurement of thin dielectric layers capable of operation in a variety of environments. The sensor is obtained by microfabricating a capacitor with in…
Physics reach of a low threshold scintillating argon bubble chamber in coherent elastic neutrino-nucleus scattering reactor experiments
L. J. Flores, Eduardo Peinado, E. Alfonso-Pita +31
The physics reach of a low threshold (100 eV) scintillating argon bubble chamber sensitive to Coherent Elastic neutrino-Nucleus Scattering (CENS) from reactor neutrinos is stud…
A xenon gas purity monitor for EXO
EXO Collaboration, A. Dobi, C. Hall +57
We discuss the design, operation, and calibration of two versions of a xenon gas purity monitor (GPM) developed for the EXO double beta decay program. The devices are sensitive to…
Dark Matter Search Results from the PICO-60 CF Bubble Chamber
C. Amole, M. Ardid, I. J. Arnquist +59
New results are reported from the operation of the PICO-60 dark matter detector, a bubble chamber filled with 52 kg of CF located in the SNOLAB underground laboratory. As i…
Recommended conventions for reporting results from direct dark matter searches
D. Baxter, I. M. Bloch, E. Bodnia +23
The field of dark matter detection is a highly visible and highly competitive one. In this paper, we propose recommendations for presenting dark matter direct detection results par…
White Paper on Light Sterile Neutrino Searches and Related Phenomenology
M. A. Acero, C. A. Argüelles, M. Hostert +169
This white paper provides a comprehensive review of our present understanding of experimental neutrino anomalies that remain unresolved, charting the progress achieved over the las…
Systematic study of trace radioactive impurities in candidate construction materials for EXO-200
D. S. Leonard, P. Grinberg, P. Weber +54
The Enriched Xenon Observatory (EXO) will search for double beta decays of 136Xe. We report the results of a systematic study of trace concentrations of radioactive impurities in a…
Joint Measurement of the U Antineutrino Spectrum by Prospect and Stereo
H. Almazán, M. Andriamirado, A. B. Balantekin +82
The PROSPECT and STEREO collaborations present a combined measurement of the pure U antineutrino spectrum, without site specific corrections or detector-dependent effects.…
A magnetically-driven piston pump for ultra-clean applications
F. LePort, R. Neilson, P. S. Barbeau +77
A magnetically driven piston pump for xenon gas recirculation is presented. The pump is designed to satisfy extreme purity and containment requirements, as is appropriate for the r…
A linear RFQ ion trap for the Enriched Xenon Observatory
B. Flatt, M. Green, J. Wodin +39
The design, construction, and performance of a linear radio-frequency ion trap (RFQ) intended for use in the Enriched Xenon Observatory (EXO) are described. EXO aims to detect the…
Physics Opportunities with PROSPECT-II
M. Andriamirado, A. B. Balantekin, C. D. Bass +61
The PROSPECT experiment has substantially addressed the original 'Reactor Antineutrino Anomaly' by performing a high-resolution spectrum measurement from an enriched compact reacto…
Improved dark matter search results from PICO-2L Run 2
C. Amole, M. Ardid, I. J. Arnquist +55
New data are reported from a second run of the 2-liter PICO-2L CF bubble chamber with a total exposure of 129kg-days at a thermodynamic threshold energy of 3.3keV.…
Absorption of Fermionic Dark Matter in the PICO-60 CF Bubble Chamber
E. Adams, B. Ali, R. Anderson-Dornan +58
Fermionic dark matter absorption on nuclear targets via neutral current interactions is explored using a non-relativistic effective field theory framework. An analysis of data from…
The Intermediate Neutrino Program
C. Adams, J. R. Alonso, A. M. Ankowski +186
The US neutrino community gathered at the Workshop on the Intermediate Neutrino Program (WINP) at Brookhaven National Laboratory February 4-6, 2015 to explore opportunities in neut…
Observation of Two-Neutrino Double-Beta Decay in Xe-136 with EXO-200
N. Ackerman, B. Aharmim, M. Auger +100
We report the observation of two-neutrino double-beta decay in Xe-136 with T_1/2 = 2.11 +- 0.04 (stat.) +- 0.21 (sys.) x 10^21 yr. This second order process, predicted by the Stand…
Calibration Plan for the SBC 10-kg Liquid Argon Detector with 100 eV Target Threshold
E. Alfonso-Pita, D. Baxter, E. Behnke +32
The Scintillating Bubble Chamber (SBC) Collaboration is designing a new generation of low background, noble liquid bubble chamber experiments with sub-keV nuclear recoil threshold.…
Coherent elastic neutrino-nucleus scattering: Terrestrial and astrophysical applications
M. Abdullah, H. Abele, D. Akimov +272
Coherent elastic neutrino-nucleus scattering (CENS) is a process in which neutrinos scatter on a nucleus which acts as a single particle. Though the total cross section is larg…
The EXO-200 detector, part II: Auxiliary Systems
N. Ackerman, J. Albert, M. Auger +157
The EXO-200 experiment searched for neutrinoless double-beta decay of Xe with a single-phase liquid xenon detector. It used an active mass of 110 kg of 80.6%-enriched liqui…
The EXO-200 detector, part I: Detector design and construction
M. Auger, D. J. Auty, P. S. Barbeau +78
EXO-200 is an experiment designed to search for double beta decay of Xe with a single-phase, liquid xenon detector. It uses an active mass of 110 kg of xenon enriched to 80…
Calibration strategy of the PROSPECT-II detector with external and intrinsic sources
M. Andriamirado, A. B. Balantekin, C. D. Bass +58
This paper presents an energy calibration scheme for an upgraded reactor antineutrino detector for the Precision Reactor Oscillation and Spectrum Experiment (PROSPECT). The PROSPEC…
Dark Matter Search Results from the PICO-2L CF Bubble Chamber
C. Amole, M. Ardid, D. M. Asner +54
New data are reported from the operation of a 2-liter CF bubble chamber in the 2100 meter deep SNOLAB underground laboratory, with a total exposure of 211.5 kg-days at four…
Light Collection and Pulse-Shape Discrimination in Elongated Scintillator Cells for the PROSPECT Reactor Antineutrino Experiment
J. Ashenfelter, B. Balantekin, H. R. Band +63
A meter-long, 23-liter EJ-309 liquid scintillator detector has been constructed to study the light collection and pulse-shape discrimination performance of elongated scintillator c…
Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment
200 Collaboration, G. Anton, I. Badhrees +99
Liquid xenon (LXe) is employed in a number of current and future detectors for rare event searches. We use the EXO-200 experimental data to measure the absolute scintillation and i…
Mobility of thorium ions in liquid xenon
K. Wamba, C. Hall, M. Breidenbach +27
We present a measurement of the Th ion mobility in LXe at 163.0 K and 0.9 bar. The result obtained, 0.2400.011 (stat) 0.011 (syst) cm/(kV-s), is compared wi…
The PROSPECT Reactor Antineutrino Experiment
PROSPECT Collaboration, J. Ashenfelter, A. B. Balantekin +86
The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, is designed to make both a precise measurement of the antineutrino spectrum from a highly-enriched uranium reac…
Batch VUV4 Characterization for the SBC-LAr10 scintillating bubble chamber
H. Hawley-Herrera, E. Alfonso-Pita, E. Behnke +28
The Scintillating Bubble Chamber (SBC) collaboration purchased 32 Hamamatsu VUV4 silicon photomultipliers (SiPMs) for use in SBC-LAr10, a bubble chamber containing 10~kg of liquid…
A Low Mass Optical Grid for the PROSPECT Reactor Antineutrino Detector
PROSPECT Collaboration, J. Ashenfelter, A. B. Balantekin +67
PROSPECT, the Precision Reactor Oscillation and SPECTrum experiment, is a short-baseline reactor antineutrino experiment designed to provide precision measurements of the U…
Low-threshold response of a scintillating xenon bubble chamber to nuclear and electronic recoils
E. Alfonso-Pita, E. Behnke, M. Bressler +29
A device filled with pure xenon first demonstrated the ability to operate simultaneously as a bubble chamber and scintillation detector in 2017. Initial results from data taken at…
Note on arXiv:2005.05301, 'Preparation of the Neutrino-4 experiment on search for sterile neutrino and the obtained results of measurements'
H. Almazán, M. Andriamirado, A. B. Balantekin +79
We comment on the claimed observation [arXiv:arXiv:2005.05301] of sterile neutrino oscillations by the Neutrino-4 collaboration. Such a claim, which requires the existence of a new…
Velocity independent constraints on spin-dependent DM-nucleon interactions from IceCube and PICO
IceCube Collaboration, M. G. Aartsen, M. Ackermann +419
Adopting the Standard Halo Model (SHM) of an isotropic Maxwellian velocity distribution for dark matter (DM) particles in the Galaxy, the most stringent current constraints on thei…
Dark Matter Search Results from the PICO-60 CFI Bubble Chamber
C. Amole, M. Ardid, D. M. Asner +56
New data are reported from the operation of the PICO-60 dark matter detector, a bubble chamber filled with 36.8 kg of CFI and located in the SNOLAB underground laboratory. PICO…
Improved Short-Baseline Neutrino Oscillation Search and Energy Spectrum Measurement with the PROSPECT Experiment at HFIR
M. Andriamirado, A. B. Balantekin, H. R. Band +61
We present a detailed report on sterile neutrino oscillation and U-235 antineutrino energy spectrum measurement results from the PROSPECT experiment at the highly enriched High Flu…
Search for inelastic dark matter-nucleus scattering with the PICO-60 CFI and CF bubble chambers
E. Adams, B. Ali, I. J. Arnquist +52
PICO bubble chambers have exceptional sensitivity to inelastic dark matter-nucleus interactions due to a combination of their extended nuclear recoil energy detection window from a…
Lithium-loaded Liquid Scintillator Production for the PROSPECT experiment
PROSPECT Collaboration, J. Ashenfelter, A. B. Balantekin +67
This work reports the production and characterization of lithium-loaded liquid scintillator (LiLS) for the Precision Reactor Oscillation and Spectrum Experiment (PROSPECT). Fifty-n…
Snowmass 2021 Scintillating Bubble Chambers: Liquid-noble Bubble Chambers for Dark Matter and CENS Detection
E. Alfonso-Pita, M. Baker, E. Behnke +42
The Scintillating Bubble Chamber (SBC) Collaboration is developing liquid-noble bubble chambers for the quasi-background-free detection of low-mass (GeV-scale) dark matter and cohe…
First search for short-baseline neutrino oscillations at HFIR with PROSPECT
J. Ashenfelter, A. B. Balantekin, C. Baldenegro +85
This Letter reports the first scientific results from the observation of antineutrinos emitted by fission products of U at the High Flux Isotope Reactor. PROSPECT, the Prec…
Joint Determination of Reactor Antineutrino Spectra from U and Pu Fission by Daya Bay and PROSPECT
Daya Bay Collaboration, PROSPECT Collaboration, F. P. An +237
A joint determination of the reactor antineutrino spectra resulting from the fission of U and Pu has been carried out by the Daya Bay and PROSPECT collaborations. T…
Trace radioactive impurities in final construction materials for EXO-200
D. S. Leonard, D. Auty, T. Didberidze +98
We report results from a systematic measurement campaign conducted to identify low radioactivity materials for the construction of the EXO-200 double beta decay experiment. Partial…