C. Bass - The PROSPECT Collaboration

C. Bass
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Contact Details

Name
C. Bass
Affiliation
The PROSPECT Collaboration
City
Paramus
Country
United States

Pubs By Year

Pub Categories

 
Physics - Instrumentation and Detectors (9)
 
Nuclear Experiment (9)
 
High Energy Physics - Experiment (4)
 
Physics - Superconductivity (1)
 
Physics - Mesoscopic Systems and Quantum Hall Effect (1)
 
Quantum Physics (1)

Publications Authored By C. Bass

2017May
Authors: D. Ho, P. Peng, C. Bass, P. Collins, A. D'Angelo, A. Deur, J. Fleming, C. Hanretty, T. Kageya, M. Khandaker, F. J. Klein, E. Klempt, V. Laine, M. M. Lowry, H. Lu, C. Nepali, V. A. Nikonov, T. O'Connell, A. M. Sandorfi, A. V. Sarantsev, R. A. Schumacher, I. I. Strakovsky, A. Švarc, N. K. Walford, X. Wei, C. S. Whisnant, R. L. Workman, I. Zonta, K. P. Adhikari, D. Adikaram, Z. Akbar, M. J. Amaryan, S. Anefalos Pereira, H. Avakian, J. Ball, M. Bashkanov, M. Battaglieri, V. Batourine, I. Bedlinskiy, W. J. Briscoe, V. D. Burkert, D. S. Carman, A. Celentano, G. Charles, T. Chetry, G. Ciullo, L. Clark, L. Colaneri, P. L. Cole, M. Contalbrigo, V. Crede, N. Dashyan, E. De Sanctis, R. De Vita, C. Djalali, R. Dupre, A. El Alaoui, L. El Fassi, L. Elouadrhiri, G. Fedotov, S. Fegan, R. Fersch, A. Filippi, A. Fradi, Y. Ghandilyan, G. P. Gilfoyle, F. X. Girod, D. I. Glazier, C. Gleason, W. Gohn, E. Golovatch, R. W. Gothe, K. A. Griffioen, M. Guidal, L. Guo, H. Hakobyan, N. Harrison, K. Hicks, M. Holtrop, S. M. Hughes, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, D. Jenkins, H. Jiang, H. S. Jo, K. Joo, S. Joosten, D. Keller, G. Khachatryan, A. Kim, W. Kim, A. Klein, V. Kubarovsky, S. V. Kuleshov, L. Lanza, P. Lenisa, K. Livingston, I . J . D. MacGregor, N. Markov, B. McKinnon, T. Mineeva, V. Mokeev, R. A. Montgomery, A Movsisyan, C. Munoz Camacho, G. Murdoch, S. Niccolai, G. Niculescu, M. Osipenko, M. Paolone, R. Paremuzyan, K. Park, E. Pasyuk, W. Phelps, O. Pogorelko, J. W. Price, S. Procureur, D. Protopopescu, M. Ripani, D. Riser, B. G. Ritchie, A. Rizzo, G. Rosner, F. Sabatié, C. Salgado, Y. G. Sharabian, Iu. Skorodumina, G. D. Smith, D. I. Sober, D. Sokhan, N. Sparveris, S. Strauch, Ye Tian, B. Torayev, M. Ungaro, H. Voskanyan, D. P. Watts, M. H. Wood, N. Zachariou, J. Zhang, Z. W. Zhao

We report the first beam-target double-polarization asymmetries in the $\gamma + n(p) \rightarrow \pi^- + p(p)$ reaction spanning the nucleon resonance region from invariant mass $W$= $1500$ to $2300$ MeV. Circularly polarized photons and longitudinally polarized deuterons in $H\!D$ have been used with the CLAS detector at Jefferson Lab. The exclusive final state has been extracted using three very different analyses that show excellent agreement, and these have been used to deduce the {\it{E}} polarization observable for an effective neutron target. Read More

The standard model predicts that, in addition to a proton, an electron, and an antineutrino, a continuous spectrum of photons is emitted in the $\beta$ decay of the free neutron. We report on the RDK II experiment which measured the photon spectrum using two different detector arrays. An annular array of bismuth germanium oxide scintillators detected photons from 14 to 782~keV. Read More

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 and probe eV-scale sterile neutrinos by searching for neutrino oscillations over meter-long distances. PROSPECT is conceived as a 2-phase experiment utilizing segmented $^6$Li-doped liquid scintillator detectors for both efficient detection of reactor antineutrinos through the inverse beta decay reaction and excellent background discrimination. PROSPECT Phase I consists of a movable 3-ton antineutrino detector at distances of 7 - 12 m from the reactor core. Read More

2015Aug
Affiliations: 1The PROSPECT Collaboration, 2The PROSPECT Collaboration, 3The PROSPECT Collaboration, 4The PROSPECT Collaboration, 5The PROSPECT Collaboration, 6The PROSPECT Collaboration, 7The PROSPECT Collaboration, 8The PROSPECT Collaboration, 9The PROSPECT Collaboration, 10The PROSPECT Collaboration, 11The PROSPECT Collaboration, 12The PROSPECT Collaboration, 13The PROSPECT Collaboration, 14The PROSPECT Collaboration, 15The PROSPECT Collaboration, 16The PROSPECT Collaboration, 17The PROSPECT Collaboration, 18The PROSPECT Collaboration, 19The PROSPECT Collaboration, 20The PROSPECT Collaboration, 21The PROSPECT Collaboration, 22The PROSPECT Collaboration, 23The PROSPECT Collaboration, 24The PROSPECT Collaboration, 25The PROSPECT Collaboration, 26The PROSPECT Collaboration, 27The PROSPECT Collaboration, 28The PROSPECT Collaboration, 29The PROSPECT Collaboration, 30The PROSPECT Collaboration, 31The PROSPECT Collaboration, 32The PROSPECT Collaboration, 33The PROSPECT Collaboration, 34The PROSPECT Collaboration, 35The PROSPECT Collaboration, 36The PROSPECT Collaboration, 37The PROSPECT Collaboration, 38The PROSPECT Collaboration, 39The PROSPECT Collaboration, 40The PROSPECT Collaboration, 41The PROSPECT Collaboration, 42The PROSPECT Collaboration, 43The PROSPECT Collaboration, 44The PROSPECT Collaboration, 45The PROSPECT Collaboration, 46The PROSPECT Collaboration, 47The PROSPECT Collaboration, 48The PROSPECT Collaboration, 49The PROSPECT Collaboration, 50The PROSPECT Collaboration, 51The PROSPECT Collaboration, 52The PROSPECT Collaboration, 53The PROSPECT Collaboration, 54The PROSPECT Collaboration, 55The PROSPECT Collaboration, 56The PROSPECT Collaboration, 57The PROSPECT Collaboration, 58The PROSPECT Collaboration, 59The PROSPECT Collaboration, 60The PROSPECT Collaboration, 61The PROSPECT Collaboration, 62The PROSPECT Collaboration, 63The PROSPECT Collaboration, 64The PROSPECT Collaboration, 65The PROSPECT Collaboration, 66The PROSPECT Collaboration

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 cells for the PROSPECT reactor antineutrino experiment. The magnitude and uniformity of light collection and neutron/gamma discrimination power in the energy range of antineutrino inverse beta decay products have been studied using gamma and spontaneous fission calibration sources deployed along the cell long axis. We also study neutron-gamma discrimination and light collection abilities for differing PMT and reflector configurations. Read More

2015Jun
Affiliations: 1The PROSPECT Collaboration, 2The PROSPECT Collaboration, 3The PROSPECT Collaboration, 4The PROSPECT Collaboration, 5The PROSPECT Collaboration, 6The PROSPECT Collaboration, 7The PROSPECT Collaboration, 8The PROSPECT Collaboration, 9The PROSPECT Collaboration, 10The PROSPECT Collaboration, 11The PROSPECT Collaboration, 12The PROSPECT Collaboration, 13The PROSPECT Collaboration, 14The PROSPECT Collaboration, 15The PROSPECT Collaboration, 16The PROSPECT Collaboration, 17The PROSPECT Collaboration, 18The PROSPECT Collaboration, 19The PROSPECT Collaboration, 20The PROSPECT Collaboration, 21The PROSPECT Collaboration, 22The PROSPECT Collaboration, 23The PROSPECT Collaboration, 24The PROSPECT Collaboration, 25The PROSPECT Collaboration, 26The PROSPECT Collaboration, 27The PROSPECT Collaboration, 28The PROSPECT Collaboration, 29The PROSPECT Collaboration, 30The PROSPECT Collaboration, 31The PROSPECT Collaboration, 32The PROSPECT Collaboration, 33The PROSPECT Collaboration, 34The PROSPECT Collaboration, 35The PROSPECT Collaboration, 36The PROSPECT Collaboration, 37The PROSPECT Collaboration, 38The PROSPECT Collaboration, 39The PROSPECT Collaboration, 40The PROSPECT Collaboration, 41The PROSPECT Collaboration, 42The PROSPECT Collaboration, 43The PROSPECT Collaboration, 44The PROSPECT Collaboration, 45The PROSPECT Collaboration, 46The PROSPECT Collaboration, 47The PROSPECT Collaboration, 48The PROSPECT Collaboration, 49The PROSPECT Collaboration, 50The PROSPECT Collaboration, 51The PROSPECT Collaboration, 52The PROSPECT Collaboration, 53The PROSPECT Collaboration, 54The PROSPECT Collaboration, 55The PROSPECT Collaboration, 56The PROSPECT Collaboration, 57The PROSPECT Collaboration, 58The PROSPECT Collaboration, 59The PROSPECT Collaboration, 60The PROSPECT Collaboration, 61The PROSPECT Collaboration

Research reactors host a wide range of activities that make use of the intense neutron fluxes generated at these facilities. Recent interest in performing measurements with relatively low event rates, e.g. Read More

A fast neutron spectrometer consisting of segmented plastic scintillator and He-3 proportional counters was constructed for the measurement of neutrons in the energy range 1 MeV to 200 MeV. We discuss its design, principles of operation, and the method of analysis. The detector is capable of observing very low neutron fluxes in the presence of ambient gamma background and does not require scintillator pulseshape discrimination. Read More

Current models of antineutrino production in nuclear reactors predict detection rates and spectra at odds with the existing body of direct reactor antineutrino measurements. High-resolution antineutrino detectors operated close to compact research reactor cores can produce new precision measurements useful in testing explanations for these observed discrepancies involving underlying nuclear or new physics. Absolute measurement of the 235U-produced antineutrino spectrum can provide additional constraints for evaluating the accuracy of current and future reactor models, while relative measurements of spectral distortion between differing baselines can be used to search for oscillations arising from the existence of eV-scale sterile neutrinos. Read More

We present a straightforward method for particle identification and background rejection in $^3$He proportional counters for use in neutron detection. By measuring the risetime and pulse height of the preamplifier signals, one may define a region in the risetime versus pulse height space where the events are predominately from neutron interactions. For six proportional counters surveyed in a low-background environment, we demonstrate the ability to reject alpha-particle events with an efficiency of 99%. Read More

As part of an experiment to measure the spectrum of photons emitted in beta-decay of the free neutron, we developed and operated a detector consisting of 12 bismuth germanate (BGO) crystals coupled to avalanche photodiodes (APDs). The detector was operated near liquid nitrogen temperature in the bore of a superconducting magnet and registered photons with energies from 5 keV to 1000 keV. To enlarge the detection range, we also directly detected soft X-rays with energies between 0. Read More

The characterization of a liquid scintillator incorporating an aqueous solution of enriched lithium chloride to produce a scintillator with 0.40% Li-6 is presented, including the performance of the scintillator in terms of its optical properties and neutron response. The scintillator was incorporated into a fast neutron spectrometer, and the light output spectra from 2. Read More

A liquid helium target system was designed and built to perform a precision measurement of the parity-violating neutron spin rotation in helium due to the nucleon-nucleon weak interaction. The measurement employed a beam of low energy neutrons that passed through a crossed neutron polarizer--analyzer pair with the liquid helium target system located between them. Changes between the target states generated differences in the beam transmission through the polarizer--analyzer pair. Read More

Tunneling of vortex-antivortex pairs across a superconducting film can be controlled via inductive coupling of the film to an external circuit. We study this process numerically in a toroidal film (periodic boundary conditions in both directions) by using the dual description of vortices, in which they are represented by a fundamental quantum field. We compare the results to those obtained in the instanton approach. Read More