scholarly journals Forward modeling of pile-up events in liquid scintillator detectors for neutron emission spectroscopy

2021 ◽  
Vol 92 (8) ◽  
pp. 083502
Author(s):  
A. Sahlberg ◽  
J. Eriksson ◽  
S. Conroy ◽  
G. Ericsson ◽  
L. Hägg ◽  
...  
Keyword(s):  
Emission Spectroscopy ◽  
Neutron Emission ◽  
Liquid Scintillator ◽  
Forward Modeling ◽  
Pile Up ◽  
Scintillator Detectors

scholarly journals Studying fission neutrons with 2E-2v and 2E

2018 ◽  
Vol 169 ◽  
pp. 00002 ◽  
Author(s):  
Ali Al-Adili ◽  
Kaj Jansson ◽  
Diego Tarrío ◽  
Franz-Josef Hambsch ◽  
Alf Göök ◽  
...  
Keyword(s):  
Detection Efficiency ◽  
Neutron Emission ◽  
Liquid Scintillator ◽  
Fission Neutron ◽  
Excitation Energies ◽  
Geometrical Constraints ◽  
Fission Neutrons ◽  
Scintillator Detectors ◽  
Mass Dependent ◽  
Prompt Fission

This work aims at measuring prompt-fission neutrons at different excitation energies of the nucleus. Two independent techniques, the 2E-2v and the 2E techniques, are used to map the characteristics of the mass-dependent prompt fission neutron multiplicity, v(A), when the excitation energy is increased. The VERDI 2E-2v spectrometer is being developed at JRC-GEEL. The Fission Fragment (FF) energies are measured using two arrays of 16 silicon (Si) detectors each. The FFs velocities are obtained by time-of-flight, measured between micro-channel plates (MCP) and Si detectors. With MCPs placed on both sides of the fission source, VERDI allows for independent timing measurements for both fragments. 252Cf(sf) was measured and the present results revealed particular features of the 2E-2v technique. Dedicated simulations were also performed using the GEF code to study important aspects of the 2E-2v technique. Our simulations show that prompt neutron emission has a non-negligible impact on the deduced fragment data and affects also the shape of v(A). Geometrical constraints lead to a total-kinetic energy-dependent detection efficiency. The 2E technique utilizes an ionization chamber together with two liquid scintillator detectors. Two measurements have been performed, one of 252Cf(sf) and another one of thermal-neutron induced fission in 235U(n,f). Results from 252Cf(sf) are reported here.

Neutron emission spectroscopy at JET—Results from the magnetic proton recoil spectrometer (invited)

2001 ◽  
Vol 72 (1) ◽  
pp. 759-766 ◽  
Author(s):  
Göran Ericsson ◽  
L. Ballabio ◽  
S. Conroy ◽  
J. Frenje ◽  
H. Henriksson ◽  
...  
Keyword(s):  
Emission Spectroscopy ◽  
Neutron Emission ◽  
Proton Recoil

scholarly journals Neutrinos: Detection and Interpretation

1989 ◽  
Vol 8 ◽  
pp. 229-237
Author(s):  
L.N. Alexeyeva
Keyword(s):  
Liquid Scintillator ◽  
Theoretical Description ◽  
Time Profile ◽  
Individual Characteristics ◽  
Angular Distributions ◽  
Supernova 1987A ◽  
The Galaxy ◽  
Supernova Explosions ◽  
Scintillator Detectors ◽  
Water Cherenkov Detectors

AbstractObservations of the neutrino burst from Supernova 1987A by water Cherenkov detectors (KAMIOKANDE II, IMB) and liquid scintillator detectors (Baksan, Mont Blanc) are reviewed. It is shown that neutrino signal from SN 1987A was observed. There are 24 events in three detectors (KAMIOKANDE II, IMB, Baksan) recorded at 7:35 UT. The average properties of the signal (effective neutrino temperature, total energy of neutrino emission, burst duration) are consistent with the general theoretical description of supernova explosions. Special attention is concentrated on individual characteristics of the signals detected and the available discrepancies of the model estimates. Time profile of the neutrino burst, estimates of effective neutrino temperatures and total neutrino energies, angular distributions of the events are discussed. These properties point out, probably, a more compound picture of the phenomenon. The more detail analysis of the experimental data is needed and all possibilities must be at least considered. Based upon the Baksan observations, an upper limit of 0.35 core collapse in the Galaxy per year (90% C.L.) is shown.

New MPRu instrument for neutron emission spectroscopy at JET

2006 ◽  
Vol 77 (10) ◽  
pp. 10E717 ◽  
Author(s):  
H. Sjöstrand ◽  
L. Giacomelli ◽  
E. Andersson Sundén ◽  
S. Conroy ◽  
G. Ericsson ◽  
...  
Keyword(s):  
Emission Spectroscopy ◽  
Neutron Emission

Characterizations of BC501A and BC537 liquid scintillator detectors

2015 ◽  
Vol 104 ◽  
pp. 15-24 ◽  
Author(s):  
Jianguo Qin ◽  
Caifeng Lai ◽  
Bangjiao Ye ◽  
Rong Liu ◽  
Xinwei Zhang ◽  
...  
Keyword(s):  
Liquid Scintillator ◽  
Scintillator Detectors

scholarly journals Unambiguously Resolving the Potential Neutrino Magnetic Moment Signal at Large Liquid Scintillator Detectors

2021 ◽  
Vol 38 (11) ◽  
pp. 111401
Author(s):  
Ziping Ye ◽  
Feiyang Zhang ◽  
Donglian Xu ◽  
Jianglai Liu
Keyword(s):  
Magnetic Moment ◽  
Liquid Scintillator ◽  
Solar Neutrinos ◽  
Electromagnetic Properties ◽  
Beyond The Standard Model ◽  
Fundamental Physics ◽  
Neutrino Magnetic Moment ◽  
Solar Axion ◽  
Moment Interaction ◽  
Scintillator Detectors

Non-vanishing electromagnetic properties of neutrinos have been predicted by many theories beyond the Standard Model, and an enhanced neutrino magnetic moment can have profound implications for fundamental physics. The XENON1T experiment recently detected an excess of electron recoil events in the 1–7 keV energy range, which can be compatible with solar neutrino magnetic moment interaction at a most probable value of μν = 2.1 × 10−11 μ B. However, tritium backgrounds or solar axion interaction in this energy window are equally plausible causes. Upcoming multi-tonne noble liquid detectors will test these scenarios more in depth, but will continue to face similar ambiguity. We report a unique capability of future large liquid scintillator detectors to help resolve the potential neutrino magnetic moment scenario. With O(100) kton⋅year exposure of liquid scintillator to solar neutrinos, a sensitivity of μν < 10−11 μ B can be reached at an energy threshold greater than 40 keV, where no tritium or solar axion events but only neutrino magnetic moment signal is still present.

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