4.4 Article

MCNP modeling of a neutron generator and its shielding at Missouri University of Science and Technology

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2014.08.011

Keywords

Neutron generator shielding; D-D neutron generator; MCNP; Dose

Ask authors/readers for more resources

The shielding of a neutron generator producing fast neutrons should be sufficient to limit the dose rates to the prescribed values. A deuterium-deuterium neutron generator has been installed in the Nuclear Engineering Department at Missouri University of Science and Technology (Missouri S&T). The generator produces fast neutrons with an approximate energy of 2.5 MeV. The generator is currently shielded with different materials like lead, high-density polyethylene, and borated polyethylene. An MCNP transport simulation has been performed to estimate the dose rates at various places in and around the facility. The simulations incorporated the geometric and composition information of these shielding materials to determine neutron and photon dose rates at three central planes passing through the neutron source. Neutron and photon dose rate contour plots at these planes were provided using a MATLAB program. Furthermore, the maximum dose rates in the vicinity of the facility were used to estimate the annual limit for the generator's hours of operation. A successful operation of this generator will provide a convenient neutron source for basic and applied research at the Nuclear Engineering Department of Missouri S&T. (C) 2014 Elsevier B.V. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Instruments & Instrumentation

Adjoint acceleration of Monte Carlo simulations using SCALE: A radiation shielding evaluation of the neutron generator room at Missouri S&T

Manish K. Sharma, Ayodeji B. Alajo, Xin Liu

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2015)

Article Instruments & Instrumentation

Three-dimensional localization of low activity gamma-ray sources in real-time scenarios

Manish K. Sharma, Ayodeji B. Alajo, Hyoung K. Lee

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2016)

Article Instruments & Instrumentation

Integrated doses calculation in evacuation scenarios of the neutron generator facility at Missouri S&T

Manish K. Sharma, Ayodeji B. Alajo

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2016)

Article Instruments & Instrumentation

Triple pulse shape discrimination and capture-gated spectroscopy in a composite heterogeneous scintillator

M. Sharma, J. Nattress, K. Wilhelm, I. Jovanovic

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2017)

Article Instruments & Instrumentation

Evaluation of Eu:LiCAF for neutron detection utilizing SiPMs and portable electronics

Michael A. Ford, Buckley E. O'Day, John W. McClory, Manish K. Sharma, Areg Danagoulian

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2018)

Article Instruments & Instrumentation

Impact of neutron flux anisotropy from DT generator on radiation shielding effectiveness

M. Sharma, J. Nattress, I Jovanovic

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2018)

Article Instruments & Instrumentation

On the fabrication and characterization of heterogeneous composite neutron detectors with triple-pulse-shape-discrimination capability

Albert Foster, Amira Meddeb, Marc Wonders, Marek Flaska, Manish Sharma, Zoubeida Ounaies, Igor Jovanovic

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2020)

Article Nuclear Science & Technology

Ambient dose equivalent measurement with a CsI(Tl) based electronic personal dosimeter

Kyeongjin Park, Jinhwan Kim, Kyung Taek Lim, Junhyeok Kim, Hojong Chang, Hyunduk Kim, Manish Sharma, Gyuseong Cho

NUCLEAR ENGINEERING AND TECHNOLOGY (2019)

Article Nuclear Science & Technology

Pulse pileup correction method for gamma-ray spectroscopy in high radiation fields

Minju Lee, Daehee Lee, Eunbie Ko, Kyeongjin Park, Junhyuk Kim, Kilyoung Ko, Manish Sharma, Gyuseong Cho

NUCLEAR ENGINEERING AND TECHNOLOGY (2020)

Article Instruments & Instrumentation

Sensitivity and low-energy response of the Small Anode Germanium well detector with ceramic insert

Manish K. Sharma, Jonathan L. Burnett

Summary: A Small Anode Germanium (SAGe) detector installed recently at the Shallow Underground Laboratory (SUL) at Pacific Northwest National Laboratory (PNNL) demonstrates impeccable sensitivity in resolving low-energy complex spectra and providing reliable activity estimates by correcting for cascade summing effects. The unique electrode structure and short signal wire length in the detector ensure superior energy resolution compared to traditional well detectors. The detector is housed in an ultra-low background graded lead shield and equipped with a CosmicGuard (TM) cosmic veto background reduction system.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2021)

Article Environmental Sciences

Modeling of fission and activation products in molten salt reactors and their potential impact on the radionuclide monitoring stations of the International Monitoring System

Christine Johnson, Johnathan L. Slack, Manish K. Sharma, Cheslan K. Simpson, Jonathan L. Burnett

Summary: The study focused on the potential impact of Molten Salt Reactors (MSRs) emissions on the International Monitoring System (IMS) of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Simulations were conducted to predict IMS-relevant radionuclide production in four MSR designs under different scenarios, revealing that continuous reprocessing of fuel salt in MSRs could result in emissions that closely resemble those of a nuclear explosion.

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY (2021)

Article Environmental Sciences

Projected network performance for next generation aerosol monitoring systems

Paul W. Eslinger, Harry S. Miley, Jonathan L. Burnett, Lance S. Lidey, Jennifer M. Mendez, Brian T. Schrom, Manish K. Sharma

Summary: By improving the specifications of aerosol monitoring equipment, more samples per day can be collected and analyzed with the same minimum detectable concentrations. The authors simulated hypothetical releases of radioactive isotopes and found that next generation equipment will increase network resilience and improve source-location capability.

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY (2023)

Article Instruments & Instrumentation

Development and performance evaluation of a novel γ-γ coincidence analysis software

Manish K. Sharma, Jonathan L. Burnett

Summary: Processing large amounts of data is a challenge in trace-level radionuclide measurements, limiting the widespread use of coincidence techniques with multidimensional gamma spectrometers. This study presents a new gamma-gamma coincidence analysis software developed at Pacific Northwest National Laboratory, USA. The software utilizes advanced search techniques and Python libraries to quickly identify coincidence signatures in large data, providing a reference document for handling large data encountered in trace-level measurements.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2023)

Article Instruments & Instrumentation

An improved hybrid photon detector based on a SiC Schottky diode

Jinlu Ruan, Liang Chen, Pengxiao Xu, Yapeng Zhang, Xue Du, Hongqiao Yin, Shiyi He, Fangbao Wang, Xun Zhang, Xiaoping Ouyang

Summary: A new SiC detector with a faster time response was developed to improve the temporal response of SiC-HPMTs. The improved SiC-HPMT showed significantly enhanced temporal response compared to the previous SiC-HPMT, and it can accurately measure the time information of fast pulsed radiation fields.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

The Phase-2 upgrade of the CMS outer tracker

Kevin Nash

Summary: This article discusses the need for extensive upgrades of the LHC detectors, particularly the Outer Tracker, due to the demanding conditions and radiation of the High Luminosity LHC scenario. The design choices, technological approaches, and R&D activities for the Outer Tracker Phase-2 upgrade are highlighted.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

The LHCb RICH upgrade for the high luminosity LHC era

S. A. Wotton

Summary: The hadron particle identification provided by LHCb's RICH system is crucial for the success of the experiment, and it will continue to play a significant role in Upgrade II. To maintain the current excellent particle identification performance, substantial improvements in the precision of measuring the space and time coordinates of detected photons in the RICH and in the resolution of the reconstructed Cherenkov angle are required.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

The Resistive Cylindrical Chamber

R. Cardarelli, A. Rocchi, G. Aielli, P. Camarri, A. Di Ciaccio, L. Di Stante, B. Liberti, E. Pastori, L. Pizzimento, G. Proto

Summary: The Resistive Cylindrical Chamber (RCC) is a new generation of gaseous particle detectors that overcome the limitations of Resistive Plate Chambers (RPC) and expand their application range. By transitioning from planar to cylindrical geometry, while maintaining an almost planar electric field, the RCC achieves improved detection efficiency, increased gas pressure, and the possibility of using eco-friendly gases.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

An aerogel RICH detector for the next generation heavy-ion experiment at LHC

Giacomo Volpe

Summary: The ALICE collaboration is proposing a new apparatus, ALICE 3, to investigate the Quark Gluon Plasma (QGP) properties. In this context, conceptual studies for the development of a RICH detector for ALICE 3 are ongoing. The proposed baseline layout is a proximity-focusing RICH, using aerogel as Cherenkov radiator and Silicon Photomultipliers for photon detection. The detector specifications and performance obtained by Monte Carlo simulation are presented, along with the R&D challenges related to the design.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

A practical method of evaluating work functions

M. G. Mazarakis, E. Jongewaard, J. Ellsworth

Summary: This report presents experimental data and a step-by-step technique for evaluating the work functions of thermionic cathodes. The experiments were conducted using small-sized thermionic cathodes provided by Spectra-Mat corporation. The cathode electron current emission work function is emphasized as a crucial parameter for selecting cathodes in various applications.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

Sub-millimeter resolution SiPM-based neutron anger camera

M. Loyd, A. Khaplanov, V. Sedov, J. Beal, T. Visscher, C. Donahue, C. Montcalm, G. Warren, R. Butz, C. Boone, C. Hart, R. Riedel, Y. Diawara

Summary: Thermal and cold neutron beamlines require detector systems with high efficiency, large active area, and good spatial resolution. This study presents a new design of Anger camera using silicon photomultipliers (SiPMs) instead of photomultiplier tubes (PMTs), offering better resolution, less distortion, and more compactness. The use of SiPMs also enables the camera to be used in strong magnetic fields, providing additional experimental capabilities.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

Vertical time-of-flight spectroscopy of ultracold neutrons

Thomas Neulinger, Hanno Filter, Oliver Zimmer

Summary: This paper describes the mathematical foundation for analyzing vertical time-of-flight (TOF) measurements using ultracold neutrons (UCN). It enables the spectroscopy of UCN with kinetic energies below the neutron optical potential of the detector entrance window. The paper provides general treatment methods and transformation rules for converting vertical TOF spectra into other spectra of interest.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

A comparative study on full-energy peak efficiency calibration methods for HPGe detector: Virtual point detector, curve fitting, and machine learning models

Huynh Dinh Chuong, Nguyen Huynh Duy Khang, Le Thi Ngoc Trang, Nguyen Thi Truc Linh, Truong Thanh Sang, Nguyen Thanh Dat, Hoang Duc Tam

Summary: This paper presents a comparative study of three models, including virtual point detector (VPD), curve fitting (CF), and machine learning (ML), in determining the full-energy peak efficiency (FEPE) of HPGe detector. The study found that the ML model outperforms VPD and CF models in terms of accuracy.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

Partially depleted operation of 250 μm-thick silicon carbide neutron detectors

M. H. Kushoro, M. Angelone, D. Bozzi, G. Gorini, F. La Via, E. Perelli Cippo, M. Pillon, M. Tardocchi, M. Rebai

Summary: This paper presents the characterization of a series of SiC detectors operated with partial polarization, achieving excellent energy resolution and detection characteristics for both alpha particles and neutrons. The results demonstrate the potential of SiC detectors for fast neutron detection in fusion experiments. The limitations and challenges for manufacturing thick SiCs in the future are also discussed.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

Characterization of LAPPD timing at CERN PS testbeam

Deb Sankar Bhattacharya, Andrea Bressan, Chandradoy Chatterjee, Silvia Dalla Torre, Mauro Gregori, Alexander Kiselev, Stefano Levorato, Anna Martin, Saverio Minutoli, Mikhail Osipenko, Richa Rai, Marco Ripani, Fulvio Tessarotto, Triloki Triloki

Summary: In this article, we report on the measurement of the time resolution of an LAPPD prototype using Cherenkov radiation emitted by high energy hadrons. Our approach has demonstrated the capability of measuring time resolutions as fine as 25-30 ps. The measured time resolution for single photoelectrons is about 80 ps r.m.s.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

Fabrication and characterization of self-supporting and backed 107Ag targets for lifetime measurements using RDM and DSAM

Bharti Rohila, S. R. Abhilash, Diwanshu, Chetan Sharma, Devinder Mehta, Ashok Kumar

Summary: Self-supporting and Au backed Ag-107 targets have been fabricated using a combination of cold rolling and e-beam melting technique. The method is efficient, resulting in targets without significant material loss or major contamination. Various techniques have been used for thickness measurements and characterizations, and one of the fabricated targets has been successfully used in a nuclear physics experiment.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

Reduction of light output of plastic scintillator tiles during irradiation at cold temperatures and in low-oxygen environments

B. Kronheim, A. Belloni, T. K. Edberg, S. C. Eno, C. Howe, C. Palmer, C. Papageorgakis, M. Paranjpe, S. Sriram

Summary: This paper presents measurements of the relative decrease of light output during irradiation of small plastic scintillator tiles read out by silicon photomultipliers. The study found substantial temporary damage during low-temperature irradiation, regardless of oxygen concentration and wrapping material. The wrapping material had an impact on the relative light loss, with the 3M(TM) Enhanced Specular Reflector Film showing the largest loss. The light loss was less at warmer temperatures and similar to that in standard atmosphere with 3% oxygen concentration. Evidence of a plateau in the radical density was seen for the data at 0 degrees C.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

Atomistic modelling of electron propagation and radiation emission in oriented bent ultra-thin Si and Ge crystals

V. V. Haurylavets, V. K. Ivanov, A. V. Korol, A. V. Solov'yov

Summary: Computational modeling of high-energy electron passage through crystalline media is conducted using relativistic molecular dynamics. The results show good agreement with experimental data, demonstrating the accuracy of the simulations. Minor discrepancies between theory and experiment are discussed.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)

Article Instruments & Instrumentation

Eco-friendly Resistive Plate Chambers for detectors in future HEP applications

Luca Quaglia, R. Cardarelli, B. Liberti, E. Pastori, G. Proto, L. Pizzimento, A. Rocchi, G. Aielli, P. Camarri, A. Di Ciacco, L. Di Stante, R. Santonico, D. Boscherini, A. Bruni, L. Massa, A. Polini, M. Romano, L. Benussi, S. Bianco, D. Piccolo, G. Saviano, M. Abbrescia, L. Congedo, M. De Serio, G. Galati, G. Pugliese, S. Simone, D. Ramos, P. Salvini, A. Samalan, M. Tytgat, N. Zaganidis, J. Eysermans, A. Ferretti, M. Gagliardi, L. Terlizzi, E. Vercellin, P. Dupieux, B. Joly, S. P. Manen, R. Guida, B. Mandelli, G. Rigoletti, M. Barroso, M. C. Arena, A. Pastore, R. Aly, M. Verzeroli, S. Buontempo

Summary: Resistive Plate Chamber detectors are widely used in current High Energy Physics experiments. However, efforts are being made to find eco-friendly gas alternatives to Tetrafluoroethane. The RPC EcoGas@GIF++ collaboration aims to improve RPC technology, evaluate the performance of RPCs with eco-friendly gas mixtures, and conduct aging tests.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2024)