Article
Radiology, Nuclear Medicine & Medical Imaging
Li Chen, Xu Ji, Zhe Wang, Yang Chen
Summary: This study performed an error analysis of the material-decomposition-based Z(eff) quantification method and proposed a coefficient calibration-in-groups method to improve the modeling accuracy and reduce the Z(eff) quantification error. The proposed method, which calibrated the coefficients in different groups, showed the lowest average errors compared with the standard method using a single empirical m value. These findings reveal the importance of accurate coefficient calibration for improved Z(eff) quantification.
Article
Chemistry, Inorganic & Nuclear
Siti Hajar Zuber, Nurul Ab Aziz Hashikin, Mohd Fahmi Mohd Yusof, Mohd Zahri Abdul Aziz, Rokiah Hashim
Summary: The experimental particleboards made from Rhizophora spp. showed potential as phantom material for human soft tissue, with attenuation properties similar to water. The particleboards bonded with different percentages of lignin and soy flour exhibited good attenuation characteristics and could be suitable for radiation studies.
APPLIED RADIATION AND ISOTOPES
(2021)
Article
Chemistry, Physical
Izdihar Kamal, Muhammad Khalis Abdul Karim, Hanif Haspi Harun, Hairil Rashmizal Abdul Razak, Low Yiin Jian, Josephine Liew Ying Chyi, Mohd Mustafa Awang Kechik
Summary: Chemical compounds like PDMS and HS are widely used in medical phantom fabrication due to their tissue-like properties. This study aimed to evaluate the radiation attenuation properties of different PDMS samples and found that pure PDMS has the highest mass attenuation coefficient. Samples with water and HS significantly influence radiation attenuation properties, with the S1 sample containing 80% PDMS and 20% water being suitable for simulating kidney tissues.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
Behzad Koohi, Rahim Khabaz
Summary: This study investigates the backscattering distribution and saturation values of various materials in electron therapy using the Monte Carlo code MCNPX. The results show that the probability of electron backscattering is strongly dependent on the effective atomic number and energy. Equipment and accessories used in electron radiotherapy LINAC should be made of low atomic number material, and a layer of low atomic number material should be used for protection.
Article
Multidisciplinary Sciences
Daniel Akwei Addo, Elsie Effah Kaufmann, Samuel Nii Tagoe, Augustine Kwame Kyere
Summary: In this study, GafChromic EBT2 film was used to measure the skin and entrance doses of a teletherapy machine. The measurements were significantly affected by larger field sizes and gantry angles, but the film provided accurate estimations of the entrance dose.
Article
Materials Science, Multidisciplinary
Doniyor Jumanazarov, Jakeoung Koo, Jan Kehres, Henning F. Poulsen, Ulrik L. Olsen, Mihai Iovea
Summary: The development of energy resolving photon counting detectors (PCD) has allowed for spectral X-ray Computed Tomography (CT) to extract the energy dependence of a material's linear attenuation coefficient (LAC). However, the poor image reconstruction quality in security screening may hinder the application of spectral CT. This study proposes an accurate reconstruction method using L(infinity)-norm-based vectorial total variation (L-infinity-VTV) regularization to improve the image reconstruction quality for material identification in rapid scanning scenarios.
MATERIALS CHARACTERIZATION
(2022)
Article
Multidisciplinary Sciences
Kyo-Tae Kim, Yona Choi, Gyu-Seok Cho, Won-Il Jang, Kwang-Mo Yang, Soon-Sung Lee, Jungbae Bahng
Summary: This study verified some confusing points about electron film dosimetry using white polystyrene suggested by international protocols. The results showed that white polystyrene has similar water-equivalent characteristics as presented in the international protocols.
Article
Multidisciplinary Sciences
Daniel Akwei Addo, Elsie Effah Kaufmann, Samuel Nii Tagoe, Augustine Kwame Kyere
Summary: In vivo dosimetry is a quality assurance tool used to measure the absorbed dose in patients. This study examined the behavior of GafChromic EBT2 film in dose measurements using a tissue-equivalent water phantom. The results showed that the film measurements were affected by field size and gantry angle, and the use of film for entrance dose estimation was highly accurate.
Article
Astronomy & Astrophysics
T. Kallman, M. Bautista, J. Deprince, J. A. Garcia, C. Mendoza, A. Ogorzalek, P. Palmeri, P. Quinet
Summary: Observations of relativistically broadened and redshifted iron K lines from accretion powered objects suggest the presence of high gas densities near the central engine to maintain partial ionization, with important stimulated processes potentially influencing atomic rates. Current models typically neglect stimulated processes and focus on low density regimes, while new calculations aim to provide physically appropriate models at high densities consistent with line-emitting gas near compact objects.
ASTROPHYSICAL JOURNAL
(2021)
Article
Chemistry, Physical
Mohammed J. R. Aldhuhaibat, Maitham S. Amana, Najwa J. Jubier, A. A. Salim
Summary: The research evaluated the performance of different materials in absorbing gamma rays, and found that epoxy nanocomposites are effective in shielding gamma radiation.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Polymer Science
Izdihar Kamal, Hairil Rashmizal Abdul Razak, Muhammad Khalis Abdul Karim, Syamsiah Mashohor, Josephine Ying Chyi Liew, Yiin Jian Low, Nur Atiqah Zaaba, Mazlan Norkhairunnisa, Nur Athirah Syima Mohd Rafi
Summary: This study evaluated the influence of hydrogen silicone and water on blended Polydimethylsiloxane samples, and identified the best material to simulate kidney tissue. The findings suggest that samples with a certain proportion of hydrogen silicone and water are more suitable for simulating human kidney.
Article
Chemistry, Physical
Norlaili A. Kabir, Franca Oyiwoja Okoh, Mohd Fahmi Mohd Yusof
Summary: This study explores methods to fabricate and characterize mammography phantoms, analyzing elemental composition, effective atomic number, electron density, attenuation coefficient, and CT number to show similarity with water and breast tissue. Various analytical techniques and software were used to provide effective strategies for phantom preparation.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Chemistry, Physical
Iskender Akkurt, Ali Alomari, Meltem Y. Imamoglu, Ismail Ekmekci
Summary: This research focuses on oxyfluoride glasses, which have been the main interest for many researchers for over a decade. The importance of glasses in various applications, especially in radiation shielding for human health, is the reason for this interest. The study investigates the gamma ray shielding characteristics of glasses with the formulation (20-x)CaF2-xAl2O3-20Bi2O3-59B2O3-CuO (x = 3,6,9,12,15) by obtaining linear attenuation coefficients (LAC), effective atomic number (Zeff), and effective electron density (Neff) using Phy-X/PSD code.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Physical
Okkyun Seo, Jaemyung Kim, Jiayi Tang, L. S. R. Kumara, Koji Kimoto, Kazushi Miki, Akifumi Matsuda, Mamoru Yoshimoto, Osami Sakata
Summary: This research focuses on the influence of atomic arrangement on the electrical and catalytic properties of oxide thin films. The atomic arrangement of LiNiO2 thin films was investigated by uniaxial compression and annealing at 600℃ on sapphire substrates. Thin films with a rock-salt structure were grown using pulsed laser deposition method at room temperature. It was observed that the as-grown thin films transformed from a rock-salt to a layered structure after uniaxial compression at 600℃, and the layer thickness of the latter structure increased with increasing uniaxial compression pressure. Uniaxial compression provides a useful tool for oxide thin film research, contributing to the development of new functional oxide materials and adjustment of the atomic ordering of cation materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Oncology
Yiwei Yang, Jianxin Wang, Feng Gao, Zhen Liu, Tangzhi Dai, Haowen Zhang, Hongyu Zhu, Tingting Wang, Dexin Xiao, Kui Zhou, Zheng Zhou, Dai Wu, Xiaobo Du, Sen Bai
Summary: This paper provides a comprehensive description of the current status of PARTER, which is the first experimental FLASH platform utilizing megavoltage X-rays. It showcases the reliable performance and stability of the dosimeters and monitors used in PARTER, as well as the satisfactory dose distribution and characteristics of the FLASH X-rays. The platform effectively meets the requirements of preclinical research on megavoltage X-ray FLASH and undergoes continuous upgrades.
RADIOTHERAPY AND ONCOLOGY
(2024)
Article
Biology
Mehmet Buyukyildiz, Murat Kurudirek
INTERNATIONAL JOURNAL OF RADIATION BIOLOGY
(2018)
Article
Chemistry, Physical
M. Kurudirek, N. Chutithanapanon, R. Laopaiboon, C. Yenchai, C. Bootjomchai
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Chemistry, Physical
Erdem Sakar, Mehmet Buyukyildlz, Bunyamin Alim, Betul Ceviz Sakar, Murat Kurudirek
RADIATION PHYSICS AND CHEMISTRY
(2019)
Article
Biology
M. Kurudirek, Y. Kurucu
INTERNATIONAL JOURNAL OF RADIATION BIOLOGY
(2019)
Article
Materials Science, Ceramics
M. Celikbilek Ersundu, A. E. Ersundu, N. Gedikoglu, E. Sakar, M. Buyukyildiz, M. Kurudirek
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2019)
Article
Materials Science, Ceramics
Y. S. Alajerami, D. Drabold, M. H. A. Mhareb, Katherine Leslee A. Cimatu, Gang Chen, M. Kurudirek
CERAMICS INTERNATIONAL
(2020)
Article
Biology
O. F. Ozpolat, B. Alim, E. Sakar, M. Buyukyildiz, M. Kurudirek
RADIATION AND ENVIRONMENTAL BIOPHYSICS
(2020)
Article
Chemistry, Physical
Erdem Sakar, Ozgur Firat Ozpolat, Bunyamin Alim, M. I. Sayyed, Murat Kurudirek
RADIATION PHYSICS AND CHEMISTRY
(2020)
Article
Spectroscopy
Parminder Kaur, K. J. Singh, Murat Kurudirek, Sonika Thakur
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2019)
Article
Nuclear Science & Technology
M. Kurudirek, Y. Kurucu
RADIATION EFFECTS AND DEFECTS IN SOLIDS
(2020)
Article
Materials Science, Ceramics
Parminder Kaur, K. J. Singh, Sonika Thakur, Murat Kurudirek
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2020)
Article
Chemistry, Multidisciplinary
Parminder Kaur, K. J. Singh, Sonika Thakur, Murat Kurudirek, Mustafa Mohammad Rafiei
Summary: The current study investigates the effect of gradual addition of Bi2O3 in Li2O-Sb2O3-B2O3 glass system, confirming changes in glass structure and properties through various analytical techniques. The addition of Bi2O3 resulted in increased sample density and durability, with simulated analysis showing improved γ-ray shielding properties.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Physical
Mustafa Mohammad Rafiei, Hossein Tavakoli-Anbaran, Murat Kurudirek
RADIATION PHYSICS AND CHEMISTRY
(2020)
Article
Instruments & Instrumentation
Mm Rafiei, S. Parsaei, M. Kurudirek
JOURNAL OF INSTRUMENTATION
(2020)
Proceedings Paper
Physics, Applied
Parminder Kaur, K. J. Singh, Murat Kurudirek, Sonika Thakur
DAE SOLID STATE PHYSICS SYMPOSIUM 2018
(2019)
Article
Instruments & Instrumentation
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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)