scholarly journals Synergy SKA - CTA: Supernova remnants as cosmic accelerators

2017 ◽  
Vol 12 (S331) ◽  
pp. 345-350
Author(s):  
Adriano Ingallinera ◽  
Corrado Trigilio ◽  
Grazia Umana ◽  
Paolo Leto ◽  
Carla Buemi ◽  
...  
Keyword(s):  
Supernova Remnants ◽  
High Energy Physics ◽  
High Efficiency ◽  
Gamma Ray ◽  
High Energy ◽  
Good Test ◽  
Wide Range ◽  
Tight Connection ◽  
Preparation Work ◽  
Energy Physics

AbstractSupernova remnants (SNRs) are one of the most important sites where particles are accelerated with high efficiency and in a wide range of energies, becoming an important component of cosmic rays. A good test for this hypothesis will be possible using the data collected by next-generation radio and gamma-ray observatories, like the Square Kilometre Array (SKA) and the Cherenkov Telescope Array (CTA). Radio emission is fundamental to explore the SNR environment and to shed light on the physical processes involved in particle acceleration, providing direct links to high-energy physics. Two cases of SNRs recently studied in radio are presented, showing the importance of high-resolution radio images. An overview of SKA and its precursors is given with our ongoing preparation work. In particular, we present the EMU survey and the pathfinder project SCORPIO. Finally a direct view of the tight connection between SKA and CTA future studies of SNRs is provided.

scholarly journals Siberian Snakes, Figure-8 and Spin Transparency Techniques for High Precision Experiments with Polarized Hadron Beams in Colliders

Symmetry ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 398
Author(s):  
Yaroslav S. Derbenev ◽  
Yury N. Filatov ◽  
Anatoliy M. Kondratenko ◽  
Mikhail A. Kondratenko ◽  
Vasiliy S. Morozov
Keyword(s):  
High Precision ◽  
High Energy Physics ◽  
High Efficiency ◽  
High Energy ◽  
Polarized Beams ◽  
Polarization Control ◽  
Spin Polarized ◽  
High Flexibility ◽  
Spin Flips ◽  
Energy Physics

We present a review of the possibilities to conduct experiments of high efficiency in the nuclear and high energy physics with spin-polarized beams in a collider complex, configuration of which includes Siberian snakes or figure-8 collider ring. Special attention is given to the recently elicited advantageous possibility to conduct high precision experiments in a regime of the spin transparency (ST) when the design global spin tune is close to zero. In this regime, the polarization control is realized by use of spin navigators (SN), which are compact special insertions of magnets dedicated to a high flexibility spin manipulation including frequent spin flips.

scholarly journals High-energy emission from transients

2013 ◽  
Vol 371 (1992) ◽  
pp. 20120279 ◽  
Author(s):  
J. A. Hinton ◽  
R. L. C. Starling
Keyword(s):  
Particle Acceleration ◽  
Time Scales ◽  
Supernova Remnants ◽  
Gamma Ray ◽  
Experimental Situation ◽  
High Energy ◽  
Galactic Cosmic Rays ◽  
Time Variable ◽  
Wide Range ◽  
Cosmic Explosions

Cosmic explosions dissipate energy into their surroundings on a very wide range of time scales: producing shock waves and associated particle acceleration. The historical culprits for the acceleration of the bulk of Galactic cosmic rays are supernova remnants: explosions on approximately 10 4 year time scales. Increasingly, however, time-variable emission points to rapid and efficient particle acceleration in a range of different astrophysical systems. Gamma-ray bursts have the shortest time scales, with inferred bulk Lorentz factors of approximately 1000 and photons emitted beyond 100 GeV, but active galaxies, pulsar wind nebulae and colliding stellar winds are all now associated with time-variable emission at approximately teraelectron volt energies. Cosmic photons and neutrinos at these energies offer a powerful probe of the underlying physical mechanisms of cosmic explosions, and a tool for exploring fundamental physics with these systems. Here, we discuss the motivations for high-energy observations of transients, the current experimental situation, and the prospects for the next decade, with particular reference to the major next-generation high-energy observatory, the Cherenkov Telescope Array.

Investigation of parameters of new MAPD-3NM silicon photomultipliers

2022 ◽  
Vol 17 (01) ◽  
pp. C01001
Author(s):  
F. Ahmadov ◽  
G. Ahmadov ◽  
R. Akbarov ◽  
A. Aktag ◽  
E. Budak ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Gamma Ray ◽  
Detection Efficiency ◽  
High Energy ◽  
Efficiency Gain ◽  
Space Application ◽  
Silicon Photomultipliers ◽  
Photon Detection ◽  
Photon Detection Efficiency ◽  
Energy Physics

Abstract In the presented work, the parameters of a new MAPD-3NM-II photodiode with buried pixel structure manufactured in cooperation with Zecotek Company are investigated. The photon detection efficiency, gain, capacitance and gamma-ray detection performance of photodiodes are studied. The SPECTRIG MAPD is used to measure the parameters of the MAPD-3NM-II and scintillation detector based on it. The obtained results show that the newly developed MAPD-3NM-II photodiode outperforms its counterparts in most parameters and it can be successfully applied in space application, medicine, high-energy physics and security.

scholarly journals γ-Ray-Induced Proton Generation in Polymers: Quantifiable Single-Component Fluorescent Ratiometric Chemosensor

2019 ◽  
Author(s):  
Bin Pei ◽  
Biao Chen ◽  
Hao Su ◽  
Wenhuan Huang ◽  
Hui Miao ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Space Exploration ◽  
Radiation Detection ◽  
High Energy ◽  
Generation Process ◽  
Ratiometric Fluorescence ◽  
Electron Counting ◽  
Wide Range ◽  
Proton Generation ◽  
Energy Physics

<p>Detection of g-rays is of vital significance in various areas such as high-energy physics, nuclear medicine, national security and space exploration. However, most current spectrometry methods are typically based on ionization effects which are limited to electron counting techniques. Herein, we report an alternative, quantifiable g-ray chemosensor from a g-ray-induced proton generation process more sensitive to poly (methyl methacrylate) (PMMA) and polyvinyl chloride (PVC) by surveying a series of commercially available polymers. Accordingly, a pH-sensitive yet g-ray-stable fluorophore is designed, resulting in dramatic fluorescence shift from the blue (<i>l</i><sub>em</sub> = 460~480 nm) to the red region (<i>l</i><sub>em</sub> = 570~620 nm) after subjecting it to g-irradiation in PMMA or PVC films. A linear response of ratiometric fluorescence intensity (I<sub>red</sub>/I<sub>blue</sub>) to g-ray dosage in a wide range (80-4060 Gy) was established, which can be used as a visual dosimeter. Meanwhile, the discovery also opens new doors for proton-based radiation detection and chemistry. </p>

scholarly journals Unconventional Applications of Superconducting Nanowire Single Photon Detectors

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1198
Author(s):  
Tomas Polakovic ◽  
Whitney Armstrong ◽  
Goran Karapetrov ◽  
Zein-Eddine Meziani ◽  
Valentine Novosad
Keyword(s):  
High Energy Physics ◽  
High Efficiency ◽  
Single Photon ◽  
High Energy ◽  
Particle Detection ◽  
Photon Detectors ◽  
Detection Rates ◽  
Single Photon Detectors ◽  
Superconducting Nanowire ◽  
Energy Physics

Superconducting nanowire single photon detectors are becoming a dominant technology in quantum optics and quantum communication, primarily because of their low timing jitter and capability to detect individual low-energy photons with high quantum efficiencies. However, other desirable characteristics, such as high detection rates, operation in cryogenic and high magnetic field environments, or high-efficiency detection of charged particles, are underrepresented in literature, potentially leading to a lack of interest in other fields that might benefit from this technology. We review the progress in use of superconducting nanowire technology in photon and particle detection outside of the usual areas of physics, with emphasis on the potential use in ongoing and future experiments in nuclear and high energy physics.

Study on TlBr Radioactive Detector

2017 ◽  
Author(s):  
He Li-xia ◽  
Hao Xiao-yong ◽  
He Gao-kui
Keyword(s):  
Room Temperature ◽  
High Energy Physics ◽  
Gamma Ray ◽  
Detection Efficiency ◽  
Nuclear Material ◽  
High Energy ◽  
High Detection ◽  
High Detection Efficiency ◽  
Excellent Energy Resolution ◽  
Energy Physics

TlBr is a kind of semiconductor material. Due to its promising physical properties and can be used at room temperature, it is continually studied as X and gamma ray detectors candidate material. Both of its atomic number and density are high. It also has large band-gap (B = 2.68eV) and low ionization energy. TlBr device exhibits high detection efficiency and excellent energy resolution. It can be easily fabricated or compacted in small housing. So it is a reasonable selection in the fields of nuclear material inspection and safeguards property, national security, spatial and high energy physics researches. The paper investigates the TlBr radioactive detector development and fabrication procedures. The processing detail information and signals collection are emphasized in different section. The prototype detectors were irradiated by Am-241 and corresponding spectrum was obtained. The photoelectric peak at 59.5keV is distinguished visible and the best resolution at 59.5keV is 4.15keV (7%).

scholarly journals γ-Ray-Induced Proton Generation in Polymers: Quantifiable Single-Component Fluorescent Ratiometric Chemosensor

2019 ◽  
Author(s):  
Bin Pei ◽  
Biao Chen ◽  
Hao Su ◽  
Wenhuan Huang ◽  
Hui Miao ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Space Exploration ◽  
Radiation Detection ◽  
High Energy ◽  
Generation Process ◽  
Ratiometric Fluorescence ◽  
Electron Counting ◽  
Wide Range ◽  
Proton Generation ◽  
Energy Physics

<p>Detection of g-rays is of vital significance in various areas such as high-energy physics, nuclear medicine, national security and space exploration. However, most current spectrometry methods are typically based on ionization effects which are limited to electron counting techniques. Herein, we report an alternative, quantifiable g-ray chemosensor from a g-ray-induced proton generation process more sensitive to poly (methyl methacrylate) (PMMA) and polyvinyl chloride (PVC) by surveying a series of commercially available polymers. Accordingly, a pH-sensitive yet g-ray-stable fluorophore is designed, resulting in dramatic fluorescence shift from the blue (<i>l</i><sub>em</sub> = 460~480 nm) to the red region (<i>l</i><sub>em</sub> = 570~620 nm) after subjecting it to g-irradiation in PMMA or PVC films. A linear response of ratiometric fluorescence intensity (I<sub>red</sub>/I<sub>blue</sub>) to g-ray dosage in a wide range (80-4060 Gy) was established, which can be used as a visual dosimeter. Meanwhile, the discovery also opens new doors for proton-based radiation detection and chemistry. </p>

scholarly journals Time Resolution Measurements on SiPM for High Energy Physics Experiments

2020 ◽  
Vol 7 (1) ◽  
pp. 29-33
Author(s):  
L.M. Montano ◽  
M. Fontaine
Keyword(s):  
Time Resolution ◽  
High Energy Physics ◽  
Detection Efficiency ◽  
Single Photon ◽  
Detection System ◽  
Radiation Detector ◽  
High Energy ◽  
New Physics ◽  
Wide Range ◽  
Energy Physics

Scintillator detector have been used in a wide range of experiments in different areas: Nuclear and High Energy Physics, Medicine, and Radiation Security among others. It is common to use scintillator counters coupled to Photomultiplier Tubes (PMT) as a read out detectors. Nowadays, there has been a great interest in using the Silicon Photomultipliers (PMSi) as a replacement for PMT's due to their high photon detection efficiency (PDE) and their high single photon time resolution (SPTR). The fast the signal is detected, the whole detection system will be useful to search for new physics. PMSi is also known to have a good compactness, magnetic field resistance and low cost. In our lab we are measuring the time resolution of two different models of PMS in order to build a fast radiation detector system.

Application of strip electrode in single-gap RPC

2021 ◽  
Vol 16 (11) ◽  
pp. P11037
Author(s):  
Q. Li ◽  
X. Xie ◽  
Y. Sun ◽  
J. Ge ◽  
Z. Xue
Keyword(s):  
High Energy Physics ◽  
High Efficiency ◽  
High Energy ◽  
Good Time ◽  
Strip Electrode ◽  
Detector Structure ◽  
Physics Experiments ◽  
Good Time Resolution ◽  
Trigger Detector ◽  
Energy Physics

Abstract The Resistive Plate Chamber (RPC) is widely used in High Energy Physics experiments as trigger detector to take advantage of its good time resolution and high efficiency. A conventional RPC detector consists of one gas gap covered by graphite layers on both side. The working voltage is applied on these layers and the charge of avalanche dissipates through them. In this paper, a design which removes the graphite layers and uses the readout strips as the electrode is applied to simplify the structure of this detector. This design eliminates the challenge of controlling the uniformity of the graphite layer and simplifies the detector structure.

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