High Energy Particle Spectrometer for ESA Lagrange mission

2021 ◽  
Author(s):  
Wojtek Hajdas ◽  
Radoslaw Marcinkowski ◽  
Hualin Xiao ◽  
Ronny Kramert
Keyword(s):  
Solar Energetic Particle ◽  
Heavy Ion ◽  
High Energy ◽  
High Energy Particle ◽  
Energy Particle ◽  
Detection Systems ◽  
Parker Spiral ◽  
Final Design ◽  
Radiation Tolerant

<p>The LGR High Energy Particle Spectrometer HEPS for the ESA Lagrange mission belongs to the satellite in-situ instrument suite. The satellite will be placed at the Lagrange point L5 for space weather measurements and real-time observations and alerts. The HEPS instrument with its six detector subsystems will enable the detecting of electrons, protons, and heavy ions at high flux conditions during Solar Energetic Particle Events. The electron and proton detection systems rely on standard telescope techniques covering energy ranges from 100 keV to 15 MeV and 3 MeV to 1 GeV respectively. Two sets of telescopes will be installed facing opposite directions along the Parker spiral. Additional detector with a wide angular range will enable measurements of angular distributions of particles traveling towards the satellite from the Sun. The HEPS heavy-ion telescope HIT represents a new design utilizing a set of scintillators and SiPM light converters. HIT electronics is equipped with a dedicated radiation-tolerant ASIC optimized for low power use and fast signal detections. The first model of HIT was developed and verified for spectroscopic measurements and ion identification. We report on test measurements as well as Monte Carlo simulations of the whole instrument. Results will be discussed and implications on the final design of the instrument provided.</p>

scholarly journals Safety Engineering for the Relativistic Heavy Ion Collider at the Brookhaven National Laboratory

1999 ◽  
Author(s):  
Stephen V. Musolino ◽  
Steven F. Kane ◽  
Joseph W. Levesque
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Particle Accelerator ◽  
Cryogenic System ◽  
High Energy Particle ◽  
Particle Accelerators ◽  
Safety Engineering ◽  
Relativistic Heavy Ion Collider ◽  
Energy Particle ◽  
Experimental Apparatus

Abstract The Relativistic Heavy Ion Collider (RHIC) is a high energy particle accelerator built to study basic nuclear physics. It consists of two counter-rotating beams of fully stripped gold ions that are accelerated in two rings to an energy of 100 GeV/nucleon. The rings consist of a circular lattice of superconducting magnets, 3.8 km in circumference. The beams can be stored for a period of five to ten hours and brought into collision for experiments during that time. The first major physics objective when the facility goes into operation is to recreate a state of matter, the quark-gluon plasma, that has been predicted to have existed at a short time after the creation of the universe. There are only a few other high energy particle accelerators like RHIC in the world. Each one is unique in design and contains systems and hazards that are not commonly found in general industry. Therefore, the designers of the machine do not always have consensus design standards and regulatory guidance available to establish the engineering parameters for safety. Some of the areas where standards are not available relate to the cryogenic system, containment of large volumes of flammable gas in fragile vessels in the experimental apparatus and mitigation of a Design Basis Accident with a stored particle beam. The ASME Code requires Charpy testing of welds at cryogenic temperature, but testing at 4 K is nearly impossible to conduct. Engineered welds were used to provide an equivalent level of safety. A cryogenic system is a process system. The RHIC system was designed first by selecting a safe operating mode, then analyzing to ensure this mode was preserved. Cryogenic systems have unique processes, and the safe mode will surprise most process engineers. The experimentalists require detectors to be designed to meet the need of the physics objectives, but the application of standard construction techniques would make research mission impossible. Unique but equivalent safety engineering must be determined. The rules promulgated in the Code of Federal Regulations under the Atomic Energy Act do not cover prompt radiation from accelerators, nor are there any State regulations that govern the design and operation of a large superconducting collider. Special design criteria for prompt radiation were developed to provide guidance for the design of radiation shielding.

Recent results from the imagery of Juno’s Stellar Reference Unit

2020 ◽  
Author(s):  
Heidi Becker ◽  
James Alexander ◽  
Sushil Atreya ◽  
Scott Bolton ◽  
Martin Brennan ◽  
...  
Keyword(s):  
Satellite Images ◽  
Attitude Determination ◽  
High Energy ◽  
High Energy Particle ◽  
Energy Particle ◽  
Low Light ◽  
Jovian System ◽  
Dust Ring ◽  
Juno Mission

<p>The Juno Mission has recast its spacecraft engineering star camera as a visible wavelength science imager. Developed and primarily used to support onboard attitude determination, Juno’s Stellar Reference Unit (SRU) has been put to use as an in situ high energy particle detector for profiling Jupiter’s radiation belts and as a low light sensitive camera for exploring multiple phenomena and features of the Jovian system. Juno’s unprecedented polar orbit and closest approach of ~4000 km have yielded high resolution SRU imagery of Jupiter’s lightning and aurorae from as little as 50,000 km from the 1 bar level and unique Jovian dust ring and satellite images. We will present recent SRU results and discuss the implications for Jupiter’s atmosphere that stem from the SRU lightning observations.</p>

scholarly journals Montecarlo simulation of the High Energy Particle Detector on board the satellite CSES

2019 ◽  
Vol 209 ◽  
pp. 01050
Author(s):  
Luca Carfora
Keyword(s):  
Monte Carlo ◽  
Solar Energetic Particle ◽  
High Energy ◽  
Maximum Energy ◽  
High Energy Particle ◽  
Particle Detector ◽  
Energy Particle ◽  
Satellite Mission ◽  
Detector Performance ◽  
Terrestrial Environment

The High-Energy Particle Detector (HEPD) is an instrument devoted to the measurement of cosmic particles from few MeV up to hundreds of MeV. The HEPD will contribute to the China Seismo-Electromagnetic Satellite mission by measuring the precipitation of trapped particles and by studying the solar-terrestrial environment especially during impulsive events like coronal mass ejections and solar energetic particle emissions. A Monte Carlo software was realized to study the performance of HEPD, such as its particle discrimination capability, the energy threshold for trigger and the maximum energy detectable in full containment. This contribution reports the main features of the HEPD Monte Carlo simulation and some results of the detector performance based on it. A comparison with beam tests was carried out, showing a good agreement with the simulation.

ELECTROMAGNETIC DETECTION OF HIGH-FREQUENCY GRAVITATIONAL WAVES

2002 ◽  
Vol 11 (07) ◽  
pp. 1049-1059 ◽  
Author(s):  
FANG-YU LI ◽  
MENG-XI TANG
Keyword(s):  
Gravitational Waves ◽  
High Frequency ◽  
High Energy ◽  
High Energy Particle ◽  
Energy Particle ◽  
Particle Beams ◽  
Detection Systems ◽  
Extremely High Frequency ◽  
Electromagnetic Detection ◽  
Inflationary Models

Unlike usual astrophysical sources of gravitational wave (GW), strong electromagnetic (EM) oscillation systems, high-energy particle beams, solar plasma and crystal arrays are able to produce GWs of extremely high-frequency. Their frequencies may reach up to 108 Hz or higher, but the corresponding amplitude orders are only 10-33 - 10-40. We review the possibility of EM detection for the above GWs. In addition, the maximal signal of high-frequency relic GWs, recently expected by quintessential inflationary models, may be firmly localized in the GHz region. We estimate perturbative effects of the relic GWs to the EM detection systems, and show that the effects can possibly provide a new scheme for the EM detection of the relic GW in the GHz window.

Electron and ion irradiation-induced dissolution of mechanical twins in the intermetalic U3Si: An in situ HVEM study

1989 ◽  
Vol 47 ◽  
pp. 652-653
Author(s):  
Charles W. Allen ◽  
Robert C. Birtcher
Keyword(s):  
Elevated Temperatures ◽  
Ion Irradiation ◽  
Ion Beam ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Heavy Ion ◽  
High Energy ◽  
Mechanical Twinning ◽  
In Situ Experiments

The uranium silicides, including U3Si, are under study as candidate low enrichment nuclear fuels. Ion beam simulations of the in-reactor behavior of such materials are performed because a similar damage structure can be produced in hours by energetic heavy ions which requires years in actual reactor tests. This contribution treats one aspect of the microstructural behavior of U3Si under high energy electron irradiation and low dose energetic heavy ion irradiation and is based on in situ experiments, performed at the HVEM-Tandem User Facility at Argonne National Laboratory. This Facility interfaces a 2 MV Tandem ion accelerator and a 0.6 MV ion implanter to a 1.2 MeV AEI high voltage electron microscope, which allows a wide variety of in situ ion beam experiments to be performed with simultaneous irradiation and electron microscopy or diffraction.At elevated temperatures, U3Si exhibits the ordered AuCu3 structure. On cooling below 1058 K, the intermetallic transforms, evidently martensitically, to a body-centered tetragonal structure (alternatively, the structure may be described as face-centered tetragonal, which would be fcc except for a 1 pet tetragonal distortion). Mechanical twinning accompanies the transformation; however, diferences between electron diffraction patterns from twinned and non-twinned martensite plates could not be distinguished.

Influence of Ultrasound on the Formation of High-energy Particle Tracks in a Liquid-hydrogen Bubble Chamber

1969 ◽  
Vol 99 (9) ◽  
pp. 149-151
Author(s):  
V.A. Akulichev ◽  
L.R. Gavrilov ◽  
V.G. Grebinnik ◽  
V.A. Zhukov ◽  
G. Libman ◽  
...  
Keyword(s):  
Bubble Chamber ◽  
High Energy ◽  
Liquid Hydrogen ◽  
High Energy Particle ◽  
Hydrogen Bubble ◽  
Hydrogen Bubble Chamber ◽  
Energy Particle ◽  
Particle Tracks

High-sensitivity external modulator data link for high-energy particle detector diagnostics

1993 ◽  
Author(s):  
Kent G. McCammon ◽  
Mark E. Lowry ◽  
Yuan-Hann Chang ◽  
Paul J. Parker ◽  
Bolek Wyslouch ◽  
...  
Keyword(s):  
High Sensitivity ◽  
High Energy ◽  
High Energy Particle ◽  
Particle Detector ◽  
Energy Particle ◽  
Data Link
Sign in / Sign up

Export Citation Format

Share Document