A5101927046- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Radiation Detection and Scintillator Technologies
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Laser-Plasma Interactions and Diagnostics
- Ion-surface interactions and analysis
- Radiation Effects in Electronics
- Radioactive element chemistry and processing
- Chemical Synthesis and Characterization
- Engineering Technology and Methodologies
- Radioactivity and Radon Measurements
- Mechanical and Thermal Properties Analysis
- Particle Detector Development and Performance
- Boron Compounds in Chemistry
- Laser-induced spectroscopy and plasma
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
GSI Helmholtz Centre for Heavy Ion Research
2009-2024
Justus-Liebig-Universität Gießen
2009
The neutron ambient dose equivalent induced by galactic cosmic ray-like (1 GeV/u 56Fe) radiation stopped in a thick aluminum shield was measured at different angles with GSI ball, the standard TLD (thermoluminescent dosimeters) based dosimeter for area monitoring facility. In order to measure reliably large angles, modified version of including set three more sensitive TLD600H/700H cards, instead one TLD600/700, cards used. balls were calibrated reference fields 241Am-Be(alpha,n) available...
Space agencies have recognized the risks of astronauts’ exposure to space radiation and are developing complex model-based risk mitigation strategies. In foundation these models, there still significant gaps knowledge concerning nuclear fragmentation reactions which need be addressed by ground-based experiments. There is a lack data on neutron light ion production heavy ions, an important component galactic cosmic (GCR). A research collaboration has been set up characterize secondary field...
Abstract Knowledge of the characteristics secondary neutrons produced by interaction Galactic Cosmic Radiation with spacecraft shielding materials is becoming increasingly important for predicting and mitigating biological risks space explorers during deep-space travel. Hadron accelerators medical applications are well suited to reproduce part conditions found in terms ion species energies. The objectives this work measure neutron spectra proton helium beams hitting an aluminum target...
At high-energy particle accelerators, area monitoring needs to be performed in a wide range of neutron energies. In principle, neutrons occur from thermal energies up the energy accelerated ions, which is for present GSI (Gesellschaft für Schwerionenforschung) accelerator facility ∼1–2 GeV per nucleon. There are no passive dosemeters available, designed use at accelerators. GSI, dosemeter was developed, suitable measurement radiation by insertion lead layer around Thermoluminescence (TL)...
The potential for a superconducting proton linac (SPL) at CERN started to be seriously considered the end of 1990s. In first conceptual design report (CDR), published in 2000 [1], most 352 MHz RF equipment from LEP was re-used an 800 m long linac, and beam energy limited 2.2 GeV. During following years, revisited optimized better match needs high-power driver neutrino physics. result more compact (470 long) accelerator capable delivering 5 MW power 3.5 GeV, using state-of-the-art cavities...
Experiments were performed in Cave C of GSI (Gesellschaft für Schwerionenforschung) using the LAND (Large Area Neutron Detector) combination with deflection magnet ALADIN (A LArge DIpol magNet) front where charged particles and neutrons can be separated. This arrangement is used to create high-energetic neutron fields by irradiation a thick lead target (5 cm) deuteron beams energies 500 or 800 MeV per nucleon. In break-up reactions separated from proton which deflected magnetic field ALADIN....
(2009). Benchmark Test of the FLUKA Monte Carlo Code for Residual Production with 500 and 950 MeV/u Uranium Beams on Copper Stainless Steel Targets. Nuclear Technology: Vol. 168, Special Issue 11th International Conference Radiation Shielding 15th Topical Meeting Protection Division (Part 3), pp. 747-751.
(2009). Simulation of the Residual Activity Induced by High-Energy Heavy Ions. Nuclear Technology: Vol. 168, Special Issue on 11th International Conference Radiation Shielding and 15th Topical Meeting Protection Division (Part 3), pp. 643-647.
A Bonner sphere spectrometer with TLD cards as sensitive elements was constructed and used at the GSI accelerator complex to measure neutron spectral fluence rates for radiation safety purposes. The spectra were measured in synchrotron tunnel during 550 MeV/u 40Ar beam operation Cave experimental area a 1 GeV/u 56Fe impinging on thick aluminum target. Unfolded compared those calculated using Monte Carlo code FLUKA. show good agreement simulations set proved itself be useful tool different
The Super-FRS, Superconducting Fragment Separator, is a unique machine that presents several challenging technical problems. One of these regarding how to conduct maintenance in the target area where high levels radiation will be generated and human access forbidden. To address this problem use remote system foreseen. objective paper develop systems engineering (SE) research development (R&D) approach suitable Super-FRS Target Area Remote Maintenance Systems (TARMS) RH design adaptation...
Remote Handling (RH) systems are now frequently used to conduct inspections and maintenance in hazardous environments. New particle accelerator facilities present unique logistic challenges due high radiation levels, a environment heavy loads. The Facility for Antiproton Ion Research (FAIR) will deliver beam of all ions up uranium with intensities 10 12 238 U ions/s, which cause levels during operation so human access is limited. This paper contains survey on RH logistics existing High...
The new accelerator SIS100 and the Super-FRS will be built at international Facility for Antiprotons Ion Research FAIR. synchrotron is a core part of FAIR facility which serves acceleration ions like Uranium up to 2.7 GeV/u with intensities 3x1011 particles per second or protons 30 GeV 5x1012 second. superconducting fragment separator, it able separate all kinds nuclear projectile fragments primary heavy ion beams including energies 1.5 During operation activation several components,...
The complex nature of the radiation environment in various high-energy physics facilities necessitates use different kinds monitors. detectors used could be either passive or active and need dedicated read out electronics. present study was conducted at GSI Helmholtzzentrum für Schwerionenforschung Cave A where were tested parallel secondary field generated by a 1 GeV/u <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">56</sup> Fe ion beam...
In high energy accelerator facilities the neutron radiation should be continuously measured during operation to control ambient dose. This requires a reliable dosimeter in wide range. this work we present an optimization of compact cylindrical passive for usage fields.
At particle accelerators, the knowledge of neutron spectra is important for radiation protection to improve accuracy dose measurements, activation and damage studies. Classical Bonner sphere spectrometer a common reliable tool this kind measurements. Here we present new set cylinders with TLD cards as sensitive element be used spectroscopy in wide energy range continuous ultra-short pulse radiation. A simple layout, relatively small dimensions weight, well implementation materials providing...