21st International Workshop on Radiation Imaging Detectors

Session

Dosimeters, Neutrons, chair: Ulrich Parzefall

11 Jul 2019, 11:00

63. Miniature Neutron Spectrometer for Space

Dr Christos Papadimitropoulos (Greek Atomic Energy Commission)

11/07/2019, 11:00

general

Oral

Radiation doses received by astronauts outside of the geomagnetic field are a main risk factor for human space exploration. The radiation sources of concern are Galactic Cosmic Rays and Solar Particle Events. The charged particles interact with spaceship materials and even with the astronaut body and produce neutrons. Inside the geomagnetic field Galactic Cosmic Rays interacting with atoms in...

149. Development of Depleted Monolithic Active Pixel Sensors (DMAPS) for Dosimetry in Space

Prof. Charalambos Lambropoulos (ADVEOS PC and National and Kapodistrian University of Athens, Greece)

11/07/2019, 11:15

general

Oral

The ability to protect astronauts from harmful radiation particles is critical for future human exploration missions beyond ISS. Active dosimeters with demanding specifications concerning mass, power consumption and local intelligence are required to support crew autonomy for operational decisions related to radiation hazards. Important progress in the direction of active dosimetry is being...

33. FIVE TRANSVERSAL BEAM PROFILE MONITORS FOR THE ESS COLD LINAC

Francesca Belloni

11/07/2019, 11:30

general

Oral

The European Spallation Source, presently under construction at Lund (Sweden), will consist of a 537 m long linear proton accelerator delivering a 2 GeV proton beam with a 5MW power to a tungsten target, equipped with a highly optimised neutron moderator capable of providing a bi-spectral (thermal and cold) neutron beam to 42 beam ports, 22 of which are followed by a flight path leading to...

95. Study of small scale position-sensitive scintillator detector for gamma-ray spectroscopy

Zhulieta Toneva (University of Sofia "St. Kliment Ohridski", Sofia, Bulgaria)

11/07/2019, 11:45

general

Oral

Precision measurement of the energy and the direction of gamma-rays plays a key role in many fields such as medical imaging, nuclear spectroscopy, and astrophysics. Present space gamma-ray telescopes are mainly based on large arrays of detectors which are expensive, necessarily complex, and take long time to build. A different approach is the use of detector with similar energy and direction...

126. Performance Evaluation of Multi-Array Plastic Scintillation Detector using Static and Dynamic Source Conditions

Mr Bon Tack Koo (Yonsei University)

11/07/2019, 12:00

general

Oral

Radiation portal monitor systems have been deployed to monitor the inflow or outflow of illegal radionuclides at border crossings world widely. Large-sized plastic scintillation detector has been commonly used for RPM system, but due to the components of the plastic scintillator are carbon and hydrogen, which are low Z-number material, it has poor energy resolution that shows the broad Compton...

99. Detailed analysis of quasi-ohmic contacts to high resistive GaAs:Cr structures

Ms Anastasia Lozinskaya (Functional electronics laboratory, Tomsk State University)

11/07/2019, 12:15

general

Oral

Proper choice of contact material leads to reduction of leakage current, increase of X-ray penetration coefficient, when so-called transparent contacts are used, and increase of noise to signal ratio [1].
This work is dedicated to investigation of quasi-ohmic contacts behavior in the system “Me-GaAs:Cr-Me”. AuGe metallization was made by means of electron-beam deposition. Chromium compensated...