5th International Workshop on Accelerator Radiation Induced Activation (ARIA19)

Session

Session 2

23 Sept 2019, 13:00

Science Culture Center (Institute for Basic Science)

Conveners

Session 2

• Kazuyoshi MASUMOTO

31. A fundamental study on the distribution of contents for the dominant activation nuclides in concrete materials

Kenichi KIMURA

23/09/2019, 13:00

Concrete is one of the useful materials for radiation shielding in the points of its flexibility and inexpensively. The activation, however, is important problem at the decommissioning stage. For the above problem, we have been developing Low-Activation concrete, in order to reduce concrete radioactive waste, and establishment of activation data base for concrete and concrete raw materials....

32. Prediction of specific activity in concrete of accelerator facilities for long-term operation using the Na-24 measurement method

Hiroshi MATSUMURA

23/09/2019, 13:30

Na-24 measurement method Content The advanced zoning of activated/non-activated concrete in accelerator facilities is very important for planning the decommissioning of an accelerator. In a previous study, we found that long-half-life radionuclides, such as Eu-152 and Co-60, should be considered when decommissioning concrete. However, a method that directly measures Eu-152 and Co-60...

52. Study on Concrete Activation Reduction

Mahdi BAKHTIARI

23/09/2019, 14:00

PETtrace cyclotron is one the medical cyclotrons in Korea which is used to generate 18F by impinging 16.5 MeV protons (60 μA) on a water target with enriched 18O via 18O(p, n)18F reaction. The secondary neutrons can activate the surrounding materials that result in radiological hazards. A huge amount of radioactive waste will be generated which is one the main issues due to high cost of...

53. Radiological Assessment of the Beam Dump Facility at CERN

Claudia AHDIDA, Heinz VINCKE, Mirkoantonio CASOLINO

23/09/2019, 14:30

The Beam Dump Facility (BDF) working group has recently submitted a Comprehensive Design Study of a new general-purpose fixed-target facility at CERN. In its initial phase, it will be dedicated to the Search for Hidden Particles (SHiP) experiment. A dense target/dump is located at the core of the facility, approximately 10 m underground. It has the aim of fully absorbing the high intensity 400...