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Minor, Grant,Kapalka, Jason,Fisher, Chad,Paley, William,Chen, Kevin,Kinakin, Maxim,Earle, Isaac,Moss, Bevan,Bricault, Pierre,Gottberg, Alexander Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.4
TRIUMF, Canada's particle accelerator centre, is constructing a new high-power ISOL (Isotope Separation On-Line) facility called ARIEL (Advanced Rare IsotopE Laboratory). Thick porous targets will be bombarded with up to 48 kW of 480 MeV protons from TRIUMF's cyclotron, or up to 100 kW of 30 MeV electrons from a new e-linac, to produce short-lived radioisotopes for a variety of applications, including nuclear astrophysics, fundamental nuclear structure and nuclear medicine. For efficient release of radioisotopes, the targets are heated to temperatures approaching 2000 ℃, and are exposed to GSv/h level radiation fields resulting from intended fissions and spallations. Due to these conditions, the operational life for each target is only about five weeks, calling for frequent remote target exchanges to limit downtime. A few days after irradiation, the targets have a residual radiation field producing a dose rate on the order of 10 Sv/h at 1 m, requiring several years of decay prior to shipment to a national disposal facility. TRIUMF is installing new remote handling infrastructure dedicated to ARIEL, including hot cells and a remote handling crane. The system design applies learnings from multiple existing facilities, including CERN-ISOLDE, GANIL-SPIRAL II as well as TRIUMF's ISAC (Isotope Separator and ACcelerator).
Characterization and Classification of Soils in Mexicali Valley, Baja California, Mexico
Monica Aviles-Marin,Roberto Soto-Ortiz,Angel Lopez-Lopez,Victor Cardenas-Salazar,Angel Faz-Cano,Earl Alexander,Jesus Roman-Calleros,Isabel Escobosa-Garcia,Fernando Escobosa-Garcia 한국토양비료학회 2014 한국토양비료학회 학술발표회 초록집 Vol.2014 No.6