|Goal||Establishment of a domestic heavy-ion accelerator(RAON) for advanced basic science research on rare isotopes|
|Resource||200MeV/u beam energy, 400kW beam output accelerator|
|Performance||World’s first facility to produce rare isotopes by combining ISOL and IF|
|Period||2011 to 2021|
|location||The International Science and Business Belt Sindong-area(Daejeon Yusoeng-gu)|
|Scale||Total expenses: KRW 1,429,800 million (460.2 billion for device establishment, 609.6 billion for facility construction, 360 billion for land purchase)|
|Site 952,066㎡ (approx. 290,000 pyeong), total floor area 130,144㎡ (approx. 40,000 pyeong)|
|Expected||Delivery of world-class research results based on global competitiveness in basic science|
|outcomes||Stimulation of local industries and enhanced technical capacities through acquisition of novel technology|
|Details||Devices||Development, installation and operation of ionizing devices that supply heavy-ion beams to RAON; acceleratings devices; rare isotope producing devices and experimental apparatuses|
|Facility||Construction of research and supporting facilities (accelerator tunnels, laboratories, supporting facility buildings, management building, dormitory, etc.) for stable operation of RAON and to create an environment conducive to creative research|
|Progress||2009||01||Establishment of a domestic heavy-ion accelerator(RAON) for advanced basic science research on rare isotopes|
|2010||06||Completion of heavy-ion accelerator pre-planning study|
|2011||02||Completion of conceptual design report(CDR) for RAON|
|12||Launch of RAON construction task force|
|2012||01||Establishment of basic plan for RAON establishment|
|2013||06||Completion of technical design report(TDR) for RAON|
|09||Change of basic plan for RAON establishment (1st)|
|2014||05||Confirmation of basic plan for RAON establishment|
|07||Confirmation of facility construction plan|
|12||Start of basic design of facility construction|
|2015||04||Change of basic plan for RAON establishment (2nd)|
|12||Completion of basic design of facility construction plan|
|2016||10||Start of working design of facility construction plan|
|2017||06||Takeover of site (Site renovation by LH)|
|09||Review of working design of facility construction|
|10||Start of building construction|
|2018||10||Start of RAON installation|
|2020||12||Completion of building construction|
|2021||12||Completion of RAON installation|
Atoms are basic units of nature. Atoms are made of protons, neutrons and electrons. Atomic
properties are determined by the number of such constituents. The number of protons determines
the atomic number and chemical properties, while the atomic mass is equal to the sum of protons
Isotopes are twin atoms with the same number of protons and thus the same atomic number but different numbers of neutrons. Each element has several different isotopes. Scientists have discovered 118 elements and about 3,000 isotopes to date.
Rare isotopes are isotopes that have not yet been discovered because they are rare and decay
rapidly. They must be produced or discovered by artificial means because they no longer exist
or only remain in very small traces on the earth.
The nuclear chart shows the distribution of stable isotopes existing on the earth, artificially discovered isotopes, and rare isotopes that have not yet been discovered. Scientists believe that there are a greater number of undiscovered rare isotopes than the number of known atoms.
An accelerator is a device that accelerates particles with electric charges, such as electrons, protons and ions. Depending on the accelerated particle and the purpose of utilization, accelerators can be classified into synchrotron accelerators, proton accelerators, baryon accelerator, and heavy-ion accelerators. Among these accelerators, heavy-ion accelerators are used to produce rare isotopes that have not been observed in nature.
Heavy-ion accelerators ionize atoms heavier than hydrogen and helium, and cause them to collide with target atoms. Such collisions unlock physics on a scale smaller than atoms, leading to the discovery of new, rare isotopes.
The two methods of producing rare isotopes with existing accelerators are Isotope Separation On-Line (ISOL) and In-flight Fragmentation (IF).
Accelerated light atomic ions are collided with heavy element target, and rare isotopes are extracted from the fragmentation of the target. This method produces a large abundance of rare isotopes, and the material obtained from repeated extractions has a high purity.
Accelerated heavy ions are collided with a light element target, and then rare isotopes of interest are extracted from many kinds of very fast moving fragmented heavy ion beams via a rapid separation of very short lived rare isotopes using strong magnets.
While accelerators around the world rely on either ISOL or IF, RAON will be the first kind of
facility having ISOL and IF method combined in addition to each ISOL and IF method available.
After producing rare isotopes with ISOL, RAON again accelerates them with IF. This creates the
possibility of discovering new and rare isotopes.
RAON is expected to increase the rate of discovery of rare isotopes, whilst producing them in larger quantities and in greater variety.
The discovery of new atoms and the identification of the principles behind atomic production will open new horizons for atomic science.
Electromagnetic microstructures are studied in a non-destructive manner using muons.
The various types of atomic structures can be categorized based on precise measurements of mass, size and shape of rare isotopes.
Safer and more effective biomedical methods can be developed using the different properties of rare isotopes.