Cyclotrons2016 - List of Authors (Jun, W.J.)

Paper	Title	Page
TUP23	Development of Magnetic Field Measurement Instrumentation for 10 MeV Cyclotron	218
	H. Namgoong, J.-S. Chai, H.J. Choi, M. Ghergherehchi, D.H. Ha, W.J. Jun, H.S. Kim, J.C. Lee, S.C. Mun SKKU, Suwon, Republic of Korea
	To produce a radio isotope for Positron Emission To-mography (PET), 10 MeV compact Cyclotron was in-stalled at Sungkyunkwan University. This cyclotron had been produced 10 MeV proton beam. For this cyclotron magnet, the magnetic field measurement instrumentation was being developed. The hall probe sensor was used for field measurement. This hall probe sensor moves radial direction and angular direction by mechanically. The Magnetic field measurement instrumentation measures the field in the range of 5 mm for radial direction and 1 degree for angular direction. Magnetic field was measured with and without cooling. Magnetic field was carried with 4 Gauss without cooling and 0.1 Gauss with cooling. Our developed magnetic field measurement instrumentation has 0.1 Gauss of an error and 0.01 Gauss of resolution over 9 hours.
	Poster TUP23 [14.585 MB]
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THP15	Analysis of the Plasma Characteristics for Beam Current Optimization for TR-13 Cyclotron	339
	W.J. Jun, J.-S. Chai, M. Ghergherehchi, D.H. Ha, H.S. Kim, J.C. Lee, S.C. Mun, H. Namgoong, Y.H. Yeon SKKU, Suwon, Republic of Korea
	There is a TR-13 cyclotron that extracts energy of 13 MeV protons which is located in Sungkyunkwan University. The components of the whole cyclotron are so old that cannot reproduce the situation that had been operated generally. So the researchers in this laboratory were eager to improve the technical problems of the components and finally optimize the beam profile. The finally extracted beam current is critically depends on the initially extracted beam from the ion source injection system (ISIS). The ISIS is composed of several electrical instruments. The voltage or current which is applied to these components can affect the finally extracted beam profile. However, the original values for the input voltage or current is almost fixed to special values that had been written in the operation manual. It means that the bad condition of this cyclotron cannot be matched for these values which had been conducted in the best condition of the operation. So, by using the programmable logic controller (PLC), it is possible to use varying inputs in various conditions, and the beam current is able to be stabilized much better than applying the constant input values. Finally, this paper would show the tendency of the plasma generation in terms of modulating the applying input values which occurs inside the ion source chamber. It represents the plasma characteristics that critically influence the beam current.
	Poster THP15 [2.407 MB]
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Paper

Title

Page

Development of Magnetic Field Measurement Instrumentation for 10 MeV Cyclotron

218

H. Namgoong, J.-S. Chai, H.J. Choi, M. Ghergherehchi, D.H. Ha, W.J. Jun, H.S. Kim, J.C. Lee, S.C. Mun
SKKU, Suwon, Republic of Korea

To produce a radio isotope for Positron Emission To-mography (PET), 10 MeV compact Cyclotron was in-stalled at Sungkyunkwan University. This cyclotron had been produced 10 MeV proton beam. For this cyclotron magnet, the magnetic field measurement instrumentation was being developed. The hall probe sensor was used for field measurement. This hall probe sensor moves radial direction and angular direction by mechanically. The Magnetic field measurement instrumentation measures the field in the range of 5 mm for radial direction and 1 degree for angular direction. Magnetic field was measured with and without cooling. Magnetic field was carried with 4 Gauss without cooling and 0.1 Gauss with cooling. Our developed magnetic field measurement instrumentation has 0.1 Gauss of an error and 0.01 Gauss of resolution over 9 hours.

Poster TUP23 [14.585 MB]

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THP15

Analysis of the Plasma Characteristics for Beam Current Optimization for TR-13 Cyclotron

339

W.J. Jun, J.-S. Chai, M. Ghergherehchi, D.H. Ha, H.S. Kim, J.C. Lee, S.C. Mun, H. Namgoong, Y.H. Yeon
SKKU, Suwon, Republic of Korea

There is a TR-13 cyclotron that extracts energy of 13 MeV protons which is located in Sungkyunkwan University. The components of the whole cyclotron are so old that cannot reproduce the situation that had been operated generally. So the researchers in this laboratory were eager to improve the technical problems of the components and finally optimize the beam profile. The finally extracted beam current is critically depends on the initially extracted beam from the ion source injection system (ISIS). The ISIS is composed of several electrical instruments. The voltage or current which is applied to these components can affect the finally extracted beam profile. However, the original values for the input voltage or current is almost fixed to special values that had been written in the operation manual. It means that the bad condition of this cyclotron cannot be matched for these values which had been conducted in the best condition of the operation. So, by using the programmable logic controller (PLC), it is possible to use varying inputs in various conditions, and the beam current is able to be stabilized much better than applying the constant input values. Finally, this paper would show the tendency of the plasma generation in terms of modulating the applying input values which occurs inside the ion source chamber. It represents the plasma characteristics that critically influence the beam current.

Poster THP15 [2.407 MB]

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)