| Paper |
Title |
Page |
| WPAE016 |
Development of a Precision Amplifier for the Detector
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1514 |
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- K.-H. Park, C.W. Chung, S.-M. Hong, S.-H. Jeong, Y.G. Jung, D.E. Kim, H.-S. Lee, W.W. Lee
PAL, Pohang, Kyungbuk
- B.-K. Kang
POSTECH, Pohang, Kyungbuk
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A high gain trans-resistance amplfier has been developed for measuring the intensity of synchrotron radiation at Pohang Light Source(PLS). This amplifier built with discrete elements and operational amplifiers.It had the capability of measuring range from 1pA to 1 uA with good linearity. A microprocessor was also installed to interface the amplifier with the computer, and controlled the other sub-circuits. The various characteristics of amplifier such as linearity, sensitivity,stability, etc. have been investigated, and its experimental results carried out at the beam line are presented in this paper.
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| WPAE062 |
AC Power Supply for Wobbler Magnet of the MC-50 Cyclotron
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3576 |
| |
- Y.-S. Kim, J.-S. Chai
KIRAMS, Seoul
- C.W. Chung, H.-G. Lee, W.W. Lee, K.-H. Park
PAL, Pohang, Kyungbuk
- B.-K. Kang
POSTECH, Pohang, Kyungbuk
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The MC-50 cyclotron (k=50) produces the ion beam for nuclear physics, chemistry, and applied researches in Korea. It has a small beam diameter with Gaussian beam shape, whereas many users want a beam irradiation on a large target. A wobbler magnet and an AC power supply were designed and constructed to meet the users’ requirement. The power supply has two independently operating channels for the vertical and horizontal coils of the wobbler magnet. The frequency of the AC power supply for both coils is programmable from 1 to 20 Hz in a step of 1 Hz, and the maximum rms output current is 12 A. Various properties of the power supply and experimental results are given in the paper.
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