Title :
Development of a Precision Amplifier for the Detector
Author :
Park, K.H. ; Jeong, S.H. ; Hong, S.M. ; Lee, W.W. ; Jung, Y.G. ; Kim, D.E. ; Lee, H.S. ; Chung, C.W. ; Kang, B.K.
Author_Institution :
Department of Electrical Engineering, POSTECH, Pohang, Korea, pkh@postech.ac.kr
Abstract :
A trans-resistance amplifier has been designed and tested to measure the intensity of synchrotron radiation at Pohang Light Source (PLS). The front-end stage of the amplifier was implemented using discrete circuit elements and can measure input current in the range of 1 pA to 1 μA. A microprocessor interfaces the amplifier with computer and controls the other sub-circuits for synchrotron radiation measurement. The amplifier was tested and obtained a resolution of ∼ 20 fA, a temperature drift of ∼ 0.1 pA/°C, and a signal-to-noise ratio greater than 80 dB.
Keywords :
Circuit testing; Computer interfaces; Current measurement; Detectors; Light sources; Microprocessors; Signal resolution; Signal to noise ratio; Synchrotron radiation; Temperature;
Conference_Titel :
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN :
0-7803-8859-3
DOI :
10.1109/PAC.2005.1590818
