| Paper |
Title |
Other Keywords |
Page |
| MOPC11 |
Data Acquisition System for Beam Instrumentation of SXFEL and DCLS |
FEL, controls, laser, instrumentation |
137 |
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- Y.B. Yan
SINAP, Shanghai, People’s Republic of China
- J. Chen, L.W. Lai, Y.B. Leng, C.L. Yu, L.Y. Yu, H. Zhao, W.M. Zhou
SSRF, Shanghai, People’s Republic of China
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The high-gain free electron lasers have given scientists hopes for new scientific discoveries in many frontier research areas. The Shanghai X-Ray Free-Electron Laser (SXFEL) test facility is commissioning at the SSRF campus. The Dalian Coherent Light Source (DCLS) has successfully commissioned in the northeast of China, which is the brightest vacuum ultraviolet free electron laser facility. The data acquisition system for beam instrumentation is based on EPICS platform. The field programmable gate array (FPGA) and embedded controller are adopted for the signal processing and device control. The high-level applications are developed using Python. The details of the data acquisition system will be reported in this paper.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2018-MOPC11
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| About • |
paper received ※ 29 August 2018 paper accepted ※ 11 September 2018 issue date ※ 29 January 2019 |
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| TUPC05 |
Influence of Sampling Rate and Passband on the Performance of Stripline BPM |
experiment, simulation, FEL, electron |
307 |
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- T. Wu, S.S. Cao, F.Z. Chen, Y.B. Leng, Y.M. Zhou
SSRF, Shanghai, People’s Republic of China
- J. Chen, L.W. Lai
SINAP, Shanghai, People’s Republic of China
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It is obviously that the property of SBPM is influenced by data acquisition system, but how the procedure of data acquisition and processing takes effect is still room for enquiring into it. This paper will present some data simulation and experiment results to discuss the function between resolution and pass band, sampling rate or other influence factor. We hope that this paper would give some advice for building up data acquisition system of SBPM.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2018-TUPC05
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| About • |
paper received ※ 05 September 2018 paper accepted ※ 10 September 2018 issue date ※ 29 January 2019 |
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| WEPA06 |
Thermal Coefficient of Delay Measurement of the New Phase Stable Optical Fiber |
detector, controls, laser, power-supply |
383 |
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- L. Liu, X. Ma, G. Pei
IHEP, Beijing, People’s Republic of China
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The Thermal Coefficient of Delay (TCD) is an essen-tial parameter of optical fiber which determines a fiber’s phase transfer stability due to temperature variation. The TCD of a new phase stable single mode optical fiber (YPSOC) from Yangtze Optical Fibre and Cable Compa-ny (YOFC) is measured. The radio frequency (RF) signal is modulated to optical wave by a laser module which is transmitted through the 400-meter long YPSOC to be measured. The returned optical wave is demodulated to RF signal by the photodetector. A phase detector and a data acquisition module (DAQ) are used to acquire the phase difference between the forward and returned sig-nals. Two temperature-stabilized cabinets are designed to maintain and control the ambient temperature of the measurement system. The TCD of less than 10ps/km/K at room temperature is obtained. YPSOC and the meas-urement platform can be applied on signal transmission or measurement system that need to compensate the temperature drift.
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Poster WEPA06 [0.653 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2018-WEPA06
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| About • |
paper received ※ 03 September 2018 paper accepted ※ 12 September 2018 issue date ※ 29 January 2019 |
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