W. Guo

Publications (3)0 Total impact

• Article: Optics East 2007

  J. Hayes, C. Slater, B. Kiernan, C. Dunphy, W. Guo, K. T. Lau, D. Diamond
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  ABSTRACT: We outline a system for monitoring methane over the internet using a simple wireless sensor network. The system was developed for use at a capped landfill site which contains municipal solid waste. The sensor nodes use commercially available metal oxide semiconductor gas sensors to monitor and allow for a near real-time monitoring of gas emissions. This system is intended to complement the work of personnel who have to physically take the measurement using hand-held infrared instrument. We also outline preliminary testing of this system.© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
  09/2007;
• Source

  Available from: Vladimir Peter Derenchuk

  Conference Proceeding: Measurement of space charge effect on transverse emittance

  S. Cousineau, K. Fung, M. Ball, C.M. Chu, V. Derenchuk, G. East, D. Friesel, W. Guo, A. Harbi, S.Y. Lee, T. Sloan, S. Wang, Y. Zhang, J. Holmes, S. Shastry, K.Y. Ng
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  ABSTRACT: The SNS accumulator ring is designed to compress 1.5×10¹⁴ 1 GeV protons from a bunch train of 1000 μs H^- to a single proton bunch with bunch length 700 ns. The injection scenario of the SNS is experimentally simulated at the Cooler Injector Synchrotron (CIS) at Indiana University. A 100 μs, 7 MeV H ^- bunch train from the RFQ and DTL is compressed into a single proton bunch with bunch length ⩽ 150 ns. The transverse rms emittance of the 7 MeV beam is measured by the quadrupole tuning method in the CIS extraction line. Measurements are taken at various beam intensities with peak currents ranging from a few mA to hundreds of mA. Results are compared with simulation, and the effects of multiple strip foil transits and space charge are discussed
  Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001; 02/2001
• Conference Proceeding: A wireless sensor network for methane monitoring

  J. Hayes, C. Slater, B. Kiernan, C. Dunphy, W. Guo, K. T. Lau, D. Diamond