Paper |
Title |
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MOPE07 |
Ground Motions Measurements for Synchrotron |
15 |
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- D.T. Ziemianski
CUT, Kraków, Poland
- M.P. Nowak
Solaris, Kraków, Poland
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For more than two decades, ground vibration measurements were made by different teams for feasibility studies of linear accelerators. Recent measurements were performed in the SPS tunnel and at different CERN sites on the surface. The devices to measure vibrations of magnitude ranging in nanometres, the analysis techniques and the results are critically discussed and compared with the former measurements. The implication of the measured integrated R.M.S. displacements for the Crab cavities cavern is mentioned. The equipment used in this study consists of 2 state-of-the-art Guralp broadband triaxial seismometers. Models CMG-T60-0004 performed measurements in three directions V, N/S and E/W. The first analysis was to evaluate the power spectral density for each direction of sensors and event. The power spectral density is calculated from the auto power spectrum. The power spectral density shows a typical curve for the geophones with theμseismic peak between 0.2 and 0.4 [Hz]. It is import ant to point that ground vibrations should not be ignored in planning accelerator facility. Actually it is one of the limiting factor in the optimization of future accelerators.
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Poster MOPE07 [4.968 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE07
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About • |
paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017 |
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MOPE10 |
Dynamic Analysis and Measurement of Ground Motion for the Solaris - National Synchrotron Radiation Centre in Cracow |
24 |
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- D.T. Ziemianski
CUT, Kraków, Poland
- M.P. Nowak
Solaris National Synchrotron Radiation Centre, Jagiellonian University, Kraków, Poland
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The paper presents the results of the ground motion measurements and dynamic analysis performed in the Polish synchrotron radiation facility Solaris. The analysis has been carried out within the framework of the installation experimental lines inside Solaris building and accelerator tunnel. The equipment used in this study consists of 4 seismic, high sensitivity, ceramic flexural ICP accelerometer Models 393B31 (PCB), which performed measurements in one vertical directions. The first analysis was to evaluate the power spectral density for each sensors and event. The power spectral density is calculated from the auto power spectrum. The power spectral density shows a typical curve with theμseismic peak between 0.2 and 0.4 Hz. It is important to point that ground vibrations should not be ignored in planning accelerator facility. All over the measurement, the RMS integrated level in the vertical direction at 1 Hz were calculated and presented in paper.
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Poster MOPE10 [2.916 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE10
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About • |
paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017 |
|
Export • |
reference for this paper using
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※ LaTeX,
※ Text/Word,
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