Keyword: shielding
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TUPA13 Research of Bellow Shield Structure Applied to BPM impedance, vacuum, simulation, ECR 145
  • X.J. Nie, L. Kang, R.H. Liu, S.K. Tian
    IHEP, Beijing, People’s Republic of China
  • J.X. Chen, H.Y. He, L. Liu, C.J. Ning, A.X. Wang, G.Y. Wang, J.B. Yu, Y.J. Yu, J.S. Zhang, D.H. Zhu
    IHEP CSNS, Guangdong Province, People’s Republic of China
  The design of shield structure for bellow is an im-portant content for the research of beam position monitor (BPM). The bellow shield structure consists of contact fingers and spring fingers. Several alternative schemes for bellow shield were achieved based on BPM detailed structure. The optimal scheme was achieved by the im-pedance simulation analysis with CST. The dimension of the contact finger was decided based on the length of BPM with the stress condition. The C-type string was manufactured and the spring force was measured as well.  
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About • paper received ※ 20 July 2021       paper accepted ※ 15 October 2021       issue date ※ 29 October 2021  
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WEPC04 A Compact X-Ray Emission (mini-XES) Spectrometer at CLS - Design and Fabrication Methods alignment, detector, undulator, operation 314
  • T.W. Wysokinski, M. Button, B. Diaz Moreno, A.F.G. Leontowich
    CLS, Saskatoon, Saskatchewan, Canada
  Funding: The research described in this paper was performed at the Canadian Light Source, which is supported by the Canada Foundation for Innovation (CFI) and others agencies.
A compact X-ray emission spectrometer (mini-XES) has been designed and fabricated for use at the Brockhouse undulator beamline*. The mini-XES uses cylindrical von Hamos geometry tuned for Fe K-edge and uses a Pilatus 100 K area detector from Dectris**. It is based on a general design implemented at the APS***. The mini-XES design was developed to be as simple to fabricate and as easy to operate as possible. We tried to minimize the number of components, so there are only two main parts that create a chamber. Those two components are joined and aligned by a NW-80 flange. From the beginning, the design was trying to achieve no tools assembly, alignment, and operation. For lower precision alignment we decided to use the centering ring of the NW-80 flange which, together with two posts integrated with the chamber, provides an adequate method for joining the two parts of the enclosure. We use level vials for horizontal adjustment of the holder for the 10 crystals. For high precision alignment of the holder of the crystal, we used the Thorlab KC1/M kinematic mount, which had the adjustment screws accessible from outside of the chamber. The fabrication was done in-house using uPrint SE Plus 3D Printer****. The first tests of the spectrometer were completed in the Brockhouse wiggler beamline and were successful. Future improvements will aim to reduce the background scatter and better position the detector, to improve the fill. Now that the relatively inexpensive design was tested and tried, there is an option to upgrade it to 3D printed tungsten or steel version that would intrinsically provide the required shielding.
* B. Diaz et al., Rev. Sci. Instrum 85, 085104 (2014)
*** B. A. Mattern et al., Rev. Sci. Instrum 83, 023901 (2012)
poster icon Poster WEPC04 [0.809 MB]  
DOI • reference for this paper ※  
About • paper received ※ 09 July 2021       paper accepted ※ 17 October 2021       issue date ※ 10 November 2021  
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WEPC05 An Improved, Compact High Temperature Sample Furnace for X-Ray Powder Diffraction laser, GUI, radiation, FEL 317
  • E. Haas
    BNL, Upton, New York, USA
  • E. Cardenas
    NYIT, Old Westbury, New York, USA
  • A.P. Sirna
    SBU, Stony Brook, New York, USA
  A compact sample furnace was designed and tested at the X-ray Powder Diffraction (XPD) beamline at NSLS-II. This furnace is designed to heat small samples to temperatures of 2000 - 2300°C while allowing the XPD photon beam to pass through with adequate downstream opening in the furnace to collect diffraction data. Since the XPD samples did not reach the desired temperatures initially, engineering studies, tests, and incremental improvements were planned and undertaken to improve performance. The design of the sample furnace will be presented as background, and engineering details will be presented in this paper describing work undertaken to improve the furnace design to allow sample temperatures to reach 2000 - 2300°C or more.  
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About • paper received ※ 26 July 2021       paper accepted ※ 17 October 2021       issue date ※ 31 October 2021  
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