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Study on Vertical Position Reading Noise from Beam Position Monitor in Pohang Light Source Storage Ring Vacuum Chamber

6 ํŽ˜์ด์งฟ’
๊ธฐํƒ€ํŒŒ์ผ
์ตœ์ดˆ๋“ฑ๋ก์ผ 2025.04.26 ์ตœ์ข…์ ฟ’์ž‘์ผ 2011.01
6P ๋ฏธ๋้ฉ๋ณด๊ธฐ
Study on Vertical Position Reading Noise from Beam Position Monitor in Pohang Light Source Storage Ring Vacuum Chamber
  • ๋ฏธ๋้ฉ๋ณด๊ธฐ

    ์„œ์่ง์ •๋ต–

    ยท ๋ฐœํ–‰๊ธฐ๊ด€ : ํ•œ๊ตญ์ง„๊ณตํ•™ํšŒ
    ยท ์ˆ˜๋ก์ง€ ์ •๋ณด : Applied Science and Convergence Technology / 20๊ถŒ / 1ํ˜ธ / 1 ~ 6ํŽ˜์ด์งฟ’
    ยท ์ €์ž๋ช… : ์ฃผ์˜๋„, ๊น€์ฐฝ๋ฒ”, ํ™ฉ์ผ๋ฌธ, ๋ฐ•์ข…๋„

    ์ดˆ๋ก

    A sudden step change is observed in the vertical position readings from beam position monitors (BPMs) mounted at the several sector vacuum chambers of Pohang Light Source (PLS). To study the source of this sudden step change, we measured the RF transmission scattering matrix (S21) through the pickup electrodes of BPMs mounted at the both ends of the sector vacuum chamber. The measured S21 graph of the sector vacuum chambers suffering sudden step change has a peak in the BPM operation frequency bandwidth. Otherwise that of the other sector vacuum chambers doesnโ€™t have a peak. It is shown by the numerical simulation that the peak found in the BPM operation frequency bandwidth corresponds to the longitudinal harmonic of transverse electric (TE) resonance mode

    ์ฐธ๊ณ ์ž๋ฃŒ

    ยท ์—†์Œ
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