| Paper | Title | Page |
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| THPPP036 | Prototype of High Stability Mechanical Support for SHINE Project | 328 |
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Funding: CAS Project for Young Scientists in Basic Research (YSBR-042), National Natural Science Foundation of China (12125508, 11935020)¿Program of Shanghai Academic/Technology Research Leader (21XD1404100). Quadrupole stability of undulator segment is key to the beam performance in SHINE project. Vibration stability requirement of quadrupole is not larger than 200nm displacement RMS between 1 and 100Hz, but the field test of SHINE tunnel shows that the underground vibration during the day time is greater than 200nm. In this paper, a mechanical support including marble base and active vibration reduction platform is sophisticated designed. With this support, vibration stability of the key quadrupole is expected to be improved and the performances of the quadrupole meet the demands. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP036 | |
| About • | Received ※ 25 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 12 January 2024 | |
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
| THPPP037 | A Micro-Vibration Active Control Method Based on Piezoelectric Ceramic Actuator | 330 |
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Funding: This work was supported by the CAS Project for Young Scientists in Basic Research (YSBR-042), the National Natural Science Foundation of China (12125508, 11935020) In linear accelerator, ground vibration is transmitted to beam element (quadrupole magnet, etc.) through support, and then reflected to the influence of beam orbit or effective emittance. In order to reduce the influence of ground vibration on beam orbit stability, an active vibration isolation platform can be used. In this paper, an active vibration isolation system is proposed, which realizes the inverse dynamic process based on a nano-positioning platform and combines with a proportional controller to reduce the transmission of ground-based excitation to the beam element. The absolute vibration velocity signal obtained from the sensor is input to the controller as feedforward signal. The controller processes the input signal and then the output signal drives the piezoelectric ceramic actuator to generate displacement, realizing the active vibration control. The test results of the prototype show that the active vibration isolation system can achieve 50% displacement attenuation, which indicates that the vibration control strategy has certain engineering application value in the construction of large accelerators. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP037 | |
| About • | Received ※ 25 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 15 December 2023 | |
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |