SINAP, Shanghai, People’s Republic of China
MOPE33
SINAP, Shanghai, People’s Republic of China
SSRF, Shanghai, People’s Republic of China
SINAP, Shanghai, People’s Republic of China
| Paper | Title | Page |
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| MOPE31 | Dynamic Performance of a Support System for BBA Components in SXFEL | 80 |
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| The electron beam orbit stability is very important for the Free Electron Laser (FEL) facility. The high beam position stability requirement results in the high position stability for the FEL key components, such as quadruple magnet (Q) and beam position monitor (BPM). This work focus on the research of the dynamic performance of a mechanical support system composed of mechanical supports - including sheets and adjustments - and a granite block mounted on them. It will be applied for the beam based alignment (BBA) Q magnet and BPM for the Soft X-ray FEL project (SXFEL). The Finite-element -FE- calculations of the model characteristics were carried out to guide the subsequent tests. The test results show that the support system can meet the requirement of the SXFEL project. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE31 | |
| About • | paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017 | |
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MOPE33 |
The Cooling Structure for the Cryogenic Permanent Magnet Undulator Prototype at SSRF | |
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| A cryogenic permanent magnet undulator (CPMU) prototype, based on the in-vacuum undulator technology, is under development at Shanghai Synchrotron Radiation Facility (SSRF). The prototype has a magnetic period length of 20 mm and effective peak field 1.04 T (gap 6 mm) at cryogenic temperature. The hybrid type magnetic assembly consists of NdFeB permanent magnet blocks and iron poles. A liquid nitrogen closed loop is adopted for cooling the magnet blocks to about 140 K. The cooling system is well designed to achieve a uniform temperature along the assembly and the temperature gradient is less than 1.5 K per meter. This paper presents the details of the cooling structure design for magnet blocks and iron poles, the mechanical structure of the copper-nickel foil with spring loaded tension mechanism and end tapers, as well as the test results off-line and on-line. | ||
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| TUPE38 | Progress and Mechanical Engineering of FEL Projects at SINAP | 246 |
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| Free electron laser (FEL) technology is the next focus at Shanghai Institute of Applied Physics (SINAP). Shanghai Deep Ultraviolet Free-Electron Laser (SDUV-FEL), a test facility for new FEL principles, was operated for 5 years and got a series of important results. Dalian Coherent Light Source (DCLS), a 50~150nm wavelength FEL user facility based on a 300MeV linac located at Dalian Institute of Chemical Physics, started beam commissioning in August. Shanghai X-ray Free-Electron Laser (SXFEL), a soft X-ray FEL test facility based on an 840MeV linac, will be installed in this month and the commissioning is scheduled at the beginning of 2017. The Progress of the FEL projects and the mechanical engineering in the design and construction are presented. | ||
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Poster TUPE38 [8.096 MB] | |
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE38 | |
| About • | paper received ※ 07 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017 | |
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |