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| MOOTH4 | Performance and Perspective of Modern Synchrotron Light Sources | ion, emittance, synchrotron, lattice | 17 |
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| The first synchrotron radiation was used in a so called parasitic mode from high energy machines (1st generation). At the end of the 1970s and the beginning of 1980s accelerators dedicated to the production of synchrotron radiation were built (2nd generations). With the investigation and developments of insertion devices in the middle of 1980, the 3rd generation synchrotron radiation sources were built and emittances down to some nmrad could be reached. At present around 50 Synchrotron Radiation sources are existing around the world. All of these sources reached there the specification (energy, current, emittance, beam stability, etc.) very soon after the commissioning. With the 4th generation, emittances of down to around 100 pmrad should be reached. This is still a factor of 10 away from the requirement of a diffraction limited light source. According to the expertise in designing and operating of synchrotron radiation sources this should be reachable in the future, but only with circumferences of some kilometers like Petra III or PEP-X. Overall the performances and perspective of synchrotron light source are remarkable. | |||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-MOOTH4 | ||
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| TUT2H6 | Electron Sources and Polarization | ion, gun, cathode, electron | 94 |
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Funding: Supported by the European Community under the FP7 programme (EuCARD-2 and LA3NET) and by the German Federal Ministry of Education and Research (BMBF) grant 05K12CR1. In this presentation the present electron sources and the relevant issues will be discussed. For the electron positron colliders and accelerator based light sources, the electron gun and injector design, are arguably the most critical part. There are a variety of electron source designs: DC guns, normal-conducting RF guns, superconducting RF gun and hybrid guns. All variants have their own ad-vantages and difficulties. We will overview the typical sources around the world, and compare their advantages and main challenges. The polarization production will also be discussed. |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-TUT2H6 | ||
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| WET2H4 | New Cavity Techniques and Future Prospects | cavity, ion, niobium, superconducting-cavity | 173 |
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Funding: This study was supported by National Key Programme for S&T Research and Development (Grant NO.: 2016YFA0400400) and National Natural Science Foundation of China (Grant NO.: 11505197) In the recent decades, Superconducting cavities have been widely used to accelerate electron, positron, and ions. Most SRF cavities are made from bulk niobi-um till now, which has developed fast in the past years and is hard to advance more. Take 1.3 GHz 9-cell cavi-ty for example, the quality factor (Q) can keep above 1010 when the accelerating field (Eacc) reach 40 MV/m, which nearly touch the theoretical limitation of Q and Eacc for bulk niobium. For large superconducting accelerators in future (FCC, CEPC, etc), Q and Eacc should be increased significantly compared to now, which can reduce the cryogenic power and use fewer cavities. So new cavity material and techniques are being studied at accelerator laboratories, while Nitro-gen doping (N-doping) and Nb3Sn have developed quickly and been paid attention to mostly [1]. N-doping can increase Q by one time for 1.3 GHz 9-cell cavity, which have been adopted by Linac Coherent Light Source II (LCLS-II) at SLAC [2]. [1],Alexander Romanenko, Bulk Nb Based SRF Technology, FCC Week 2016. [2],Camille M Ginsburg, LCLS-II Cryomodules at FNAL & JLAB, TTC 2016. |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-WET2H4 | ||
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| THS2H4 | SRF Working Group Summary | cavity, ion, HOM, damping | 223 |
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| Summary of Superconducting RF: This working group focused on the status and challenges of superconducting Radio Frequency (SRF) cavities and systems for present and future high luminosity lepton colliders, the so-called 'factories'. Submissions covered the state of the art of SRF cavity designs, HOM damping, high power couplers, operational experiences and the needs of future colliders. Active work on similar SRF systems for the electron complex of a future electron ion collider (EIC) was presented. Much of this technology is also useful for next generation high brightness light sources and other applications. | |||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-THS2H4 | ||
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| THS2H6 | Summary: Joint Session of Other Technologies and Energy Efficiency | ion, klystron, collider, plasma | 231 |
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| This paper summarizes the presentations and discussions at the joint session of 'Other Technologies' and 'Energy Efficiency.' It also highlights several key issues for R&D in these fields. | |||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-THS2H6 | ||
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