| Paper | Title | Page |
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WG2022 |
Envelope Matching from Injector to Main Linac for ERL | |
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| Since the brilliance of electron beams in Energy Recovery Linac (ERL) is primarily determined by the performance of its injector, the improvement of the injector performance is essential issue. After the injector, the electron beams are accelerated by a main linac to relativistic energy region, in which an emittance growth due to space charge force can be ignored. Because an injected beam with lower energy and a returned beam with higher energy pass through the same main linac, the beam optics in the main linac is restricted to design a reasonable optics throughout the return loop. Therefore, minimization of the emittance, and matching of beam optics to that of the return loop have to be carried out during the injector optimization. The injector parameters have been optimized using multi-objective method with genetic algorithm and a particle tracking code GPT. However, the optimized emittance was far larger than a target emittance, so that some conflict between the minimization of emittance and the restriction of beam optics have been found in the optimization. We report the optimization results, and the strategy to avoid the conflict and to produce a reasonable beam performance. | ||
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Slides WG2022 [2.786 MB] | |
| WG4000 | Closing Plenary Summary of Working Group 4 Instrumentation and Controls for ERL2011 | 105 |
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Slides WG4000 [2.570 MB] | |
WG4002 |
Beam Instrumentation for the Compact ERL at KEK | |
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| At KEK, construction of the Compact ERL (cERL) is under way. Design status of beam instrumentations such as BPMs (stripline electrode) and screen monitors are described. Requirements for detection circuit and other signal processing equipemnts and data transfar/archiving system are also reported. | ||
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Slides WG4002 [2.347 MB] | |