| Paper | Title | Page |
|---|---|---|
| MOPCTH010 | Design Work of the ERL-FEL as the High Intense EUV Light Source | 4 |
|
||
| Energy recovery linac(ERL)-based free electron lasers(FELs) are promising candidates for high-power EUV sources. They can recover most acceleration energy from the electron beams and greatly reduce the dumped beam power and activation compared with those based on ordinary linear accelerators. We have investigated a feasible design of a 10-kW class ERL-FEL operated at 13.5 nm for EUV lithography applications. In this talk, we will present the design work of the ERL-FEL as the high-power EUV source. | ||
|
Slides MOPCTH010 [4.589 MB] | |
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
TUIBLH1020 |
Operational Experience of DC Photoemission Gun at the Compact ERL | |
|
||
| Beam commissioning of the compact ERL (cERL) has been performed since Apr. 2013 for the next generation ERL light source project (PEARL), and x-ray generation via laser Compton scattering was demonstrated recently. We will present two years operational experience and future upgrade plan of the DC photoemission gun at the cERL. | ||
|
|
Slides TUIBLH1020 [10.603 MB] | |
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
TUIBLH1021 |
Development of a 500 kV DC Gun with Narrow Gap | |
|
||
| The second 500 kV DC gun with 70 mm anode-cathode gap has been constructed at KEK. In 2014, a high voltage conditioning up to 550 kV was carried out and a 500 kV test has been done more than 50 hours intermittently without any trips. The vacuum of the gun is achieved 6x10-10 Pa during a 500 kV test by pumping NEGs and a bakable cryopump. A beam test has been started from the end of March 2015. | ||
|
|
Slides TUIBLH1021 [2.466 MB] | |
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
| WEIDLH2066 | Performance of the Digital LLRF Systems at KEK cERL | 84 |
|
||
| A compact energy recovery linac (cERL), which is a test machine for the next generation synchrotron light source 3-GeV ERL, was constructed at KEK. In the cERL, a normal conducting (NC) buncher cavity and three superconducting (SC) two-cell cavities were installed for the injector, and two nine-cell SC cavities were installed for the main linac (ML). The radio-frequency (RF) fluctuations for each cavity are required to be maintained at less than 0.1% rms in amplitude and 0.1° in phase. These requirements are fulfilled by applying digital low-level radio-frequency (LLRF) systems. During the beam-commissioning, the LLRF systems were evaluated and validated. A measured beam momentum jitter of 0.006% shows that the target of the LLRF systems is achieved. To further improve the system performance, an adaptive feedforward (FF) control-based approach was proposed and demonstrated in the beam-commissioning. The current status of LLRF system and the adaptive FF approach for LLRF control in the cERL are presented in this paper. | ||
|
|
Slides WEIDLH2066 [5.130 MB] | |
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |