| Paper |
Title |
Page |
| MOPKF040 |
Effect of Electron-beam Feedbacks on the ELETTRA Storage-ring Free-electron Laser
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393 |
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- M. Trovò, D. Bulfone, M. Danailov, G. De Ninno, B. Diviacco, V. Forchi', M. Lonza
ELETTRA, Basovizza, Trieste
- L. Giannessi
ENEA C.R. Frascati, Frascati (Roma)
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As is well known, the stability of a storage-ring free-electron laser is strongly related to that of the electron beam. With respect to second-generation devices, such as Super ACO and UVSOR, the free-electron laser at ELETTRA is characterized by a noticeably higher gain and, consequently, shows to be much more sensitive to electron-beam instabilities. In order to counteract the impact of such instabilities, both a longitudinal multibunch and a local orbit feedbacks have been implemented for free-electron laser operation. Aim of this paper is to report on the beneficial effect of these feedback systems on the laser performance.
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| THPLT019 |
Commissioning Results of the Multi Bunch Feedback System at SLS
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2505 |
| |
- M. Dehler, R. Kramert, P. Pollet, T. Schilcher
PSI, Villigen
- D. Bulfone, M. Lonza
ELETTRA, Basovizza, Trieste
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Within the frame of the project for a multi bunch feedback system for the Swiss Light Source (SLS), a new family of 500 MS/s analog to digital and digital to analog conversion boards with an 8 bit resolution has been developed, containing on board MUX and DEMUX circuitry to reduce data rates to approximately 20 MS/s using up to ten Front Panel Data Port (FPDP) ports. Using six quad processor DSP boards, full bandwidth bunch by bunch feedbacks in the transverse and longitudinal planes are set up to provide bunch by bunch correction kicks with a 2 nsec resolution. We report on the hardware setup and properties as well as feedback performance in the SLS storage ring.
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| THPLT053 |
Fast Orbit Feedback Developments at ELETTRA
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2601 |
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- D. Bulfone, R. De Monte, M. Ferianis, V. Forchi', M. Lonza
ELETTRA, Basovizza, Trieste
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A number of fast local orbit feedback stations are being sequentially installed at ELETTRA to improve the stability of the electron beam at the Insertion Device source points. They rely on Beam Position Monitors equipped with digital detector electronics that provides high precision and readout rate. The local feedback stations will be integrated in a fast global orbit feedback system, which is the goal of the ongoing developments. The performance and the operational experience gained with the local feedback systems are presented together with the planned road map towards the global system.
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