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TUCP01 |
An Overview of New Laser Technologies for Applications in Beam Instrumentation |
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- S. Zhang
JLAB, Newport News, Virginia, USA
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Lasers has become an essential part in many accelerator systems, especially in the high intensity, high current, short pulse photo-cathode based accelerators. Use of lasers as diagnostic tools has proven the unique capability of lasers that has surpassed the traditional RF-based devices in some areas. Although the development of new laser technologies and devices has been progressing in an amazingly rapid pace, the technical requirements on laser systems such as drive lasers, seed lasers, diagnostic and synchronization lasers have reached an new high level that goes well above the present capability of commercially available lasers or even lasers that are still under development in research labs. This paper will present a brief overview of the recent development of new solid-state and fiber lasers, in particular their potential applications in high-brightness light sources and FELs. We will discuss, from the point of view of beam instrumentation, the challenges facing the state-of-the-art laser technologies and the near future prospect to practically meet the demands from new accelerators. Past experiences from different accelerator labs will also be presented.
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Slides TUCP01 [5.193 MB]
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| TUPG031 |
Optical Synchrotron Radiation Beam Imaging with a Digital Mask |
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- R.B. Fiorito, A.G. Shkvarunets, H.D. Zhang
UMD, College Park, Maryland, USA
- W.J. Corbett, A.S. Fisher, W.Y. Mok, K. Tian
SLAC, Menlo Park, California, USA
- D. Douglas, F.G. Wilson, S. Zhang
JLAB, Newport News, Virginia, USA
- T.M. Mitsuhashi
KEK, Ibaraki, Japan
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Funding: This work is partially supported by the Office of Naval Research and the DOD Joint Technology Office.
We have applied a new imaging/optical masking technique, which employs a digital micro-mirror device (DMD) and optical synchrotron radiation (OSR), to perform high dynamic range (DR) beam imaging at the JLAB Energy Recovery Linac and the SLAC/SPEAR3 Synchrotron Light Source. The OSR from the beam is first focused onto the DMD to produce a primary image; selected areas of this image are spatially filtered by controlling the state of individual micro-mirrors; and finally, the filtered image is refocused onto a CCD camera. At JLAB this technique has been used successfully to view the beam halo with a DR ~ 105. At SPEAR3 the DMD was used to filter out the bright core of the stored beam to study the turn-by-turn dynamics of the 10-3 weaker injected beam. We describe the optical performance, present limitations and our plans to improve the DR of both experimental systems.
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Poster TUPG031 [4.164 MB]
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