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| THPPA01 |
High-precision Laser Master Oscillators for Optical Timing Distribution Systems in Future Light Sources
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2747 |
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- A. Winter, P. Schmüser, A. Winter
Uni HH, Hamburg
- J. Chen, F.X. Kaertner
MIT, Cambridge, Massachusetts
- F.O. Ilday
Bilkent University, Bilkent, Ankara
- F. Ludwig, H. Schlarb
DESY, Hamburg
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Abstract to be supplied
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Transparencies
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| THPPA02 |
High-Gradient Superconducting Radiofrequency Cavities for Particle Acceleration
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2752 |
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The development of radiofrequency superconductivity for particle acceleration has reached a level where many projects consider its use. One of the many attractive features of these accelerating structures is to achieve very high accelerating fields efficiently. The technology has been developped to a stage where accelerating gradients of more than 25 MV/m are being implemented in accelerator modules. In single-cell test resonators even higher gradients were already achieved. To operate cavities at these gradients efficiently their frequency needs to be kept stable to reduce the need for an overhead in radiofrequency power. Introducing active elements like piezoelectric actuators allows to achieve these goals.
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Transparencies
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| THPPA03 |
The First CW Accelerator in USSR and a Birth of Accelerating Field Focussing
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2755 |
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- V.A. Teplyakov
IHEP Protvino, Protvino, Moscow Region
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In the absence of Professor Teplyakov, Robert Jameson will present the work for which Professor Teplyakov is awarded the 2006 EPS-AG Prize for Achievement. The abstract of Professor Teplyakov's presentation follows: As CW linear accelerators became required, it appeared an absolute necessity to change the initial part of the accelerator. The initial part should prepare bunches of charged particles for the further acceleration in the main part. The CW accelerator should also be economic and reliable. The problem was solved using the principles of adiabatic capture of particles and low energy injection with focusing by means of the RF field. The acceleration of bunches with non-increasing charge density was the basic idea. It allowed reduction of the injection energy without reducing the current. By 1972, initial testing in IHEP Protvino was accomplished, and the first accelerated beam was obtained in an RFQ. The URAL-30 proton linac was commissioned in 1977 in IHEP. It applies RFQ-focusing from injection up to the top energy of 30 MeV. From 1985 until the present, this facility routinely operates as an injector to a booster proton synchrotron, this feeding the entire accelerator complex of ITEP. Development of the first RFQ in the Western world was started at Los Alamos in 1978 and performed a proof-of-principle test in 1980. After that there were many articles and reports and the RFQ became widely known in the world.
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Transparencies
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