Paper |
Title |
Page |
MOPLS099 |
A Study of Failure Modes in the ILC Main Linac
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789 |
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- D. Schulte, P. Eliasson, A. Latina
CERN, Geneva
- Eckhard. Elsen, D. Kruecker, F. Poirier, N.J. Walker, G.X. Xia
DESY, Hamburg
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Failures in the ILC can lead to beam loss or even damage the machine. Also failures that do not lead to beam loss can affect the luminosity performance, in particular since some time is required to recover from them. In the paper a number of different failures is being investigated and the impact on the machine performance is being studied.
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MOPLS133 |
Preliminary Studies of Ion Effects in ILC Damping Rings
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867 |
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- G.X. Xia, Eckhard. Elsen
DESY, Hamburg
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Ion effects are potentially detrimental to the performance of the damping rings for the International Linear Collider (ILC). In this paper, the ion effects in the damping rings of ILC are briefly reviewed. Fast beam-ion instability (FBII) is studied in the linear regime. The growth rates and the beam blowups due to FBII are analytically calculated and compared for two variants of the ILC damping ring designs (OCS and TESLA) and discussed as a function of the vacuum pressure. Finally, some detailed simulation results are also presented.
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WEPLS046 |
Radiation Levels and Activation at the ILC Positron Source
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2478 |
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- A. Ushakov, S. Riemann
DESY Zeuthen, Zeuthen
- Eckhard. Elsen, K. Floettmann
DESY, Hamburg
- K.N. Sanosyan
CANDLE, Yerevan
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An undulator-based positron source is recommended as baseline design for the International Linear Collider (ILC). Photons generated by electrons passing an undulator hit a rotating target and create electron-positron pairs. The positrons are captured and accelerated. An advantage of this source is the significantly lower radiation level in comparison to a conventional positron source which uses the electron beam directly to produce electron-positron pairs. The fluxes of neutrons and photons have been calculated with the particle transport code FLUKA. The activation of the positron source components has been estimated depending on the parameters of the source. The results for undulator-based and conventional positron sources are compared and presented.
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