Paper |
Title |
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TUPME005 |
CLIC FFS Lattice Proposals Combining Local and Non-local Chromaticity Corrections |
1343 |
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- O.R. Blanco-García, P. Bambade
LAL, Orsay, France
- R. Tomás
CERN, Geneva, Switzerland
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The requirements on the Final Focusing System (FFS) for a new linear collider has lead to lattice designs where chromaticity is corrected either locally or non-locally. Here, alternative proposals of lattice design are presented for the current CLIC 500GeV beam parameters, combining the local chromaticity correction on the vertical plane and non-local correction on the horizontal. The tight tolerance on phase advances and beta functions imposed to obtain -I transformation required to cancel the chromatic terms is relaxed by enlarging the system length and using a more general transformation definition, aiming to obtain better results in tuning simulations.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME005
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THPME147 |
The High Position Resolution Cavity BPM Developments and Measurement for ILC Final Focus System |
3599 |
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- S.W. Jang, J.G. Hwang, E.-S. Kim, L. Lee
KNU, Deagu, Republic of Korea
- P. Bambade, O.R. Blanco-García, F. Bogard, S. Wallon
LAL, Orsay, France
- Y. Honda, T. Okugi, T. Tauchi, N. Terunuma
KEK, Ibaraki, Japan
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An ultra high position resolution cavity BPM was developed for the final focus system of ATF2, which is a accelerator test facility for ILC final focus system. The main purpose of ATF2 are achievement of 37 nm beam size and nano-meter beam orbit stability at IP(Interaction Point). For these purposes, a few nano meter beam position resolution was required for this cavity BPM, which is called the IP-BPM. The IP-BPM was fabricated 2 blocks of IP-BPM, the first block consists of two cavities in one block and second block consists of single cavity. IP-BPM can measure beam position in vertical and horizontal independently by using rectangular shape single cavity. Three IP-BPMs were installed at ATF IP region inside IP-chamber, and its position resolution was measured. We will present the detailed results on the beam tests.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THPME147
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