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The main L-band linacs of the ILC accelerate 2820 bunches from a center of mass of 10 GeV to 500 GeV (and in the proposed later upgrade, to 1 TeV). The emittance of the vertical plane is approximately 400 times less than that of the horizontal plane. Provided the vertical and horizontal mode dipole frequencies are degenerate then the motion in each plane is not coupled. However, in reality the frequency degeneracy is split and the eigenmodes are shifted due to inevitable manufacturing errors introduced in fabricating 20,000 cavities. This gives rise to a transverse coupling in the horizontal-vertical motion and can readily lead to a dilution in the emittance in the vertical plane. We investigate means to ameliorate this effect dilution by splitting the horizontal-vertical tune of the lattice.
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| Authors: |
Jones, R.M.;
Jones, R.M.;
/Manchester U.;
Miller, R.H.;
/SLAC
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| Publication Date: | 2007 Apr 16 |
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| OSTI Identifier: | 902486 |
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| Report Number(s): | SLAC-PUB-12469 |
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| DOE Contract Number: | AC02-76SF00515 |
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| Resource Type: | Conference/Event |
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| Resource Relation: | Prepared for European Particle Accelerator Conference (EPAC 06), Edinburgh, Scotland, 26-30 Jun 2006 |
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| Research Org: | Stanford Linear Accelerator Center (SLAC) |
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| Sponsoring Org: | USDOE |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: 3 pages |
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| Other Number(s): | TRN: US0702848 |
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| Subject: | 43 PARTICLE ACCELERATORS; 36 MATERIALS SCIENCE; A CENTERS; ACCELERATORS; CAVITIES; DILUTION; DIPOLES; LINEAR ACCELERATORS; MANUFACTURING; MITIGATION |
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| Related Subject: | Accelerators,ACCPHY |
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| Availability: | http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-12469.html |
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| Update Date: | 2008 Feb 05 |
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