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@InProceedings{shanks:napac2019-tuplh20,
author = {J.P. Shanks and G.W. Codner and M.J. Forster and D.L. Rubin and S. Wang and L. Ying},
title = {{Commissioning of the CESR Upgrade for CHESS-U}},
booktitle = {Proc. NAPAC'19},
pages = {522--525},
paper = {TUPLH20},
language = {english},
keywords = {MMI, HOM, wiggler, impedance, storage-ring},
venue = {Lansing, MI, USA},
series = {North American Particle Accelerator Conference},
number = {4},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2019},
issn = {2673-7000},
isbn = {978-3-95450-223-3},
doi = {10.18429/JACoW-NAPAC2019-TUPLH20},
url = {http://jacow.org/napac2019/papers/tuplh20.pdf},
note = {https://doi.org/10.18429/JACoW-NAPAC2019-TUPLH20},
abstract = {The Cornell Electron Storage Ring (CESR) was upgraded in the second half of 2018 to become a dedicated synchrotron light source, CHESS-U. The upgrade is by far the largest modification to CESR in its 40-year history, replacing one-sixth of the storage ring with six new double-bend achromats, increasing beam energy from 5.3 GeV to 6.0 GeV, and switching from two counter-rotating beams to a single on-axis positron beam. The new achromats include combined-function dipoles, a first in CESR, and reduce the horizontal emittance by a factor of four. Eight compact narrow-gap undulators (4.6mm vacuum chamber aperture) and one high-energy 24-pole wiggler feed a total of six new and five existing x-ray end stations from a single positron beam. Commissioning of CHESS-U took place in the first half of 2019. We report on the methods and results of beam commissioning, including initial beam accumulation, optics correction, characterization, and commissioning of compact permanent-magnet insertion devices.},
}