The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF
AU - Aumon, S.
AU - Doblhammer, A.
AU - Holzer, B.J.
AU - Härer, B.
AU - Oide, K.
ED - Schaa, Volker RW
ED - Petit-Jean-Genaz, Christine
ED - Ko, In Soo
ED - Kim, Dong Eon
ED - Kim, Kyung Sook
TI - Tolerance Studies and Dispersion Free Steering for Extreme Low Emittance in the FCC-ee Project
J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016
C1 - Busan, Korea
T2 - International Particle Accelerator Conference
T3 - 7
LA - english
AB - The FCC-ee study is investigating the design of a 100 km e⁺/e⁻ circular collider for precision measurements and rare decay observations in the range of 90 to 350 GeV center of mass energy with luminosities in the order of 10³⁵ cm⁻²s⁻¹. In order to reach such performances, an extreme focusing of the beam is required in the interaction regions with a low vertical beta function of 2 mm at the IP. Moreover, the FCC-ee physics program requires very low emittances never achieved in a collider with 2 nm for ε_{x} and 2 pm for ε_{y}, reducing the coupling ratio to 1/1000. With such requirements, any field errors and sources of coupling will introduce spurious vertical dispersion which degrades emittances, limiting the luminosity of the machine. This paper describes the tolerance study and the impact of errors will affect the vertical emittance. In order to preserve the FCC-ee performances, in particular ε_{y}, a challenging correction scheme is proposed to keep the coupling and the vertical emittance as low as possible.
PB - JACoW
CP - Geneva, Switzerland
SP - 3759
EP - 3762
KW - emittance
KW - lattice
KW - collider
KW - sextupole
KW - interaction-region
DA - 2016/06
PY - 2016
SN - 978-3-95450-147-2
DO - 10.18429/JACoW-IPAC2016-THPOR001
UR - http://jacow.org/ipac2016/papers/thpor001.pdf
ER -