The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF
AU - Patecki, M.
AU - Aloev, A.V.
AU - Bett, D.R.
AU - Kubo, K.
AU - Marín, E.
AU - Modena, M.
AU - Okugi, T.
AU - Tauchi, T.
AU - Terunuma, N.
AU - Tomás, R.
AU - White, G.R.
ED - Henderson, Stuart
ED - Akers, Evelyn
ED - Satogata, Todd
ED - Schaa, Volker R.W.
TI - Towards Ultra-Low β^{*} in ATF2
J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015
C1 - Richmond, VA, USA
T2 - International Particle Accelerator Conference
T3 - 6
LA - english
AB - The Accelerator Test Facility 2 (ATF2) has already demonstrated the feasibility of Final Focus Systems based on the local chromaticity correction scheme and its focusing capabilities by reaching a vertical beam size at the virtual Interaction Point (IP) of less than 50 nm. The value of the chromaticity in ATF2 is comparable with the expected chromaticity in ILC, but 4 times lower than in a design of CLIC. ATF2 gives the unique possibility to test operation at CLIC chromaticity values by reducing the vertical beta function at the IP by a factor of 4 (the inverse proportionality of chromaticity with beta function value at IP is assumed). The experience collected in this way would be beneficial for both ILC and CLIC projects. Simulations show that the multipolar errors and Final Doublet fringe fields spoil the IP beam sizes at ATF2. Either increasing a value of the horizontal beta function or installing a pair of octupole magnets mitigate the impact of these aberrations. This paper summarizes the studies towards the realization of the ultra-low β^{*} optics in ATF2 and reports on the progress of the construction of the octupoles.
PB - JACoW
CP - Geneva, Switzerland
SP - 38
EP - 41
KW - optics
KW - octupole
KW - multipole
KW - collider
KW - linear-collider
DA - 2015/06
PY - 2015
SN - 978-3-95450-168-7
DO - 10.18429/JACoW-IPAC2015-MOBC1
UR - http://jacow.org/ipac2015/papers/mobc1.pdf
ER -