Optics design with longer <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>L</mml:mi></mml:mrow><mml:mrow><mml:mo>*</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> for the final focus system of Compact Linear Collider 380 GeV

The Compact Linear Collider (CLIC) plans to start operation at a center-of-mass energy of 380 GeV. This paper reports on various optimizations the CLIC 380-GeV Final Focus System (FFS). Analytical approximations have been used guide numerical optimizations. first optimization consists reduction vertical beta function interaction point $70\text{ }\text{ }\mathrm{\ensuremath{\mu}}\mathrm{m}$, which is limit hourglass effect. second focuses minimizing lengths final doublet quadrupoles reduce chromaticity. third searched for alternative optics configurations, resulting in implementation novel dispersion profile along FFS. boosts both total and peak luminosities by 7% 9%, respectively.