In 1994 LEP was still considered to be CERN’s current flagship programme. Indeed, strong scientific arguments had emerged in favour of a full upgrade, maximizing LEP’s potential. At Fermi National Accelerator Laboratory (FNAL) the top quark had been discovered and the indirect determination of its mass by LEP had been fully confirmed. Further precision measurements at LEP had, in addition, greatly strengthened the physics interest in the energy range to which the upgrade would give access. However, the upgrade required additional resources, above all 32 additional superconducting cavities, which had not been included in the previous longor medium-term plans and which would cost about CHF 10 million per year over 3 years. Fortunately Christopher Llewellyn-Smith managed to convince Council of the importance of the LEP upgrade and it was approved in 1995.
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Schopper, H. (2009). The Dramatic Last Period of LEP. In: LEP - The Lord of the Collider Rings at CERN 1980-2000. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-89301-1_14
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