U

  A B C D E F H I L M N O P R S T U        Definitions

Ultimate bunch intensity Bunch intensity corresponding to the expected maximum acceptable beam-beam tune shift with two operating experimental insertions. Assuming the nominal emittance (normalized emittance of 3.75μm) the ultimate bunch intensity corresponds to 1.7 × 1011 protons per bunch.
Ultimate powering Hardware powering required to reach the ultimate beam energy of 7.54 TeV, corresponding to a dipole field of 9 T.
Upstream and downstream Always related to the direction of one of the two beams. If no beam is specified Beam 1 is taken as the default. This implies that stating a position as being
’upstream’ without indicating any beam is equivalent to stating that the position is to the left.

You are here