In 2012, the ALICE experiment at CERN achieved a temperature of 5.5 trillion kelvin (5.5 × 1012 K). This was regarded as the highest man-made temperature.
However, even this temperature seems relatively low, as according to the Boltzmann constant, the kT for 5.5 × 1012 K is about 473.95 MeV. This is far lower than the energies achieved at the LHC, which are on the order of more than 1,000,000 MeV, i.e. four orders of magnitude higher than "the highest man-made temperature".
The temperature was achieved during heavy ion (208Pb) collisions, which does not affect the calculation much, since the energy imparted to every proton within the ion is on the same scale as in proton-proton LHC operations.
Where, then, did four orders of magnitude of temperature go?