Hardware and team pictures

Low impedance collimator, installed in the LHC for beam tests in March 2017

Detail of the collimator jaw that has three stripes of different resistivity values. The buld is made of a new material: molybdenum-graphite (MoGr). On the inner stripe, the MoGr is left uncoated. The yellow strip is made of TiN and the light-gray one of pure Mo. The tapering is also made of MoGr that is reuired because it has an eectrical resistivity that is low enough to allow the Beam position monitor (BPM, light-gray circle in the middle of the tapering) to work.

TCLD collimator for the dispersion suppressor collimation around IR2 and IR7. In IR7, this is combined with the high-field, 11T dipoles.

By summer 2017, a complete prototype of this collimator, which is referred to as TCLD, was built. It is shown in the figure above with a see-through cover. It was prepared for the companies that then participated to the tender for the production of these collimators (5 more units will be built and installed during LS2).


Multimat experiment at HiRadMat to adress the rebustness of future LHC jaw materials, with different coating technologies.

CERN, Malta and SLAC collimation people testing in the control room the SLAC "rotatable" collimator (July 2017)