Design, construction, and beam tests of a rotatable collimator prototype for high-intensity and high-energy hadron accelerators

Abstract

A rotatable-jaw collimator design was conceived as a solution to recover from catastrophic beam impacts which would damage a collimator at the Large Hadron Collider (LHC) or its High-Luminosity upgrade (HL-LHC). One such rotatable collimator prototype was designed and built at SLAC and delivered to CERN for tests with LHC-type circulating beams in the Super Proton Synchrotron (SPS). This was followed by destructive tests at the dedicated High Radiation to Materials (HiRadMat) facility to validate the design and rotation functionality. An overview of the collimator design, together with results from tests without and with beam are presented.

Accelerator Engineering and Technology: Accelerator Technology

“…The collimator only needs to be exchanged once all facets have been used up. The testing of this concept is well advanced, thanks to beam tests carried out recently on a prototype developed at SLAC for the LHC upgrade [284]. Another, even more advanced variant of a circular jaw design uses liquid metal coating that is continually refreshed [285].…”