The LESS treatment robot is a novel solution designed and manufactured by Waygate Technologies Robotics for the in-situ treatment of the LHC beam screens. The dimensions of the robot are limited longitudinally by the interconnection entry slot and by the beam screen crosssection shape. The robot moves along the beam screen using the inchworm movement principle, by means of a pneumatically-driven clamping system. The robot movement along the beam screen is disentangled from the treatment head movement that is carried out by an electrical motor coupled with a precision driving screw.
During LESS structuring the robot remains rigidly clamped to the beam screen and only the rotating treatment head moves longitudinally engraving the spiral pattern in the beam screen.
Tests have shown that it is possible to reformulate the surface of the metals in the LHC vacuum chambers to a design that under a microscope resembles the type of sound padding seen in music studios. The surface can trap electrons, keeping the chambers clear of the cloud. The University of Dundee said that initial tests at the Super Proton Synchrotron, the LHC injector, have shown the LESS method is very effective at controlling the electron yield, as electron clouds have been fully eradicated.