Over recent weeks, seven components of the beam pipe located at the heart of the CMS detector have been removed. The delicate operations involved have been performed in several stages as the detector opening work has progressed.
Of the seven components concerned, only the central vacuum pipe will be replaced. The other six will be stored in a special radiation-shielded area on the surface and subsequently reinstalled ready for the resumption of machine operation.
This video, which was filmed on 15 May, shows one of the seven components of the vacuum pipe — located to the right of the interaction point — being brought up from the CMS cavern to the surface by the transport team.