Speaker
Dr
Benjamin Todd
(CERN)
Description
The Beam Interlock System (BIS) forms the backbone of the LHC
Machine Protection System, allowing 100’s of distributed User
Systems to inhibit beam operation and request Beam Dump from all
around the 28 km circumference of the LHC. The time response of the
BIS is in the order of only 100s of microseconds from any connected
User System to the LHC Beam Dumping System. The rapid time response
requirement of the BIS is coupled with very high safety constraints,
dependability is a key issue, as whilst providing a secure and
robust protection, it should not be a source of unnecessary beam
dumps.
This presentation begins by describing the system level architecture
of the LHC BIS, the sub-system technological choices are then
explained. As safety is of the highest priority, the preliminary
results of the BIS dependability analysis are then shown, and as a
summary, the expected worst-case activation time of the system is
demonstrated.
Author
Dr
Benjamin Todd
(CERN)
