The wide band normaliser – a new circuit to measure transverse bunch position in accelerators and colliders

In the framework of LHC developments a new idea has emerged to measure transverse beam position, which combines the simplicity and reliability of the LEP system with a higher bandwidth. This new system, called “the wide band normaliser”, makes use of pick-up signals directly and employs delay lines for the normalisation function. The paper describes in detail the working principle and gives performance estimates based on computer simulations and test measurements.