Speaker
Matthew Alexander Fraser
(CERN)
Description
The high efficiency of most slow extraction systems make quantifying the exact amount of beam lost in the process extremely challenging. This is compounded by the lack of time structure in the extracted beam, as is typically requested by high energy physics users, and the difficulty in accurately calibrating d.c. intensity monitors at count rates of ~ 1E13 Hz. Common techniques used to quantify the slow extraction efficiency and their accuracies will be briefly reviewed before recent measurements and studies carried at the SPS are presented and the difficulties encountered are discussed.
