Development and investigation of the 2/spl pi/ beam loss monitors for super-high energy accelerators. I. QUAD-BLM for 'warm' machines

Described are the results on examination in the 70 GeV proton circulating beam of beam loss monitor (BLM) called QUAD, having been developed for the the UNK-I. The specific feature of QUAD is its special design: quasi-2/spl pi/ geometry of sensitive volume and installation directly on the accelerator beam pipe for increasing its sensitivity to the beam loss and reproducibility. The significant advantages of QUAD (air-filled, diaphragm-type, four-module ion chamber) against the traditionally remoted from the accelerator beam pipe BLM's have been proved. Experimental results are presented together with the computer simulation ones for investigated and for the TeV beam energies.<
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