MEASUREMENT AND DETAILED SIMULATION OF BEAM LOSSES CAUSED BY THIN INTERCEPTION DEVICES (WIRE SCANNERS, SCRAPERS) AT SNS

Abstract

Conversion of BLM readings between into number of lost particles is a challenging task. Any insertion device is a good mean to obtain a localized loss and obtain such conversion factor with direct measurement. Such a measurement serves as a good benchmark for Monte-Carlo simulation of radiation transport. We used wire scanners and scraper induced losses to perform analysis of BLM response to local loss. The paper also provides a technique to measure 0.1% of full beam charge being intercepted by scraper during 650kW production run extracting the useful signal from high noise (20 times higher than signal) environment