DIFFUSION IN TEVATRON USING FLYING WIRE

Understanding beam loss in an accelerator is crucial to accelerator design and operation. Losses contribute to a shorter liftetime of a circulating beam, higher radiation doses to accelerator components, and backgrounds in experiments which use the beam. One source of beam loss is diffusion caused by effects such as beam scattering with residual gas in vacuum chamber, noise in the radio frequency acceleration system and power supplies, and beambeam collisions [1]. We measure the diffusion rate in the Fermilab Tevatronusing the flying wire beam profile monitor. We havedevelopeda new techniquefor interpretingthe flying wire data. Using this technique, we measure the proton horizontal diffusion rate for ten stores in the Tevatron during colliding beam operation.