2011 Particle Accelerator Conference - List of Authors (Tsang, T.)

Paper	Title	Page
MOP210	Residual Gas Fluorescence Monitor at RHIC	492
	T. Tsang, D.M. Gassner BNL, Upton, Long Island, New York, USA
	Funding: This work was supported by U.S. Department of Energy under Contract No. DE-AC02-98CH10886. A residual gas fluorescence beam profile monitor at the relativistic heavy ion collider (RHIC) has successfully recorded vertical beam sizes of Au-ion beams from 3.85 to 100 GeV/n during the 2010 beam runs. Although the fluorescence cross section of Au-ion is sufficiently large, the low residual gas in a typical vacuum chamber of <10-9 torr produces necessary weak fluorescence photons. However, with adequate CCD exposure time, the vertical beam profiles are captured to provide an independent measurement of the RHIC beam size and emittance. This beam diagnostic technique, utilizing the Au-ion beam induced fluorescence from residual gas where hydrogen is still the dominant constituent in nearly all vacuum system, represents a step towards the realization of a truly noninvasive beam monitor for high-energy particle beams.

Paper

Title

Page

Residual Gas Fluorescence Monitor at RHIC

492

T. Tsang, D.M. Gassner
BNL, Upton, Long Island, New York, USA

Funding: This work was supported by U.S. Department of Energy under Contract No. DE-AC02-98CH10886.
A residual gas fluorescence beam profile monitor at the relativistic heavy ion collider (RHIC) has successfully recorded vertical beam sizes of Au-ion beams from 3.85 to 100 GeV/n during the 2010 beam runs. Although the fluorescence cross section of Au-ion is sufficiently large, the low residual gas in a typical vacuum chamber of <10-9 torr produces necessary weak fluorescence photons. However, with adequate CCD exposure time, the vertical beam profiles are captured to provide an independent measurement of the RHIC beam size and emittance. This beam diagnostic technique, utilizing the Au-ion beam induced fluorescence from residual gas where hydrogen is still the dominant constituent in nearly all vacuum system, represents a step towards the realization of a truly noninvasive beam monitor for high-energy particle beams.