PAC2013 - List of Authors (Lee, S.-Y.)

Paper	Title	Page
TUPBA18	nuSTORM Pion Beamline Design Update	562
	A. Liu, A.D. Bross, D.V. Neuffer Fermilab, Batavia, USA S.-Y. Lee Indiana University, Bloomington, Indiana, USA
	A facility producing neutrinos from muons that decay in a racetrack ring can provide extremely well understood neutrino beams for oscillation physics and the search for sterile neutrinos. The ‘‘neutrinos from STORed Muons"(nuSTORM) facility based on this idea has been introduced by Bross, Neuffer et al. The design of the nuSTORM facility and the particle tracking have been presented in the paper of Liu, et al. This paper demonstrates the recent optimization results of the pion beamline, with G4beamline simulations. The optimum choice of pion beam center momentum, a new algorithm on fitting bivariate Gaussian distribution to the pion phase space data at the downstream side of the horn, and the comparison of the beamline performance with the optics designed based on Graphite and Inconel targets are also described.

TUPBA04	AC Dipole Based Optics Measurement and Correction at RHIC	526
	X. Shen, S.-Y. Lee IUCEEM, Bloomington, Indiana, USA M. Bai, Y. Luo, A. Marusic, G. Robert-Demolaize, S.M. White BNL, Upton, Long Island, New York, USA R. Tomás CERN, Geneva, Switzerland
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Independent component analysis (ICA) was applied to the AC dipole based optics measurement at RHIC to extract beta functions as well as phase advances at each BPM. Existence of excessive beta-beat was observed in both rings of RHIC at store energy. A unique global optics correction scheme was then developed and tested successfully during the RHIC polarized proton run in 2013. The feasibility of using closed orbit bump and sextupole for arc beta-beat correction was also demonstrated. The technique and experimental results of optics correction are reported in this paper.

Paper

Title

Page

nuSTORM Pion Beamline Design Update

562

A. Liu, A.D. Bross, D.V. Neuffer
Fermilab, Batavia, USA
S.-Y. Lee
Indiana University, Bloomington, Indiana, USA

A facility producing neutrinos from muons that decay in a racetrack ring can provide extremely well understood neutrino beams for oscillation physics and the search for sterile neutrinos. The ‘‘neutrinos from STORed Muons"(nuSTORM) facility based on this idea has been introduced by Bross, Neuffer et al. The design of the nuSTORM facility and the particle tracking have been presented in the paper of Liu, et al. This paper demonstrates the recent optimization results of the pion beamline, with G4beamline simulations. The optimum choice of pion beam center momentum, a new algorithm on fitting bivariate Gaussian distribution to the pion phase space data at the downstream side of the horn, and the comparison of the beamline performance with the optics designed based on Graphite and Inconel targets are also described.

TUPBA04

AC Dipole Based Optics Measurement and Correction at RHIC

526

X. Shen, S.-Y. Lee
IUCEEM, Bloomington, Indiana, USA
M. Bai, Y. Luo, A. Marusic, G. Robert-Demolaize, S.M. White
BNL, Upton, Long Island, New York, USA
R. Tomás
CERN, Geneva, Switzerland

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
Independent component analysis (ICA) was applied to the AC dipole based optics measurement at RHIC to extract beta functions as well as phase advances at each BPM. Existence of excessive beta-beat was observed in both rings of RHIC at store energy. A unique global optics correction scheme was then developed and tested successfully during the RHIC polarized proton run in 2013. The feasibility of using closed orbit bump and sextupole for arc beta-beat correction was also demonstrated. The technique and experimental results of optics correction are reported in this paper.