IBIC2014 - List of Authors (Murphy, K.)

Paper	Title	Page
WEPF17	Error Analysis for Pepperpot Emittance Measurements Redux: Correlated Phase Spaces	579
	S.M. Lidia FRIB, East Lansing, Michigan, USA K. Murphy LBNL, Berkeley, California, USA
	Funding: This work was supported by the Director, Office of Science, Office of Fusion Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Recently, Jolly et al. presented an analysis of the rms emittance measurement errors from a first principles approach [1]. Their approach demonstrated the propagation of errors in the single-plane rms emittance determination from several instrument and beam related sources. We have extended the analysis of error propagation and estimation to the fully correlated 4-D phase space emittances obtained from pepperpot measurements. We present the calculation of the variances using a Cholesky decomposition approach. Pepperpot data from recent experiments on the NDCX-II beamline are described, and estimates of the emittances and measurement errors for the 4-D as well as the projected rms emittances in this coupled system are presented. [1] S. Jolly, et al., “Data Acquisition and Error Analysis for Pepperpot Emittance Measurements”, Proceedings of DIPAC ’09, WEOA03.
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Paper

Title

Page

Error Analysis for Pepperpot Emittance Measurements Redux: Correlated Phase Spaces

579

S.M. Lidia
FRIB, East Lansing, Michigan, USA
K. Murphy
LBNL, Berkeley, California, USA

Funding: This work was supported by the Director, Office of Science, Office of Fusion Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
Recently, Jolly et al. presented an analysis of the rms emittance measurement errors from a first principles approach [1]. Their approach demonstrated the propagation of errors in the single-plane rms emittance determination from several instrument and beam related sources. We have extended the analysis of error propagation and estimation to the fully correlated 4-D phase space emittances obtained from pepperpot measurements. We present the calculation of the variances using a Cholesky decomposition approach. Pepperpot data from recent experiments on the NDCX-II beamline are described, and estimates of the emittances and measurement errors for the 4-D as well as the projected rms emittances in this coupled system are presented.
[1] S. Jolly, et al., “Data Acquisition and Error Analysis for Pepperpot Emittance Measurements”, Proceedings of DIPAC ’09, WEOA03.

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