NDLI: Transverse emittance systematics measured for heavy-ion beams at ATLAS

Content Provider	IEEE Xplore Digital Library
Author	Nolen, J.A. Barlow, T.A. Beyer, K.A. Woody, K.A.
Copyright Year	1995
Description	Author affiliation: Div. of Phys., Argonne Nat. Lab., IL, USA (Nolen, J.A.; Barlow, T.A.; Beyer, K.A.; Woody, K.A.)
Abstract	The horizontal and vertical beam emittances and ellipse parameters are determined at the ATLAS superconducting heavy-ion linac by the well-known method of measuring the beam width at a profile monitor downstream of a quadrupole magnet as a function of the magnet current. Typically six base-to-base beam widths are measured and used in a least-squares fit to an algebraic expression for the three unknown ellipse parameters. The algorithm was derived from the first order matrix equation for the beam sigma matrix transform through the quadrupole singlet and. Drift to the profile monitor. To date the emittances of five beams from /sup 12/C/sup 4+/ to /sup 238/U/sup 26+/ have been measured at the entrance of the Positive-ion Injector Linac, yielding normalized values mostly in the range of 0.25-0.30 /spl pi/ mm-mr. These measurements will be extended systematically to several locations to identify possible sources of emittance growth and to develop more systematic beam tuning procedures.
Starting Page	2628
Ending Page	2630
File Size	241886
Page Count	3
File Format	PDF
ISBN	0780329341
DOI	10.1109/PAC.1995.505640
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-05-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Systematics Linear particle accelerator Superconducting magnets Ion sources Current measurement Equations Ion beams Monitoring Electrostatic measurements Optical beams
Content Type	Text
Resource Type	Article

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