IBIC2020 - List of Authors (Cavanagh, H.V.)

Paper	Title	Page
TUPP24	LOCO Corrections for Beam Trajectory Optimisation on the ISIS Accelerator	70
	E.J. Brookes, H.V. Cavanagh, B. Jones STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
	The ISIS facility at the Rutherford Appleton Laboratory, UK, produces neutron and muon beams for condensed matter research. Its 50 Hz, 800 MeV proton synchrotron delivers a mean beam power of 0.2 MW to two tungsten spallation targets. The beam optics correction technique implemented in this work is Linear Optics from Closed Orbits (LOCO). LOCO modifies existing accelerator models according to a measured orbit-response matrix (ORM). This correction technique identifies imperfections in the machine lattice, and discrepancies between the machine and model. The identification of erroneous elements through analysis of the measured ORM is demonstrated in this work. In comparison to the operational settings achieved through the existing correction techniques, the initial test of the LOCO code demonstrates a 17 % improvement to the RMS trajectory deviation in the horizontal plane.
	Poster TUPP24 [0.607 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2020-TUPP24
About •	paper received ※ 05 September 2020 paper accepted ※ 17 September 2020 issue date ※ 30 October 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

LOCO Corrections for Beam Trajectory Optimisation on the ISIS Accelerator

70

E.J. Brookes, H.V. Cavanagh, B. Jones
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom

The ISIS facility at the Rutherford Appleton Laboratory, UK, produces neutron and muon beams for condensed matter research. Its 50 Hz, 800 MeV proton synchrotron delivers a mean beam power of 0.2 MW to two tungsten spallation targets. The beam optics correction technique implemented in this work is Linear Optics from Closed Orbits (LOCO). LOCO modifies existing accelerator models according to a measured orbit-response matrix (ORM). This correction technique identifies imperfections in the machine lattice, and discrepancies between the machine and model. The identification of erroneous elements through analysis of the measured ORM is demonstrated in this work. In comparison to the operational settings achieved through the existing correction techniques, the initial test of the LOCO code demonstrates a 17 % improvement to the RMS trajectory deviation in the horizontal plane.

Poster TUPP24 [0.607 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2020-TUPP24

About •

paper received ※ 05 September 2020 paper accepted ※ 17 September 2020 issue date ※ 30 October 2020

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)