17–22 May 2026
C.I.D
Europe/Zurich timezone

Absolute energy and machine length calibration in the SPS

THP4011
21 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC4.A04: Hadron accelerators: Circular Accelerators Poster session

Speaker

Riccardo De Maria (European Organization for Nuclear Research)

Description

This contribution presents the results of a recent absolute-energy and machine-length calibration of the CERN Super Proton Synchrotron (SPS) using two different particle species on the same magnetic cycle. A recent review of the SPS ring geometry and magnet alignments resulted in a change of machine circumference in the optics models to better approach the as-built machine. This measurement aims at measuring the real machine circumference based on the absolute energy calibrations, which then allow to accurately determine the circumference from the revolution period. The measurement repeats a similar exercise performed in the early 2000s, using the magnetic center of the sextupole as a reference, and complements using BPMs centers as well. Comparison between new and old measurements as well as models is shown.

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Authors

Federica Murgia (European Organization for Nuclear Research) Giovanni Iadarola (European Organization for Nuclear Research) Hannes Bartosik (European Organization for Nuclear Research) Panagiotis Zisopoulos (European Organization for Nuclear Research) Riccardo De Maria (European Organization for Nuclear Research) Mr Stephane Cettour Cave (European Organization for Nuclear Research)

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