Energy Calibration of the SPS at 450 GeV/c with Proton and Lead Ion Beams

The momentum of the SPS proton beam at 450 GeV/c, corresponding to the extraction energy for the LHC, was determined by a measurement of the revolution frequencies of proton and lead ion beams. To maximize the sensitivity of the measurement, non-fully stripped Pb53+ was injected into the same magnet...

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Detalles Bibliográficos
Autores principales: Arduini, Gianluigi, Arimatea, C, Bohl, T, Collier, Paul, Cornelis, K, Wenninger, J
Lenguaje:eng
Publicado: 2003
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/702743
Descripción
Sumario:The momentum of the SPS proton beam at 450 GeV/c, corresponding to the extraction energy for the LHC, was determined by a measurement of the revolution frequencies of proton and lead ion beams. To maximize the sensitivity of the measurement, non-fully stripped Pb53+ was injected into the same magnetic cycle than proton beams. The beam momentum was determined from the RF frequency for which the beams are centered in the machine sextupoles. The measured beam momentum is 449.16 +/- 0.14 GeV/c for a nominal momentum of 450 GeV/c. The accuracy is limited by systematic differences observed for measurements in the horizontal and vertical planes.

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