Search for Electric Dipole Moments at Cosy in Jülich - Spin-Tracking Simulations Using Bmad

Poncza, V.; Lehrach, A.

doi:10.18429/jacow-ipac2019-mopts028

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…With the beam-based alignment procedure we succeeded in aligning the beam with respect to the center of the quadrupoles to 40 µm. This is an important ingredient for spin tracking based on a further improved COSY model, in order to finally be able to understand systematic errors of the EDM measurement at COSY [15]. The beam position monitors (BPMs) were calibrated such that the quadrupoles are located at (or close to) the zero line of the coordinate system defined by the BPMs.…”

Section: Discussionmentioning

confidence: 99%

Beam-based alignment at the Cooler Synchrotron COSY as a prerequisite for an electric dipole moment measurement

Wagner¹,

Nass²,

Pretz³

et al. 2021

J. Inst.

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The Jülich Electric Dipole moment Investigation (JEDI) collaboration aims at a direct measurement of the Electric Dipole Moment (EDM) of protons and deuterons using a storage ring. The measurement is based on a polarization measurement. In order to reach highest accuracy, one has to know the exact trajectory through the magnets, especially the quadrupoles, to avoid the influence of magnetic fields on the polarization vector. In this paper, the development of a beam-based alignment technique is described that was developed and implemented at the COoler SYnchrotron (COSY) at Forschungszentrum Jülich. Well aligned quadrupoles permit one to absolutely calibrate the Beam Position Monitors (BPMs). The method is based on the fact that a particle beam, which does not pass through the center of a quadrupole, experiences a deflection. The precision reached by the method is approximately 40μm. Some consequences for the design of a new high precision storage ring for EDM mesasurements are discussed.

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Section: Discussionmentioning

confidence: 99%

Beam-based alignment at the Cooler Synchrotron COSY as a prerequisite for an electric dipole moment measurement

Wagner¹,

Nass²,

Pretz³

et al. 2021

J. Inst.

View full text Add to dashboard Cite

show abstract

CERN Yellow Reports: Monographs, Vol. 3 (2021): Storage ring to search for electric dipole moments of charged particles: Feasibility study

2021

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Search for Electric Dipole Moments at Cosy in Jülich - Spin-Tracking Simulations Using Bmad

Cited by 2 publications

References 3 publications

Beam-based alignment at the Cooler Synchrotron COSY as a prerequisite for an electric dipole moment measurement

Beam-based alignment at the Cooler Synchrotron COSY as a prerequisite for an electric dipole moment measurement

CERN Yellow Reports: Monographs, Vol. 3 (2021): Storage ring to search for electric dipole moments of charged particles: Feasibility study

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