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1. Storage Ring to Search for Electric Dipole Moments of Charged Particles -- Feasibility Study

Author

Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi-Esuain, B., Atanasov, A., Barion, L., Basile, S., Berz, M., Beyß, M., Böhme, C., Böker, J., Borburgh, J., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., De Conto, J.-M., Dymov, S., Felden, O., Gagoshidze, M., Gaisser, M., Gebel, R., Giese, N., Grigoryev, K., Grzonka, D., Haj Tahar, M., Hahnraths, T., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Javakhishvili, O., Jorat, L., Kacharava, A., Kamerdzhiev, V., Karanth, S., Käseberg, C., Keshelashvili, I., Koop, I., Kulikov, A., Laihem, K., Lamont, M., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Makino, K., Martin, S., Mchedlishvili, D., Meißner, U.-G, Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nogga, A., Pesce, A., Poncza, V., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Saleev, A., Schott, M., Sefzick, T., Senichev, Y., Shergelashvili, D., Shmakova, V., Siddique, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stahl, A., Stassen, R., Stephenson, E., Straatmann, H., Ströher, H., Tabidze, M., Tagliente, G., Talman, R., Uzikov, Yu., Valdau, Yu., Valetov, E., Wagner, T., Weidemann, C., Wirzba, A., Wrońska, A., Wüstner, P., Zupranski, P., Zurek., M., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), CERN, and CPEDM

Subjects
lifetime, experimental methods, deuteron: electric moment, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], feedback, Juelich COSY PS, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], sensitivity, charged particle, particle: spin, electric field, particle: velocity, error: statistical, synchrotron, dipole: electric, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], proposed experiment, spin: polarization
Abstract

CERN Yellow Reports: Monographs Published by CERN; International audience; The proposed method exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM) aligned along the particle spin axis. Statistical sensitivities can approach $10^{29} e$ cm. The challenge will be to reduce systematic errors to similar levels. The ring will be adjusted to preserve the spin polarization, initially parallel to the particle velocity, for times in excess of 15 minutes. Large radial electric fields, acting through the EDM, will rotate the polarization. The slow rise in the vertical polarization component, detected through scattering from a target, signals the EDM. The project strategy is outlined. It foresees a step-wise plan, starting with ongoing COSY activities that demonstrate technical feasibility. Achievements to date include reduced polarization measurement errors, long horizontal-plane polarization lifetimes, and control of the polarization direction through feedback from the scattering measurements. The project continues with a proof-of-capability measurement (precursor experiment; first direct deuteron EDM measurement), an intermediate prototype ring (proof-of-principle; demonstrator for key technologies), and finally the high precision electric-field storage ring.

Published
2021

2. First detection of collective oscillations of a stored deuteron beam with an amplitude close to the quantum limit

Author

Slim, J., Nikolaev, N. N., Aksentev, A., Andres, A., Barion, L., Ciullo, G., Dymov, S., Gebel, R., Gaisser, M., Grigoryev, K., Grzonka, D., Javakhishvili, O., Rathmann, F., Kacharava, A., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Magiera, A., Mchedlishvili, D., Wirzba, A., Müller, F., Pesce, A., Poncza, V., Prasuhn, D., Saleev, A., Shmakova, V., Ströher, H., Tabidze, M., Tagliente, G., Valdau, Y., Nass, A., Wagner, T., Weidemann, C., Wrońska, A., Żurek, M., JEDI Collaboration, Hejny, V., Pretz, J., Soltner, H., Abusaif, F., and Aggarwal, A.

Subjects
force, Lorentz, Nuclear and High Energy Physics, Physics and Astronomy (miscellaneous), Beam Dynamics, Socio-culturale, FOS: Physical sciences, oscillation, collective, zero-point, Juelich COSY PS, 01 natural sciences, Economica, PE2_2, PE2_1, gas, 0103 physical sciences, ddc:530, deuteron, beam, ground state, Betatron Oscillations, Nuclear Experiment (nucl-ex), beam position, 010306 general physics, p, electric moment, PE2_3, Nuclear Experiment, lattice, Polarized Beams, Quantum Physics, 010308 nuclear & particles physics, quantum mechanics, Electric Dipole Moment, Ambientale, Surfaces and Interfaces, Storage Rings, Heisenberg, Physics::Accelerator Physics, time dependence, beam oscillation, Quantum Physics (quant-ph), betatron oscillation, coherence
Abstract

Physical review accelerators and beams 24(12), 124601 (2021). doi:10.1103/PhysRevAccelBeams.24.124601, We investigated coherent betatron oscillations of a deuteron beam in the storage ring cooler synchrotron and storage ring, excited by a detuned rf Wien filter (WF). The beam oscillations were detected by conventional beam position monitors. With the currently available apparatus, we show that oscillation amplitudes down to 1 ��m can be detected. The interpretation of the response of the stored beam to the detuned rf WF is based on simulations of the beam evolution in the lattice of the ring and realistic time-dependent 3D field maps of the WF. Future measurements of the electric dipole moment of protons will, however, require control of the relative position of counter-propagating beams in the sub-picometer range. Since here the stored beam can be considered as a rarefied gas of uncorrelated particles, we moreover demonstrate that the amplitudes of the zero-point (ground state) betatron oscillations of individual particles are only a factor of about 10 larger than the Heisenberg uncertainty limit. As a consequence of this, we conclude that quantum mechanics does not preclude the control of the beam centroids to sub-picometer accuracy. The smallest Lorentz force exerted on a single particle that we have been able to determine is 10 aN., Published by American Physical Society, College Park, MD

Published
2021

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

Author

JEDI Collaboration, Wagner, T., Ciullo, G., Dahmen, F., Dymov, S., Ehrlich, C., Gebel, R., Grigoryev, K., Grzonka, D., Hejny, V., Hetzel, J., Kacharava, A., Nass, A., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Kononov, A., Kulikov, A., Laihem, K., Lehrach, Andreas, Lenisa, P., Lomidze, N., Magiera, A., Pretz, Jörg, Mchedlishvili, D., Müller, F., Nikolaev, N. N., Pesce, A., Poncza, V., Rathmann, F., Retzlaff, M., Saleev, A., Schmühl, M., Shergelashvili, D., Abusaif, F., Shmakova, V., Slim, Jamal, Stahl, Achim, Stephenson, E., Ströher, H., Tabidze, M., Tagliente, G., Talman, R., Uzikov, Y., Valdau, Y., Aggarwal, A., Wrońska, A., Andres, A., Bekman, I., Canale, N., and Ciepal, I.

Subjects
Accelerator Physics (physics.acc-ph), Beam dynamics, p: polarized beam, Nuclear Theory, Beam-line instrumentation (beam position and profile monitors, measurement methods, FOS: Physical sciences, p: electric moment, Juelich COSY PS, Hardware and accelerator control systems, polarized beam [p], PE2_2, PE2_1, beam-intensity monitors, quadrupole lens: alignment, ddc:610, Physics::Atomic Physics, Nuclear Experiment, beam position: monitoring, spatial resolution, effect [magnetic field], deuteron: electric moment, trajectory [charged particle], Ambientale, magnetic field: effect, calibration, charged particle: trajectory, electric moment [p], bunch length monitors), monitoring [beam position], alignment [quadrupole lens], Physics::Accelerator Physics, Physics - Accelerator Physics, electric moment [deuteron]
Abstract

The J\"ulich 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 J\"ulich. 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 40 micro meter. Some consequences for the design of a new high precision storage ring for EDM mesasurements are discussed., Comment: Submitted to "Journal of Instrumentation (JINST)"

Published
2021

4. Storage ring to search for electric dipole moments of charged particles : feasibility study

Author

Abusaif, F., Aggarwal, Anjali, Aksentev, A., Alberdi-Esuain, B., Andres, A., Atanasov, A., Barion, L., Basile, S., Berz, M., Böhme, C., Böker, J., Borburgh, J., Canale, N., Carli, C., Ciepał, Izabela, Ciullo, G., Contalbrigo, M., De Conto, J.-M., Dymov, S., Felden, O., Gaisser, M., Gebel, R., Giese, N., Gooding, J., Grigoryev, K., Grzonka, D., Haj Tahar, M., Hahnraths, T., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Javakhishvili, O., Jorat, L., Kacharava, A., Kamerdzhiev, A., Karanth, Swathi, Keshelashvili, I., Koop, I., Kulikov, A., Laihem, K., Lamont, M., Lehrach, A., Lenisa, P., Lomidze, I., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, Andrzej, Makino, K., Martin, S., Mchedlishvili, D., Meißner, U.-G., Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nogga, A., Okropiridze, D., Pesce, A., Poncza, V., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Saleev, A., Schott, M., Sefzick, T., Senichev, Y., Shankar, R., Shergelashvili, D., Shmakova, V., Siddique, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stahl, A., Stassen, R., Stephenson, E., Straatmann, H., Ströher, H., Tabidze, M., Tagliente, G., Talman, R., Uzikov, Y., Valdau, Y., Valetov, E., Vilella, E., Vitz, M., Vossebeld, J., Wagner, T., Weidemann, C., Wirzba, A., Wrońska, Aleksandra, Wüstner, P., Zupranski, P., and Zurek, M.

Published
2021

5. Storage ring to search for electric dipole moments of charged particles: Feasibility study

Author

Monographs, CERN Yellow Reports, Abusaif, F., Böhme, C., Zupranski, P., Zurek, M., Böker, J., Borburgh, J., Canale, N., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., De Conto, J.-M., Dymov, S., Aggarwal, A., Felden, Olaf, Gaisser, M., Gebel, Ralf Heinz, Giese, N., Gooding, J., Grigoryev, Kirill, Grzonka, D., Haj Tahar, M., Hahnraths, T., Heberling, D., Aksentev, A., Hejny, V., Hetzel, Jan Henry, Hölscher, D., Javakhishvili, O., Jorat, L., Kacharava, A., Kamerdzhiev, Vsevolod, Karanth, S., Keshelashvili, Irakli, Koop, I., Alberdi-Esuain, B., Kulikov, A., Laihem, Karim, Lamont, M., Lehrach, A., Lenisa, P., Lomidze, I., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Andres, A., Makino, K., Martin, S., Mchedlishvili, D., Meißner, U.-G., Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Atanasov, A., Nogga, A., Okropiridze, Dachi, Pesce, A., Poncza, V., Prasuhn, Dieter, Pretz, J., Rathmann, F., Ritman, James, Rosenthal, M., Saleev, A., Barion, L., Schott, M., Sefzick, T., Senichev, Y., Shankar, R., Shergelashvili, D., Shmakova, V., Siddique, Saad, Silenko, A., Simon, M., Slim, Jamal, Basile, S., Soltner, H., Stahl, A., Stassen, Rolf, Stephenson, E., Straatmann, H., Ströher, Hans, Tabidze, M., Tagliente, G., Talman, R., Uzikov, Y., Berz, M., Valdau, Yury, Valetov, E., Vilella, E., Vitz, M., Vossebeld, J., Wagner, Tim, Weidemann, C., Wirzba, A., Wronska, A., and Wüstner, P.

Abstract

Geneva : CERN Yellow Reports: Monographs 22MB (2021). doi:10.23731/CYRM-2021-003, Published by CERN Yellow Reports: Monographs, Geneva

Published
2021
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6. Storage ring to search for electric dipole moments of charged particles: Feasibility study

Author

Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi-Esuain, B., Andres, A., Atanasov, A., Barion, L., Basile, S., Berz, M., Beyß, M., Böhme, C., Böker, J., Borburgh, J., Canale, N., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., De Conto, J.-M., Dymov, S., Felden, O., Gagoshidze, M., Gaisser, M., Gebel, R., Giese, N., Gooding, J., Grigoryev, K., Grzonka, D., Haj Tahar, M., Hahnraths, T., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Javakhishvili, O., Jorat, L., Kacharava, A., Kamerdzhiev, V., Karanth, S., Käseberg, C., Keshelashvili, I., Koop, I., Kulikov, A., Laihem, K., Lamont, M., Lehrach, A., Lenisa, P., Lomidze, I., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Makino, K., Martin, S., Mchedlishvili, D., Meißner, U.-G, Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nogga, A., Okropiridze, D., Pesce, A., Poncza, V., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Saleev, A., Schott, M., Sefzick, T., Senichev, Y., Shankar, R., Shergelashvili, D., Shmakova, V., Siddique, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stahl, A., Stassen, R., Stephenson, E., Straatmann, H., Ströher, H., Tabidze, M., Tagliente, G., Talman, R., Uzikov, Y., Valdau, Y., Valetov, E., Vilella, E., Vitz, M., Vossebeld, J., Wagner, T., Weidemann, C., Wirzba, A., Wrońska, A., Wüstner, P., Zupranski, P., Zurek., M., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)

Subjects
Accelerator Physics (physics.acc-ph), [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], FOS: Physical sciences, feedback, Juelich COSY PS, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), particle: velocity, synchrotron, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Physics - Experiment, spin: polarization, Nuclear Experiment (nucl-ex), Nuclear Experiment, lifetime, deuteron: electric moment, scattering, sensitivity, charged particle, Accelerators and Storage Rings, particle: spin, electric field, Automatic Keywords, dipole: electric, Physics - Accelerator Physics, statistical, Particle Physics - Experiment
Abstract

The proposed method exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM) aligned along the particle spin axis. Statistical sensitivities could approach 10$^{-29}$ e$\cdot$cm. The challenge will be to reduce systematic errors to similar levels. The ring will be adjusted to preserve the spin polarisation, initially parallel to the particle velocity, for times in excess of 15 minutes. Large radial electric fields, acting through the EDM, will rotate the polarisation from the longitudinal to the vertical direction. The slow rise in the vertical polarisation component, detected through scattering from a target, signals the EDM. The project strategy is outlined. A stepwise plan is foreseen, starting with ongoing COSY activities that demonstrate technical feasibility. Achievements to date include reduced polarization measurement errors, long horizontal plane polarization lifetimes, and control of the polarization direction through feedback from scattering measurements. The project continues with a proof-of-capability measurement (precursor experiment; first direct deuteron EDM measurement), an intermediate prototype ring (proof-of-principle; demonstrator for key technologies), and finally a high-precision electric-field storage ring., 243 pages

Published
2021

7. Feasibility Study for an EDM Storage Ring

Author

Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi-Esuain, B., Barion, L., Basile, S., Berz, M., Beyß, M., Böhme, C., Böker, J., Borburgh, J., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., M Conto, J., Dymov, S., Engels, R., Felden, O., Gagoshidze, M., Gaisser, M., Gebel, R., Giese, N., Grigoryev, K., Grzonka, D., Hanraths, T., Hanhart, C., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Otari Javakhishvili, Kacharava, A., Karanth, S., Käseberg, C., Kamerdzhiev, V., Keshelashvili, I., Koop, I., Kulikov, A., Laihem, K., Lamont, M., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Maier, R., Makino, K., Martin, S., Mchedlishvili, D., G Meißner, U., Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nogga, A., Pesce, A., Poncza, V., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Saleev, A., Schott, M., Sefzick, T., Senichev, Y., Shergelashvili, D., Shmakova, V., Siddique, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stahl, A., Stassen, R., Stephenson, E., Straatmann, H., Ströher, H., Tabidze, M., Tagliente, G., Tahar, M., Talman, R., Yu. Uzikov, Yu. Valdau, Valetov, E., Wagner, T., Weidemann, C., Wilkin, C., Wirzba, A., Wrońska, A., Wüstner, P., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), and CPEDM

Subjects
Accelerator Physics (physics.acc-ph), experimental methods, deuteron: electric moment, hep-ex, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], FOS: Physical sciences, costs, Juelich COSY PS, sensitivity, Accelerators and Storage Rings, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), beam optics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics - Accelerator Physics, spin: polarization, Nuclear Experiment, Particle Physics - Experiment, accelerator: design, activity report, physics.acc-ph
Abstract

This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM, $\vec d$) aligned along the particle spin axis. Statistical sensitivities can approach $10^{-29}$~e$\cdot$cm. The challenge will be to reduce systematic errors to similar levels. The ring will be adjusted to preserve the spin polarization, initially parallel to the particle velocity, for times in excess of 15 minutes. Large radial electric fields, acting through the EDM, will rotate the polarization ($\vec d \times\vec E$). The slow rise in the vertical polarization component, detected through scattering from a target, signals the EDM. The project strategy is outlined. It foresees a step-wise plan, starting with ongoing COSY activities that demonstrate technical feasibility. Achievements to date include reduced polarization measurement errors, long horizontal-plane polarization lifetimes, and control of the polarization direction through feedback from the scattering measurements. The project continues with a proof-of-capability measurement (precursor experiment; first direct deuteron EDM measurement), an intermediate prototype ring (proof-of-principle; demonstrator for key technologies), and finally the high precision electric-field storage ring.

Published
2019

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