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18 results on '"Straatmann, H."'

1. 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., Böhme, C., Böker, J., Borburgh, J., Canale, N., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., De Conto, J. -M., Dymov, S., Felden, O., Gaisser, M., Gebel, R., Giese, N., Gooding, J., Grigoryev, K., Grzonka, D., Tahar, M. Haj, Hahnraths, T., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Javakhishvili, O., Jorat, L., Kacharava, A., Kamerdzhiev, V., Karanth, S., 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., and Żurek, M.

Subjects
High Energy Physics - Experiment, Nuclear Experiment, Physics - Accelerator Physics
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., Comment: 243 pages

Published
2019
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2. 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., De Conto, J. -M., 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., Javakhishvili, O., 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., 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., Tahar, M., Talman, R., Uzikov, Yu., Valdau, Yu., Valetov, E., Wagner, T., Weidemann, C., Wilkin, C., Wirzba, A., Wrońska, A., and Wüstner, P.

Subjects
Physics - Accelerator Physics, High Energy Physics - Experiment
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
2018

3. Electromagnetic Simulation and Design of a Novel Waveguide RF Wien Filter for Electric Dipole Moment Measurements of Protons and Deuterons

Author

Slim, J., Gebel, R., Heberling, D., Hinder, F., Hölscher, D., Lehrach, A., Lorentz, B., Mey, S., Nass, A., Rathmann, F., Reifferscheidt, L., Soltner, H., Straatmann, H., Trinkel, F., and Wolters, J.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The conventional Wien filter is a device with orthogonal static magnetic and electric fields, often used for velocity separation of charged particles. Here we describe the electromagnetic design calculations for a novel waveguide RF Wien filter that will be employed to solely manipulate the spins of protons or deuterons at frequencies of about 0.1 to 2 MHz at the COoler SYnchrotron COSY at J\"ulich. The device will be used in a future experiment that aims at measuring the proton and deuteron electric dipole moments, which are expected to be very small. Their determination, however, would have a huge impact on our understanding of the universe., Comment: 10 pages, 10 figures, 4 tables

Published
2016
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4. New method for a continuous determination of the spin tune in storage rings and implications for precision experiments

Author

Eversmann, D., Hejny, V., Hinder, F., Kacharava, A., Pretz, J., Rathmann, F., Rosenthal, M., Trinkel, F., Andrianov, S., Augustyniak, W., Bagdasarian, Z., Bai, M., Bernreuther, W., Bertelli, S., Berz, M., Bsaisou, J., Chekmenev, S., Chiladze, D., Ciullo, G., Contalbrigo, M., de Vries, J., Dymov, S., Engels, R., Esser, F. M., Felden, O., Gaisser, M., Gebel, R., Glückler, H., Goldenbaum, F., Grigoryev, K., Grzonka, D., Guidoboni, G., Hanhart, C., Heberling, D., Hempelmann, N., Hetzel, J., Hipple, R., Hölscher, D., Ivanov, A., Kamerdzhiev, V., Kamys, B., Keshelashvili, I., Khoukaz, A., Koop, I., Krause, H-J., Krewald, S., Kulikov, A., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Maanen, P., Macharashvili, G., Magiera, A., Maier, R., Makino, K., Marianski, B., Mchedlishvili, D., Meißner, Ulf-G., Mey, S., Nass, A., Natour, G., Nikolaev, N., Nioradze, M., Nogga, A., Nowakowski, K., Pesce, A., Prasuhn, D., Ritman, J., Rudy, Z., Saleev, A., Semertzidis, Y., Senichev, Y., Shmakova, V., Silenko, A., Slim, J., Soltner, H., Stahl, A., Stassen, R., Statera, M., Stephenson, E., Stockhorst, H., Straatmann, H., Ströher, H., Tabidze, M., Talman, R., Engblom, P. Thörngren, Trzcinski, A., Uzikov, Yu., Valdau, Yu., Valetov, E., Vassiliev, A., Weidemann, C., Wilkin, C., Wirzba, A., Wronska, A., Wüstner, P., Zakrzewska, M., Zaplatin, E., Zupranski, P., and Zyuzin, D.

Subjects
Physics - Accelerator Physics, Nuclear Experiment
Abstract

A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune - defined as the number of spin precessions per turn - is given by $\nu_s = \gamma G$ (gamma is the Lorentz factor, $G$ the magnetic anomaly). For 970 MeV/c deuterons coherently precessing with a frequency of ~120 kHz in the Cooler Synchrotron COSY, the spin tune is deduced from the up-down asymmetry of deuteron carbon scattering. In a time interval of 2.6 s, the spin tune was determined with a precision of the order $10^{-8}$, and to $1 \cdot 10^{-10}$ for a continuous 100 s accelerator cycle. This renders the presented method a new precision tool for accelerator physics: controlling the spin motion of particles to high precision is mandatory, in particular, for the measurement of electric dipole moments of charged particles in a storage ring., Comment: 6 pages, 6 figures

Published
2015
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5. Measurement of the Spin-Dependence of the pbar-p Interaction at the AD-Ring

Author

Barschel, C., Bechstedt, U., Dietrich, J., Dolfus, N., Engels, R., Gebel, R., Hadamek, H., Haidenbauer, J., Hanhart, C., Kacharava, A., Krol, G., Kueven, M., Langenberg, G., Lehrach, A., Lorentz, B., Maier, R., Martin, S., Meissner, U. -G., Nekipelov, M., Nikolaev, N. N., Oellers, D., d'Orsaneo, G., Prasuhn, D., Rathmann, F., Retzlaff, M., Sarkadi, J., Schleichert, R., Seyfarth, H., Sibirtsev, A., Spoelgen, D., Stein, H. J., Stockhorst, H., Stroeher, H., Weidemann, Chr., Welsch, D., Wieder, P., Barion, L., Bertelli, S., Carassiti, V., Ciullo, G., Contalbrigo, M., Cotta-Ramusino, A., Dalpiaz, P. F., Drago, A., Guidoboni, G., Lenisa, P., Pappalardo, L., Stancari, G., Stancari, M., Statera, M., Azarian, T., Kulikov, A., Kurbatov, V., Macharashvili, G., Merzliakov, S., Meshkov, I. N., Smirnov, A., Tsirkov, D., Uzikov, Yu., Barsov, S., Belostotski, S., Grigoryev, K., Kravtsov, P., Mikirtychiants, M., Mikirtychiants, S., Vasilyev, A., Esser, F. M., Greven, R., Hansen, G., Jadgfeld, F., Klehr, F., Soltner, H., Straatmann, H., Chiladze, D., Garishvili, A., Lomidze, N., Mchedlishvili, D., Nioradze, M., Tabidze, M., Akopov, N., Avetisyan, A., Elbakyan, G., Marukyan, H., Taroian, S., Benati, P., Erven, W., Kayser, F. J., Kleines, H., Wuestner, P., Bruncko, D., Ferencei, J., Musinsky, J., Urban, J., Augustyniak, W., Marianski, B., Trzcinski, A., Zupranski, P., Dymov, S., Nass, A., Steffens, E., Rathsman, K., Tegner, P. E., Engblom, P. Thoerngren, De Leo, R., Tagliente, G., Kaempfer, B., Trusov, S., Buttimore, N., and Meyer, H. O.

Subjects
Nuclear Experiment
Abstract

We propose to use an internal polarized hydrogen storage cell gas target in the AD ring to determine for the first time the two total spin-dependent pbar-p cross sections sigma_1 and sigma_2 at antiproton beam energies in the range from 50 to 450 MeV. The data obtained are of interest by themselves for the general theory of pbar-p interactions since they will provide a first experimental constraint of the spin-spin dependence of the nucleon-antinucleon potential in the energy range of interest. In addition, measurements of the polarization buildup of stored antiprotons are required to define the optimum parameters of a future, dedicated Antiproton Polarizer Ring (APR), intended to feed a double-polarized asymmetric pbar-p collider with polarized antiprotons. Such a machine has recently been proposed by the PAX collaboration for the new Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt, Germany. The availability of an intense stored beam of polarized antiprotons will provide access to a wealth of single- and double-spin observables, thereby opening a new window on QCD spin physics., Comment: 51 pages, 23 figures, proposal submitted to the SPS committee of CERN

Published
2009

6. Polarizing a stored proton beam by spin flip?

Author

Oellers, D., Barion, L., Barsov, S., Bechstedt, U., Benati, P., Bertelli, S., Chiladze, D., Ciullo, G., Contalbrigo, M., Dalpiaz, P. F., Dietrich, J., Dolfus, N., Dymov, S., Engels, R., Erven, W., Garishvili, A., Gebel, R., Goslawski, P., Grigoryev, K., Hadamek, H., Kacharava, A., Khoukaz, A., Kulikov, A., Langenberg, G., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Macharashvili, G., Maier, R., Martin, S., Merzliakov, S., Meshkov, I. N., Meyer, H. O., Mielke, M., Mikirtychiants, M., Mikirtychiants, S., Nass, A., Nekipelov, M., Nikolaev, N. N., Nioradze, M., d'Orsaneo, G., Papenbrock, M., Prasuhn, D., Rathmann, F., Sarkadi, J., Schleichert, R., Smirnov, A., Seyfarth, H., Sowinski, J., Spoelgen, D., Stancari, G., Stancari, M., Statera, M., Steffens, E., Stein, H. J., Stockhorst, H., Straatmann, H., Stroeher, H., Tabidze, M., Tagliente, G., Engblom, P. Thoerngren, Trusov, S., Vasilyev, A., Weidemann, Chr., Welsch, D., Wieder, P., Wuestner, P., and Zupranski, P.

Subjects
Nuclear Experiment
Abstract

We discuss polarizing a proton beam in a storage ring, either by selective removal or by spin flip of the stored ions. Prompted by recent, conflicting calculations, we have carried out a measurement of the spin flip cross section in low-energy electron-proton scattering. The experiment uses the cooling electron beam at COSY as an electron target. The measured cross sections are too small for making spin flip a viable tool in polarizing a stored beam. This invalidates a recent proposal to use co-moving polarized positrons to polarize a stored antiproton beam., Comment: 18 pages, 6 figures

Published
2009
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7. 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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8. 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

9. 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

10. How to reach a thousand-second in-plane polarization lifetime with 0.97−GeV/c deuterons in a storage ring

Author

Guidoboni, G., Stephenson, E., Böker, J., Wüstner, P., Zakrzewska, M., Zuprański, P., Zyuzin, D., Stroeher, Hans, Mey, Sebastian, Stahl, Achim, JEDI Collaboration, Böhme, C., Bsaisou, J., Chekmenev, S., Chiladze, D., Ciullo, G., Contalbrigo, M., de Conto, J.-M., Dymov, S., Engels, Ralf W., Andrianov, S., Esser, F. M., Eversmann, D., Felden, O., Gaisser, M., Gebel, R., Glückler, H., Goldenbaum, F., Grigoryev, K., Grzonka, D., Hahnraths, T., Augustyniak, W., Heberling, D., Hejny, V., Hempelmann, N., Hetzel, J., Hinder, F., Hipple, R., Hölscher, D., Ivanov, A., Kacharava, A., Kamerdzhiev, V., Bagdasarian, Z., Kamys, B., Keshelashvili, I., Khoukaz, A., Koop, I., Krause, H.-J., Krewald, S., Kulikov, A., Lehrach, A., Lenisa, P., Lomidze, N., Bai, M., Lorentz, B., Maanen, P., Macharashvili, G., Magiera, A., Maier, R., Makino, K., Mariański, B., Mchedlishvili, D., Meißner, Ulf-G., Mey, S., Baylac, M., Morse, W., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nioradze, M., Nowakowski, K., Orlov, Y., Pesce, A., Prasuhn, D., Bernreuther, W., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Rudy, Z., Saleev, A., Sefzick, T., Semertzidis, Y., Senichev, Y., Shmakova, V., Bertelli, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stassen, R., Statera, M., Stockhorst, H., Straatmann, H., Tabidze, M., Talman, R., Berz, M., Thörngren Engblom, P., Trinkel, F., Trzciński, A., Uzikov, Yu., Valdau, Yu., Valetov, E., Vassiliev, A., Weidemann, C., Wilkin, C., Wrońska, A., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Centre National de la Recherche Scientifique (CNRS), and JEDI

Subjects
ANOMALOUS MAGNETIC-MOMENTS, ELECTRIC-DIPOLE MOMENTS, SENSITIVITY, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], ddc:550, Socio-culturale, Physics::Accelerator Physics, Nuclear Experiment
Abstract

International audience; We observe a deuteron beam polarization lifetime near 1000 s in the horizontal plane of a magnetic storage ring (COSY). This long spin coherence time is maintained through a combination of beam bunching, electron cooling, sextupole field corrections, and the suppression of collective effects through beam current limits. This record lifetime is required for a storage ring search for an intrinsic electric dipole moment on the deuteron at a statistical sensitivity level approaching 10−29 e cm.

Published
2016
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11. How to Reach a Thousand-Second in-Plane Polarization Lifetime with 0.97-GeV/c Deuterons in a Storage Ring

Author

Guidoboni, G., Stephenson, E., Andrianov, S., Augustyniak, W., Bagdasarian, Z., Bai, M., Baylac, M., Bernreuther, W., Bertelli, S., Berz, M., Boeker, J., Boehme, C., Bsaisou, J., Chekmenev, S., Chiladze, D., Ciullo, G., Contalbrigo, M., de Conto, J. -M, Dymov, S., Engels, R., Esser, F. M., Eversmann, D., Felden, O., Gaisser, M., Gebel, R., Glueckler, H., Goldenbaum, F., Grigoryev, K., Grzonka, D., Hahnraths, T., Heberling, D., Hejny, V., Hempelmann, N., Hetze, J., Hinder, F., Hipple, R., Hoelscher, D., Ivanov, A., Kacharava, A., Kamerdzhiev, V., Kamys, B., Keshelashvili, I., Khoukaz, A., Koop, I., Krause, H. -J, Krewald, S., Kulikov, A., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Maanen, P., macharashvili, G., Magiera, A., Maier, R., Iviakino, K., Marianski, B., Mchedlishvili, D., Meissner, Ulf-G., Mey, S., Morse, W., Mueller, F., Nass, A., Natour, G., Nikolaev, N., Nioradze, M., Nowakowski, K., Orlov, Y., Pesce, A., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Rudy, Z., Saleev, A., Sefzick, T., Senriertzidis, Y., Senichev, Y., Shmakova, V., Silenko, A., Simon, M., Slim, J., Soltner, H., Stah, A., Stassen, R., Statera, M., Stockhorst, H., Straatmann, H., Stroeher, H., Tabidze, M., Talman, R., Engblom Thorngren, Pia, Trinke, F., Trzcinski, A., Uzikov, Yu., Valdati, Yu., Valetov, E., Vassiliev, A., Weidemann, C., Wilkin, C., Wronska, A., Wuestner, P., Zakrzewska, M., Zupranski, P., Zyuzin, D., Guidoboni, G., Stephenson, E., Andrianov, S., Augustyniak, W., Bagdasarian, Z., Bai, M., Baylac, M., Bernreuther, W., Bertelli, S., Berz, M., Boeker, J., Boehme, C., Bsaisou, J., Chekmenev, S., Chiladze, D., Ciullo, G., Contalbrigo, M., de Conto, J. -M, Dymov, S., Engels, R., Esser, F. M., Eversmann, D., Felden, O., Gaisser, M., Gebel, R., Glueckler, H., Goldenbaum, F., Grigoryev, K., Grzonka, D., Hahnraths, T., Heberling, D., Hejny, V., Hempelmann, N., Hetze, J., Hinder, F., Hipple, R., Hoelscher, D., Ivanov, A., Kacharava, A., Kamerdzhiev, V., Kamys, B., Keshelashvili, I., Khoukaz, A., Koop, I., Krause, H. -J, Krewald, S., Kulikov, A., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Maanen, P., macharashvili, G., Magiera, A., Maier, R., Iviakino, K., Marianski, B., Mchedlishvili, D., Meissner, Ulf-G., Mey, S., Morse, W., Mueller, F., Nass, A., Natour, G., Nikolaev, N., Nioradze, M., Nowakowski, K., Orlov, Y., Pesce, A., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Rudy, Z., Saleev, A., Sefzick, T., Senriertzidis, Y., Senichev, Y., Shmakova, V., Silenko, A., Simon, M., Slim, J., Soltner, H., Stah, A., Stassen, R., Statera, M., Stockhorst, H., Straatmann, H., Stroeher, H., Tabidze, M., Talman, R., Engblom Thorngren, Pia, Trinke, F., Trzcinski, A., Uzikov, Yu., Valdati, Yu., Valetov, E., Vassiliev, A., Weidemann, C., Wilkin, C., Wronska, A., Wuestner, P., Zakrzewska, M., Zupranski, P., and Zyuzin, D.

Abstract

We observe a deuteron beam polarization lifetime near 1000 s in the horizontal plane of a magnetic storage ring (COSY). This long spin coherence time is maintained through a combination of beam bunching, electron cooling, sextupole field corrections, and the suppression of collective effects through beam current limits. This record lifetime is required for a storage ring search for an intrinsic electric dipole moment on the deuteron at a statistical sensitivity level approaching 10(-29) e cm., QC 20161005

Published
2016
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12. Electromagnetic Simulation and Design of a Novel Waveguide RF Wien Filter for Electric Dipole Moment Measurements of Protons and Deuterons

Author

Slim, J., primary, Gebel, R., additional, Heberling, D., additional, Hinder, F., additional, Hölscher, D., additional, Lehrach, A., additional, Lorentz, B., additional, Mey, S., additional, Nass, A., additional, Rathmann, F., additional, Reifferscheidt, L., additional, Soltner, H., additional, Straatmann, H., additional, Trinkel, F., additional, and Wolters, J., additional

Published
2016
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13. Measurement of the Spin–Dependence of the $\overline{p}-p$ Interaction at the AD–Ring

Author

Barschel, C., Bechstedt, U., Dietrich, J., Dolfus, N., Engels, R., Gebel, R., Hadamek, H., Haidenbauer, J., Hanhart, C., Kacharava, A., Krol, G., Kueven, M., Langenberg, G., Lehrach, A., Lorentz, B., Maier, R., Martin, S., Meissner, U.-G., Nekipelov, M., Nikolaev, N.N., Oellers, D., d'Orsaneo, G., Prasuhn, D., Rathmann, F., Retzlaff, M., Sarkadi, J., Schleichert, R., Seyfarth, H., Sibirtsev, A., Spoelgen, D., Stein, H.J., Stockhorst, H., Stroeher, H., Weidemann, Chr., Welsch, D., Wieder, P., Barion, L., Bertelli, S., Carassiti, V., Ciullo, G., Contalbrigo, M., Cotta-Ramusino, A., Dalpiaz, P.F., Drago, A., Guidoboni, G., Lenisa, P., Pappalardo, L., Stancari, G., Stancari, M., Statera, M., Azarian, T., Kulikov, A., Kurbatov, V., Macharashvili, G., Merzliakov, S., Meshkov, I.N., Smirnov, A., Tsirkov, D., Uzikov, Yu., Barsov, S., Belostotski, S., Grigoryev, K., Kravtsov, P., Mikirtychiants, M., Mikirtychiants, S., Vasilyev, A., Esser, F.M., Greven, R., Hansen, G., Jadgfeld, F., Klehr, F., Soltner, H., Straatmann, H., Chiladze, D., Garishvili, A., Lomidze, N., Mchedlishvili, D., Nioradze, M., Tabidze, M., Akopov, N., Avetisyan, A., Elbakyan, G., Marukyan, H., Taroian, S., Benati, P., Erven, W., Kayser, F.J., Kleines, H., Wuestner, P., Bruncko, D., Ferencei, J., Musinsky, J., Urban, J., Augustyniak, W., Marianski, B., Trzcinski, A., Zupranski, P., Dymov, S., Nass, A., Steffens, E., Rathsman, K., Tegner, P.E., Engblom, P. Thoerngren, De Leo, R., Tagliente, G., Kaempfer, B., Trusov, S., Buttimore, N., and Meyer, H.O.

Subjects
Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Physics - Experiment, Detectors and Experimental Techniques, Nuclear Experiment
Abstract

We propose to use an internal polarized hydrogen storage cell gas target in the AD ring to determine for the first time the two total spin–dependent pbar-p cross sections σ1 and σ2 at antiproton beam energies in the range from 50 to 450 MeV. The data obtained are of interest by themselves for the general theory of pbar-p interactions since they will provide a first experimental constraint of the spin–spin dependence of the nucleon–antinucleon potential in the energy range of interest. In addition, measurements of the polarization buildup of stored antiprotons are required to define the optimum parameters of a future, dedicated Antiproton Polarizer Ring (APR), intended to feed a double–polarized asymmetric pbar-p collider with polarized antiprotons. Such a machine has recently been proposed by the PAX collaboration for the new Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt, Germany. The availability of an intense stored beam of polarized antiprotons will provide access to a wealth of single– and double–spin observables, thereby opening a new window on QCD spin physics. A recent experiment at COSY revealed that ep spin–flip cross sections are too small to cause a detectable depolarization of a stored proton beam. This measurement rules out a proposal to use polarized positrons to polarize an antiproton beam by e+pbar spin–flip interactions. Thus, our approach to provide a beam of polarized antiprotons is based on spin filtering, using an internal polarized hydrogen gas target – a method that has been tested with stored protons. We expect to produce a polarized antiproton beam with at least ten orders of magnitude higher intensity than a secondary polarized antiproton beam previously available. Provided that antiproton beams with a polarization of about 15% can be obtained with the APR, the antiproton machine at FAIR (the High Energy Storage Ring) could be converted into a double–polarized asymmetric pbar-p collider by installation of an additional COSY–like ring. In this setup, antiprotons of 3.5 GeV/c collide with protons of 15 GeV/c at c.m. energies of √s ≈ √200 GeV with a luminosity in excess of 10^31 cm−2s−1. The PAX physics program proposed for FAIR has been highly rated, and would include, most importantly, a first direct measurement of the transversity distribution of the valence quarks in the proton, and a first measurement of the moduli and the relative phase of the time–like electric and magnetic form factors G_E,M of the proton. We propose to use an internal polarized hydrogen storage cell gas target in the AD ring to determine for the first time the two total spin-dependent pbar-p cross sections sigma_1 and sigma_2 at antiproton beam energies in the range from 50 to 450 MeV. The data obtained are of interest by themselves for the general theory of pbar-p interactions since they will provide a first experimental constraint of the spin-spin dependence of the nucleon-antinucleon potential in the energy range of interest. In addition, measurements of the polarization buildup of stored antiprotons are required to define the optimum parameters of a future, dedicated Antiproton Polarizer Ring (APR), intended to feed a double-polarized asymmetric pbar-p collider with polarized antiprotons. Such a machine has recently been proposed by the PAX collaboration for the new Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt, Germany. The availability of an intense stored beam of polarized antiprotons will provide access to a wealth of single- and double-spin observables, thereby opening a new window on QCD spin physics.

Published
2009

14. Design and test of a NbTi prototype coil for a low beta section

Author

Statera, M, primary, Ciullo, G, additional, Grigoryev, K, additional, Jagdfeld, H, additional, Kotchenda, L, additional, Kravtsov, P, additional, Lenisa, P, additional, Rathmann, F, additional, Soeltner, H, additional, Schillings, J, additional, Straatmann, H, additional, Trofimov, V, additional, and Vasilyev, A, additional

Published
2014
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15. Polarizing a stored proton beam by spin flip?

Author

Oellers, D., primary, Barion, L., additional, Barsov, S., additional, Bechstedt, U., additional, Benati, P., additional, Bertelli, S., additional, Chiladze, D., additional, Ciullo, G., additional, Contalbrigo, M., additional, Dalpiaz, P.F., additional, Dietrich, J., additional, Dolfus, N., additional, Dymov, S., additional, Engels, R., additional, Erven, W., additional, Garishvili, A., additional, Gebel, R., additional, Goslawski, P., additional, Grigoryev, K., additional, Hadamek, H., additional, Kacharava, A., additional, Khoukaz, A., additional, Kulikov, A., additional, Langenberg, G., additional, Lehrach, A., additional, Lenisa, P., additional, Lomidze, N., additional, Lorentz, B., additional, Macharashvili, G., additional, Maier, R., additional, Martin, S., additional, Merzliakov, S., additional, Meshkov, I.N., additional, Meyer, H.O., additional, Mielke, M., additional, Mikirtychiants, M., additional, Mikirtychiants, S., additional, Nass, A., additional, Nekipelov, M., additional, Nikolaev, N.N., additional, Nioradze, M., additional, d'Orsaneo, G., additional, Papenbrock, M., additional, Prasuhn, D., additional, Rathmann, F., additional, Sarkadi, J., additional, Schleichert, R., additional, Smirnov, A., additional, Seyfarth, H., additional, Sowinski, J., additional, Spoelgen, D., additional, Stancari, G., additional, Stancari, M., additional, Statera, M., additional, Steffens, E., additional, Stein, H.J., additional, Stockhorst, H., additional, Straatmann, H., additional, Ströher, H., additional, Tabidze, M., additional, Tagliente, G., additional, Engblom, P. Thörngren, additional, Trusov, S., additional, Vasilyev, A., additional, Weidemann, Chr., additional, Welsch, D., additional, Wieder, P., additional, Wüstner, P., additional, and Zupranski, P., additional

Published
2009
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16. The selfpriming VAMP

Author

Stehr, M., primary, Gruhler, H., additional, Straatmann, H., additional, Messner, S., additional, Sandmaier, H., additional, and Zengerle, R., additional

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18. How to Reach a Thousand-Second in-Plane Polarization Lifetime with 0.97-GeV/c Deuterons in a Storage Ring.

Author

Guidoboni G, Stephenson E, Andrianov S, Augustyniak W, Bagdasarian Z, Bai M, Baylac M, Bernreuther W, Bertelli S, Berz M, Böker J, Böhme C, Bsaisou J, Chekmenev S, Chiladze D, Ciullo G, Contalbrigo M, de Conto JM, Dymov S, Engels R, Esser FM, Eversmann D, Felden O, Gaisser M, Gebel R, Glückler H, Goldenbaum F, Grigoryev K, Grzonka D, Hahnraths T, Heberling D, Hejny V, Hempelmann N, Hetzel J, Hinder F, Hipple R, Hölscher D, Ivanov A, Kacharava A, Kamerdzhiev V, Kamys B, Keshelashvili I, Khoukaz A, Koop I, Krause HJ, Krewald S, Kulikov A, Lehrach A, Lenisa P, Lomidze N, Lorentz B, Maanen P, Macharashvili G, Magiera A, Maier R, Makino K, Mariański B, Mchedlishvili D, Meißner UG, Mey S, Morse W, Müller F, Nass A, Natour G, Nikolaev N, Nioradze M, Nowakowski K, Orlov Y, Pesce A, Prasuhn D, Pretz J, Rathmann F, Ritman J, Rosenthal M, Rudy Z, Saleev A, Sefzick T, Semertzidis Y, Senichev Y, Shmakova V, Silenko A, Simon M, Slim J, Soltner H, Stahl A, Stassen R, Statera M, Stockhorst H, Straatmann H, Ströher H, Tabidze M, Talman R, Thörngren Engblom P, Trinkel F, Trzciński A, Uzikov Y, Valdau Y, Valetov E, Vassiliev A, Weidemann C, Wilkin C, Wrońska A, Wüstner P, Zakrzewska M, Zuprański P, and Zyuzin D

Abstract

We observe a deuteron beam polarization lifetime near 1000 s in the horizontal plane of a magnetic storage ring (COSY). This long spin coherence time is maintained through a combination of beam bunching, electron cooling, sextupole field corrections, and the suppression of collective effects through beam current limits. This record lifetime is required for a storage ring search for an intrinsic electric dipole moment on the deuteron at a statistical sensitivity level approaching 10^{-29}  e cm.

Published
2016
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