A precision measurement of the ϒ′ meson mass

Barber, D. P.; Bremer, Hartmut; Kewisch, J.; Lewin, H. C.; Limberg, T.; Mais, H.; Ripken, G.; Rossmanith, R.; Schmidt, R.; Zwack, F.; Albrecht, H.; Drews, G.; Hasemann, H.; Phillipp, A.; Schmidt‐Parzefall, W.; Schröder, H.; Schulz, H. D.; Selonke, F.; Wurth, R.; Drescher, A.; Gräwe, B.; Hofmann, W.; Markees, A.; Matthiesen, U.; Spengler, J.; Wegener, D.; Heller, R.; Schubert, K. R.; Stiewe, J.; Waldi, R.; Weseler, S.; Edwards, K. W.; Frisken, W. R.; Fukunaga, C.; Goddard, M.; Kim, P.; Orr, R. S.; Patel, P. M.; Prentice, J. D.; Seywerd, H.; Yoon, T. S.; Ammar, R.; Coppage, D.; Davis, R.; Kwak, N.; Boeckmann, P.; Jönsson, L.; Oku, Y.; Arefiev, A.; Danilov, M.; Lubimov, V.; Matveev, V.; Nagovitsin, V.; Semënov, Yu. A.; Shevchenco, V.; Soloshenko, V.; Sopov, V.; Tchernyshew, V.; Tichomirov, I.; Tchistilin, V.; Zaitsev, Yu.; Childers, R.; Darden, C. W.; Gennow, H.; Edwards, C. A.; Peck, C.; Porter, F. C.; Ratoff, P. N.; Aschman, D.; Brock, I. C.; Engler, A.; Kraemer, R. W.; Marlow, D.; Messing, F.; Prindle, D.; Renger, B.; Rippich, C.; Jakubowski, Z.; Niczyporuk, B.; Nowak, G.; Skwarnicki, T.; Bienlein, J. K.; Cooper, S.; Fridman, A.; Gómez, B.; Kloiber, T.; Koch, W.; Schmitz, M.; Trost, H. J.; Zschorsch, P.; Folger, G.; Lurz, B.; Volland, U.; Wegener, H.; Cartacci, A. M.; Conforto, G.; Judicibus, Dario de; Monteleoni, B.; Pelfer, P. G.; Heimlich, F. H.; Lekebusch, R.; Lezoch, P.; Maschmann, W.; Nernst, R.; Schwarz, A. S.; Sievers, D.; Strohbusch, U.; Antreasyan, D.; Irion, J.; Strauch, K.; König, A. C.; Schotanus, J.; Walle, R. T. Van de; Walk, W.; Besset, D.; Cabenda, R.; Cavalli‐Sforza, M.; Cowan, R.; Coyne, D.G.; Newman-Holmes, C.; Bloom, E. D.; Chestnut, R.; Clare, R.; Gaiser, J.; Godfrey, G.; Leffler, S.; Lockman, W. S.; Lowe, S.; Wacker, K.; Gelphman, D.; Hofstadter, R.; Kirkbride, I.; Lee, R.; Litke, A. M.; Matsui, Tetsuo; Pollock, B.; Tompkins, J.; Keh, S.; Kilian, H. G.; Königsmann, K.; Scheer, M.; Schmitt, P.

doi:10.1016/0370-2693(84)90323-x

Cited by 52 publications

(2 citation statements)

References 3 publications

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“…In the recent years, techniques have been developed to improve the stability of the electron beam's energy and orbit by precisely controlling the air temperature in the storage ring to the level of 0.1 • C [9]. In the recent decade, two advanced techniques have been developed to measure the absolute energy of the electron beam in the storage ring with a relative accuracy of few 10 −5 : One uses the Resonant Spin Depolarization (RSD) technique for a high energy electron beam (typically above 1 GeV) [10,11], and the other uses the Compton scattering technique for a low energy beam (typically a few hundreds of MeV) [12,13]. However, both techniques are not readily available to many operational light sources which do not have a means to accurately measure the electron beam energy during routine operation.…”

Section: Introductionmentioning

confidence: 99%

Study of magnetic hysteresis effects in a storage ring using precision tune measurement

Hao

Mikhailov

et al. 2016

Chinese Phys. C

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With advances in accelerator science and technology in the recent decades, the accelerator community has focused on the development of next-generation light sources, for example the diffraction-limited storage rings (DLSRs), which requires precision control of the electron beam energy and betatron tunes. This work is aimed at understanding magnet hysteresis effects on the electron beam energy and lattice focusing in the circular accelerators, and developing new methods to gain better control of these effects. In this paper, we will report our recent experimental study of the magnetic hysteresis effects and their impacts on the Duke storage ring lattice using the transverse feedback based precision tune measurement system. The major magnet hysteresis effects associated with magnet normalization and lattice ramping are carefully studied to determine an effective procedure for lattice preparation while maintaining a high degree of reproducibility of lattice focusing. The local hysteresis effects are also studied by measuring the betatron tune shifts resulted from adjusting the setting of a quadrupole. A new technique has been developed to precisely recover the focusing strength of the quadrupole by returning it to a proper setting to overcome the local hysteresis effect.

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Section: Introductionmentioning

confidence: 99%

Study of magnetic hysteresis effects in a storage ring using precision tune measurement

Hao

Mikhailov

et al. 2016

Chinese Phys. C

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“…The method proposed for electron colliders more than thirty years ago to overcome this problem [7,8] has been very successfully applied at the VEPP accelerator of the BINP at Novosibirsk to measure the masses of a wide variety of mesons from the φ to the Υ [9]. The technique was further developed at DORIS in Hamburg [10] and CESR in Cornell [11] as well as LEP at CERN [12].…”

Section: Introductionmentioning

confidence: 99%

High precision beam momentum determination in a synchrotron using a spin resonance method

Goslawski

Khoukaz

Gebel

et al. 2010

EPJ Web of Conferences

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Abstract. In order to measure the mass of the η meson with high accuracy using the d p → 3 He η reaction, the momentum of the circulating deuteron beam in the Cooler Synchrotron COSY of the Forschungszentrum Jülich has to be determined with unprecedented precision. This has been achieved by studying the spin dynamics of the polarized deuteron beam. By depolarizing the beam through the use of an artificially induced spin resonance, it was possible to evaluate its momentum p with a precision of ∆p/p < 10 −4 for a momentum of roughly 3 GeV/c.

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