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Showing 1 to 20 of 51 for “"storage ring"”.
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Laser-trapped Atoms as a Precision Target for the Heavy-Ion Storage Ring TSR
… has been installed inside the Heidelberg Test Storage Ring TSR. Since the trapped atoms are very well localized and their thermal energy can be neglected they are ideally suited to study collisions with stored heavy ions at energies of some MeV/u. Measurements of collision cross sections for …
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A measurement of the magnetic field systematic correction to the muon anomalous magnetic moment associated with muon phase space in experiment BNL E821
Using a muon storage ring located at Brookhaven National Laboratory (BNL), the first year of a continuing four year effort to measure the anomalous magnetic moment of the muon to 0.35 ppm has been completed. The measurement hopes to provide a direct experimental determination of the single loop …
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Competition between Reaction Channels in Electron Collisions of the Hydrogen Molecular Ion HD+
… and on an absolute scale, at the heavy-ion storage ring TSR (Max-Planck-Institut für Kernphysik). The measured cross-section shows a previously unknown structure at electron energies between 1-3 eV, in correlation with the energy thresholds for the opening of additional channels in the …
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Production of cold electron beams for collision experiments with stored ions
… (ETS) as a dedicated electron target for the storage ring TSR has been mounted and tested. With the help of this device electron collision experiments on a stored ion beam can be performed independently of the phase space cooling (electron cooling) of this beam. Preparatory measurements to …
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Study of photon production in e + e - collisions at Tristan
… to 58 GeV with the AMY detector at the KEK e+e- storage ring TRISTAN.
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Study of Ds and D*s mesons
… were collected with the Mark III detector at the storage ring SPEAR at the Stanford Linear Accelerator Center. [Abstract continued in document]
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Coherence Control and Measurement at the CLS Using X-ray Interferometry
As synchrotron light source storage rings transition to multi-bend achromat (MBA) lattices for higher brightness and coherence, emerging challenges arise in beam diagnostic tools that accurately monitor and control the spatial degree of coherence. MBA lattice designs in modern fourth generation …
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Experimental Test of Relativistic Time Dilation by Laser Spectroscopy of Fast Ions
… spectroscopy on a fast (v=0.064c) ion beam in a storage ring have been investigated. The first technique, Lambda-spectroscopy on a closed Lambda-type three-level system, suffered from a strong, hitherto unaccounted line broadening in a previous test experiment. In this work this line broadening …
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A Search for CP Violation in and a Dalitz Analysis of Neutral D Mesons Decaying to Pions, Antipions, and Neutral Pions in CLEO II.V
… the CLEO II.V detector at the Cornell Electron Storage Ring, we study the resonant substructure of the Cabibbo suppressed decay D 0 → pi+pi-pi 0. We observe significant contributions from the rho- pi+, rho+pi-, rho 0pi0, and non-resonant channels, and present results of the amplitudes, …
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Beam Dynamics Challenges in the Muon g-2 Experiment
… accomplished by injecting muons into a magnetic storage ring and precisely measuring two observable frequencies: $\omega_a$, the muons' anomalous precession frequency, and $\tilde{\omega}'_p$, the precession frequency of protons which determines the magnetic field strength experienced by the …
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Observations of new cabibbo suppressed decays of the D meson
… using the Mark III detector at the SPEAR e+e-storage ring. Observations of four new decay modes are presented along with upper limits for three others We have measured a cross section times branching ratio of .035 +-.008 +-.004 nb for the ""color suppressed"" decay D+ -> Phi pi+. We observe a …
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Search for CP violation in D-meson decays
Using data from the Mark III detector at the e+e- storage ring at SPEAR, an upper limit of .30 at the 90% confidence level is set on the magnitude of the CP asymmetry Acp for the CP eigenstate no -+ K+ K-. This falls within the preexisting limit of .45 @90% CL set by FNAL experiment E691 using the …
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D(0) Decays From Electron-Positron Collisions: Precision, Rare and Substructure Results
… the CLEO II detector at the Cornell Electron Storage Ring. First, a precision measurement of the ratio of the D0 → K-pi +pi0 branching fraction to that of D 0 → K-pi+ is performed resulting in the best measurement to date. Second, a detailed high statistics study of the underlying …
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Dº decays from e+e- collisions: precision, rare and substructure results
… the CLEO II detector at the Cornell Electron Storage Ring. First, a precision measurement of the ratio of the Dº → K-π+πº branching fraction to that of Dº → K-π+ is performed resulting in the best measurement to date. Second, a detailed high statistics study of the underlying resonant …
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"Non- D`D decays of the y"" (3770)"
… collected by the Mark III detector at the SPEAR storage ring, at the Stanford Linear Accelerator Center. To be more specific, a search for inclusive p, A, and c)l decay modes of the '1'""(3770) is performed in this data sample. Backgrounds due to the decays of the radiatively produced '1''(3686) …
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Inverse Compton Light Source: A Compact Design Proposal
… was constructed by Lyncean Technologies using a storage ring to produce the electron beam used to scatter the incident laser beam. By instead using a linear accelerator system forthe electron beam, a significant increase in X-ray beam quality is possible, though even subsequent designs also …
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Measurement of bar{B0} Meson Properties Via Partial Reconstruction of the Decay bar{B0} -> D*+ l- ar{nu}
… Upsilon(4S) resonance at the Cornell Electron Storage Ring, several properties of B mesons are measured using a partially reconstructed tag of the decay mode bar{B0} -> D*+ l- bar{nu}. Using 2.38 fb**{-1} of on-resonance data and the averaged B meson semileptonic branching fraction through …
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Non-D meson anti D meson decays of the Psi'' meson(3770)
… collected by the Mark III detector at the SPEAR storage ring, at the Stanford Linear Accelerator Center. To be more specific, a search for inclusive p, $\bar \Lambda$, and $\phi$ decay modes of the $\Psi\sp{\prime\prime}$(3770) is performed in this data sample. Backgrounds due to the decays of …
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Search for CP violation in D-meson decays
… from the Mark III detector at the $e\sp+e\sp-$ storage ring at SPEAR, an upper limit of.30 at the 90% confidence level is set on the magnitude of the CP asymmetry $A\sb{cp}$ for the CP eigenstate $D\sp0\to K\sp+K\sp-.$ This falls within the preexisting limit of.45 @ 90% CL set by FNAL experiment …
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