Zobrazeno 1 - 10
of 48
pro vyhledávání: '"R. Biscardi"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 366:26-30
The lifetime in the NSLS VUV ring is limited by intra-bunch scattering (Touschek scattering). A second RF cavity was added to lengthen the electron bunch, thereby reducing the Touschek loss rate. Initially, the cavity was operated in a “passive”
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 319:8-17
In the past two years, the accelerator developments which have had a major impact on operations of the VUV and X-ray storage rings have been twofold. On the VUV ring a fourth harmonic rf cavity lengthens the electron bunch and thereby increases the T
Autor:
Erik D. Johnson, S. Dierker, N. Towne, John Skaritka, Brian Sheehy, J.M. Wang, Steven L. Hulbert, Alexei Blednykh, R. Biscardi, Shailendra Chouhan, Xuelong Wang, Timur Shaftan, L. Carr, George Rakowsky, James B. Murphy, Igor Pinayev, Samuel Krinsky, Johan Bengtsson, James Rose, William R. Casey, C-C. Kao, Boris Podobedov, S. Pjerov, S.L. Kramer, E. Haas, R. Heese, Li-Hua Yu
Publikováno v:
Proceedings of the 2005 Particle Accelerator Conference.
The National Synchrotron Light Source at BNL was the first dedicated light source facility and it has now operated for more than 20 years. During this time the user community has grown to more than 2400 users annually. To insure that this vibrant use
Publikováno v:
Review of Scientific Instruments. 66:1856-1858
The effects of audio sidebands from the main rf of the NSLS VUV storage ring on beam motion and specifically on spectral reproducibility in the infrared region were investigated. For this spectral region it is advantageous to use Michelson interferom
Autor:
E. Bozoki, G. Vignola, R. Biscardi, O. Singh, R.J. Nawrocky, J. Bittner, Samuel Krinsky, John Galayda, Li-Hua Yu
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
A global closed-orbit feedback experiment based upon a real-time harmonic analysis of both the orbit movement and the correction magnetic fields is described. The harmonic feedback system was constructed and tested on the 750 MeV vacuum ultraviolet r
Autor:
J. Bittner, R. Biscardi
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
The NSLS (National Synchrotron Light Source) storage rings use sets of four button electrodes to determine the transverse position of the stored electron beam in the vacuum chamber. By means of GaAs switches, the 211 MHz component of the induced sign
Autor:
S. Buda, J. Keane, S.M. Hanna, R. Biscardi, R. D'Alsace, P. Mortazavi, W. Broome, G. Ramirez, M. Thomas, J.M. Wang
Publikováno v:
Proceedings of International Conference on Particle Accelerators.
Presently (Dec. 1992) three RF systems power the electron beam at the NSLS X-ray storage ring to 250 mA at 2.58 GeV. A fourth RF cavity and system is being installed to increase the machine reliability over pre-shutdown operational conditions (3 cavi
Autor:
I. So, J. Smith, R. Biscardi, J. Dabrowski, M. Thomas, R.J. Nawrocky, J. Rothman, S. Ramamoorthy, G. Decker, J. Flannigan
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
A description is given of the design and operation of an active interlock system which has been installed in the NSLS (US National Synchrotron Light Source) X-ray electron storage ring to protect the vacuum chamber from thermal damage by missteered h
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
The design of a 700 MeV superconducting compact electron storage ring for applied X-ray lithography is in its final stage. This succeeds a 200 MeV warm dipole model constructed and now in operation at Brookhaven National Laboratory (BNL). RF cavities
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
The authors describe the basic theory and experimental results on bunch lengthening at the National Synchrotron Light Source (NSLS) vacuum ultraviolet (VUV) ring. Emphasis is placed on results of experiments conducted since the last study. A fourth h