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17 results on '"Deriy, B."'

1. The new Magnetic Measurement System at the Advanced Photon Source

Author

Eidelman, Yu., Deriy, B., Makarov, O., and Vasserman, I.

Subjects
High Energy Physics - Experiment
Abstract

A new system for precise measurements of the field integrals and multipole components of the APS magnetic insertion devices is described. A stretched coil is used to measure magnetic field characteristics. The hardware includes a number of servomotors to move (translate or rotate) the coil and a fast data acquisition board to measure the coil signal. A PC under Linux is used as a control workstation. The user interface is written as a Tcl/tk script. The hardware is accessed from the script through a shared C-library. A description of the hardware system and the control program is given., Comment: 3 pages, 5 figures, paper 3271 submitted to ICALEPCS 2001 Conference

Published
2001

2. Exponential Gain and Saturation of a Self-Amplified Spontaneous Emission Free-Electron Laser

Author

Milton, S. V., Gluskin, E., Arnold, N. D., Benson, C., Berg, W., Biedron, S. G., Borland, M., Dejus, R. J., Den Hartog, P. K., Deriy, B., Erdmann, M., Eidelman, Y. I., Hahne, M. W., Huang, Z., Lewellen, J. W., Li, Y., Lumpkin, A. H., Makarov, O., Moog, E. R., Nassiri, A., Sajaev, V., Soliday, R., Tieman, B. J., Trakhtenberg, E. M., Travish, G., Vasserman, I. B., Vinokurov, N. A., Wang, X. J., Wiemerslage, G., and Yang, B. X.

Published
2001

3. Present status and recent results from the APS SASE FEL

Author

Lewellen, J.W., Milton, S.V., Gluskin, E., Arnold, N.D., Benson, C., Berg, W., Biedron, S.G., Borland, M., Chae, Y.-C., Dejus, R.J., Hartog, P.K.Den, Deriy, B., Erdmann, M., Eidelman, Y.I., Hahne, M.W., Huang, Z., Kim, K.-J., Li, Y., Lumpkin, A.H., Makarov, O., Moog, E.R., Nassiri, A., Sajaev, V., Soliday, R., Tieman, B.J., Trakhtenberg, E.M., Vasserman, I.B., Vinokurov, N.A., Wiemerslage, G., and Yang, B.X.

Published
2002
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6. Self-amplified spontaneous emission saturation at the Advanced Photon Source free-electron laser (abstract) (invited)

Author

Moog, E. R., primary, Milton, S. V., additional, Arnold, N. D., additional, Benson, C., additional, Berg, W., additional, Biedron, S. G., additional, Borland, M., additional, Chae, Y.-C., additional, Dejus, R. J., additional, Den Hartog, P. K., additional, Deriy, B., additional, Erdmann, M., additional, Gluskin, E., additional, Huang, Z., additional, Kim, K.-J., additional, Lewellen, J. W., additional, Li, Y., additional, Lumpkin, A. H., additional, Makarov, O., additional, Nassiri, A., additional, Sajaev, V., additional, Soliday, R., additional, Tieman, B. J., additional, Trakhtenberg, E. M., additional, Travish, G., additional, Vasserman, I. B., additional, Vinokurov, N. A., additional, Wiemerslage, G., additional, and Yang, B. X., additional

Published
2002
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8. An electromagnetic helical undulator for polarized x-rays.

Author

Gluskin, E., Vinokurov, N., Tcheskidov, V., Medvedko, A., Evtushenko, Yu., Kolmogorov, V., Vobly, P., Antokhin, E., Ivanov, P., Vasserman, I. B., Trakhtenberg, E. M., Den Hartog, P. K., Deriy, B., Erdmann, M., Makarov, O., and Moog, E. R.

Subjects
WIGGLER magnets, X-ray polarization, MAGNETIC fields
Abstract

Linearly and circularly polarized x-rays have been very successfully applied to the study of the properties of materials. Many applications can benefit from the availability of energy-tunable, high-brilliance x-ray beams with adjustable polarization properties. A helical undulator that can generate beams of variable (linear to circular) polarization has been designed and built by the Budker Institute of Nuclear Physics and the Advanced Photon Source. The first harmonic of this 12.8-cm-period device will cover the energy range from 0.4 keV to 3.5 keV. An important feature of this fully electromagnetic device is that it will allow us to generate 100% horizontally (K[sub x]=0) or vertically (K[sub y]=0) plane-polarized radiation, which will enable many experiments otherwise not technically feasible. With symmetric deflection parameters (K[sub x]=K[sub y]), the on-axis radiation will be circularly polarized, with a user-selectable handedness. The polarization can be changed at rates up to 10 Hz. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2000

9. A new gap separation mechanism for APS insertion devices.

Author

Trakhtenberg, E. M., Tcheskidov, V. G., Den Hartog, P. K., Deriy, B. N., Erdmann, M., Makarov, O. A., and Moog, E. R.

Subjects
SYNCHROTRON radiation sources, WIGGLER magnets, STORAGE rings, SERVOMECHANISMS
Abstract

A new gap separation mechanism for use with the standard Advanced Photon Source (APS) 3.3-cm-period undulator magnetic structures has been designed and built, and the first system has been installed in the APS storage ring. The system allows a minimum magnetic gap of 10 mm for use with the APS 8-mm insertion device vacuum chambers. The mechanism is a bolted steel frame structure with a simple 4-motor mechanical drive train. The control system uses servomotors with incremental rotary encoders and virtual absolute linear encoders. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2000

10. Observation of Self-Amplified Spontaneous Emission and Exponential Growth at 530 nm

Author

Milton, S. V., primary, Gluskin, E., additional, Biedron, S. G., additional, Dejus, R. J., additional, Den Hartog, P. K., additional, Galayda, J. N., additional, Kim, K.-J., additional, Lewellen, J. W., additional, Moog, E. R., additional, Sajaev, V., additional, Sereno, N. S., additional, Travish, G., additional, Vinokurov, N. A., additional, Arnold, N. D., additional, Benson, C., additional, Berg, W., additional, Biggs, J. A., additional, Borland, M., additional, Carwardine, J. A., additional, Chae, Y.-C., additional, Decker, G., additional, Deriy, B. N., additional, Erdmann, M. J., additional, Friedsam, H., additional, Gold, C., additional, Grelick, A. E., additional, Hahne, M. W., additional, Harkay, K. C., additional, Huang, Z., additional, Lessner, E. S., additional, Lill, R. M., additional, Lumpkin, A. H., additional, Makarov, O. A., additional, Markovich, G. M., additional, Meyer, D., additional, Nassiri, A., additional, Noonan, J. R., additional, Pasky, S. J., additional, Pile, G., additional, Smith, T. L., additional, Soliday, R., additional, Tieman, B. J., additional, Trakhtenberg, E. M., additional, Trento, G. F., additional, Vasserman, I. B., additional, Walters, D. R., additional, Wang, X. J., additional, Wiemerslage, G., additional, Xu, S., additional, and Yang, B.-X., additional

Published
2000
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11. FEL development at the Advanced Photon Source

Author

Milton, Stephen V., primary, Arnold, N. D., additional, Benson, Christa, additional, Berg, S., additional, Berg, William J., additional, Biedron, Sandra G., additional, Chae, Y. C., additional, Crosbie, E. A., additional, Decker, G., additional, Deriy, B., additional, Dejus, Roger J., additional, Hartog, Pat D., additional, Dortwegt, R., additional, Erdmann, M., additional, Huang, Zhirong, additional, Friedsam, H., additional, Freund, Henry P., additional, Galayda, J. N., additional, Gluskin, Efim S., additional, Goeppner, G. A., additional, Grelick, A., additional, Jones, J., additional, Kang, Y. W., additional, Kim, Kwang J., additional, Kim, S., additional, Kinoshita, Kim, additional, Lill, B., additional, Lewellen IV, John W., additional, Lumpkin, Alex H., additional, Markovich, G. M., additional, Makarov, Oleg A., additional, Moog, E. R., additional, Nassiri, A., additional, Ogurtsov, V., additional, Pasky, S., additional, Power, J., additional, Tieman, Brian, additional, Trakhtenberg, Emil M., additional, Travish, Gil, additional, Vasserman, I. B., additional, Vinokurov, Nikolai A., additional, Walters, D. R., additional, Wang, Jin, additional, Wang, Xi J., additional, Yang, Bingxin X., additional, and Xu, Shenglan, additional

Published
1999
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17. Voltage-dependent translocation of R18 and DiI across lipid bilayers leads to fluorescence changes.

Author

Melikyan GB, Deriy BN, Ok DC, and Cohen FS

Subjects
Iodides chemistry, Lipid Bilayers, Membrane Lipids chemistry, Membranes, Artificial, Phosphatidylcholines chemistry, Solubility, Spectrometry, Fluorescence, Carbocyanines chemistry, Fluorescent Dyes chemistry, Membrane Potentials, Rhodamines chemistry
Abstract

We show that the lipophilic, cationic fluorescent dyes R18 and Dil translocate from one monolayer of a phospholipid bilayer membrane to the other in a concentration and voltage-dependent manner. When the probes were incorporated into voltage-clamped planar membranes and potentials were applied, displacement currents resulted. The charged probes sensed a large fraction of the applied field. When these probes were added to only one monolayer, displacement currents were symmetrical around 0 mV, indicating that the probes distributed equally between the two monolayers. Charge translocation required that the bilayer be fluid. When membranes were in a condensed gel phase, displacement currents were not observed; raising the temperature to above the gel-liquid crystalline transition restored the currents. Translocation of R18 was also shown by fluorescence measurements. When R18 was in the bilayer at high, self-quenching concentrations, voltage pulses led to voltage-dependent fluorescence changes. The kinetics of the fluorescence changes and charge translocations correlated. Adding the quencher I- to one aqueous phase caused fluorescence to decrease or increase when voltage moved R18 toward or away from the quencher at low, nonquenching concentrations of R18. In contrast to R18, Dil incorporated into bilayers was a carrier fo I-, and hence I- altered Dil currents. Voltage-driven translocations allow R18 and Dil to be used to probe membrane potential changes.

Published
1996
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