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in creator/contributor: "Krinsky, S."

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Wiggler, undulator, and free-electron laser-radiation sources development at the National Synchrotron Light Source

An overview is presented of the special radiation sources development at the NSLS for incorporation in a 2.5 GeV X-ray storage ring and a 700 MeV vuv storage ring. This includes a superconducting high field multipole wiggler, lambda/sub c/ = 0.5A; a permanent magnet wiggler, lambda/sub c/ = 2.0A; a maximum photon energy undulator (5 to 7 keV); an undulator for a soft X-ray line or continuum spectrum and a free electron laser source tunable in the 2500 to 4500A region. Source characteristics and… more

Date: January 1, 1982

Creator: Hsieh, H.; Krinsky, S.; Luccio, A.; Pellegrini, C. & van Steenbergen, A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Proposed uv-FEL user facility at BNL

The NSLS at Brookhaven National Laboratory is proposing the construction of a UV-FEL operating in the wavelength range from visible to 750{Angstrom}. Nano-Coulomb electron pulses will be generated at a laser photo-cathode RF gun at a repetition rate of 10 KHz. The 6 ps pulses will be accelerated to 250 MeV in a superconducting linac. The FEL output will serve four stations with independent wavelength tuning, using two wigglers and two rotating mirror beam switches. Seed radiation for the FEL am… more

Date: January 1, 1991

Creator: Ben-Zvi, Ilan; Di Mauro, L. F.; Krinsky, S.; White, M. G.; Yu, L. H.; Batchelor, K. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Conventional magnet storage rings for x-ray lithography

A first pass at the design of a conventional magnet storage ring for x-ray lithogrphy is presented. Electron beam size and power specifications are given, followed by a first pass at a lattice - a 4-fold symmetric, gradient FODO cell lattice using B = 1.6 Tesla C-magnets. (LEW)

Date: October 1, 1986

Creator: Bassetti, M.; Batchelor, K.; Galayda, J.; Halama, H.; Heese, R.; Hsieh, H. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Characteristics of synchrotron radiation and of its sources

Synchrotron light emission and the classical relativistic electromagnetic theory describing it are reviewed. The electron optics of storage rings are considered in some detail, beginning with the ideal electron orbit and the distribution which electrons take around it. This is folded with the process of synchrotron light emission itself to define the effective photon source. The predictions of classical relativistic theory are compared with experiment, and one finds agreement within the experim… more

Date: January 1, 1979

Creator: Krinsky, S.; Perlman, M. L. & Watson, R. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Resonant impedance of bellows above cutoff

The perturbation method of Chatard-Moulin and Papiernik is used to calculate the longitudinal and transverse impedances, Z(..omega..) and Z/sub perpendicular/(..omega..), of a bellows. The bellows shape is defined by its radius a(z) = a (1 + epsilons(z)), where a is the mean radius, epsilon a small parameter, and s(z) describes the convolution of the bellows. A finite wall conductivity is considered and the resonant contribution to the impedance above the cutoff frequency of the unperturbed cha… more

Date: January 1, 1980

Creator: Krinsky, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Polarized wiggler for NSLS x-ray ring design considerations

We examine the properties of an elliptically polarized wiggler that will generate circularly polarized photons with energy spectrum of 3--12 KeV. The vertical wiggler magnetic field is produced by permanent magnets while the horizontal wiggler field is generated by electric coils capable of AC excitation. The radiation parameters of the wiggler are presented, including photon flux, circular and linear polarization and spectrum. These parameters are compared to the synchrotron radiation from a b… more

Date: March 1, 1992

Creator: Friedman, A.; Krinsky, S. & Blum, E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Storage Ring Development at the National Synchrotron Light Source

This report contains papers on the following topics: Transverse Beam Profile Monitor; Bunch Length Measurements in the VUV Storage Ring; Photoelectric Effect Photon Beam Position Monitors; RF Receivers for Processing Electron Beam Pick-up Electrode Signals; Real-Time Global Orbit Feedback Systems; Local Orbit Feedback; Active Interlock System for High Power Insertion Devices in the X-ray Ring; Bunch Lengthening Cavity for the VUV Ring; SXLS Storage Ring Design.

Date: September 1, 1991

Creator: Krinsky, S.; Bittner, J.; Fauchet, A. M.; Johnson, E. D.; Keane, J.; Murphy, J. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Ring Energy Selection and Extra Long Straight Sections for the Advanced Photon Source

Recommended criteria are given for the performance of Advanced Photon Source (APS), taking into consideration undulator tunability criteria and their relationship to the storage ring energy and undulator gap, length of straight sections.

Date: April 1987

Creator: Brown, G.; Cho, Y.; Hastings, J.; Krinsky, S.; Moncton, D. E.; Shenoy, G. K. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Experience with synchrotron radiation sources

The development of synchrotron radiation sources is discussed, emphasizing characteristics important for x-ray microscopy. Bending magnets, wigglers and undulators are considered as sources of radiation. Operating experience at the national Synchrotron Light Source on the VUV and XRAY storage rings is reviewed, with particular consideration given to achieved current and lifetime, transverse bunch dimensions, and orbit stability. 6 refs., 3 figs.

Date: January 1, 1987

Creator: Krinsky, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Reduction of FEL Gain Due to Wiggler Errors

For an FEL operating in the exponential regime before saturation, we consider the effect on the gain of longitudinal velocity variations arising from wiggler field errors. The average gain reduction and the width of the output power distribution are expressed in terms of the mean square average of the ponderomotive phase shift per gain length. A scheme for correcting the electron trajectory using position monitors and dipole correctors is analyzed. Analytic results are compared with numerical s… more

Date: January 1, 1991

Creator: Yu, L. H.; Krinsky, S.; Friedman, A.; Gluckstern, R. L. & van Zeijts, J. B. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Physics and technology challenges of ultra low emittance synchrotron light sources

There is a great activity throughout the world in the development of synchrotron radiation facilities to serve as sources for basic and applied research. We discuss some of the the opportunities and challenges presented by the development of ever higher brightness synchrotron radiation sources. 39 refs.

Date: January 1, 1991

Creator: Krinsky, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Study for a 6 GeV undulator based synchrotron radiation source

A partial study for a 6 GeV undulator based synchrotron radiation source for production of high brightness undulator radiation, in the A region, is presented. The basic lattice adopted for the storage ring is a hybrid FODO Chasman-Green lattice, making use of gradient in the dipoles. We discuss also the e beam current limits and the injection parameters.

Date: January 1, 1985

Creator: Vignola, G.; Barton, M.; Blumberg, R.; Galayda, J.; Krinsky, S.; Luccio, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Measurement of the longitudinal parameters of an electron beam in a storage ring

We discuss the determination of the longitudinal parameters of a bunched beam of electrons or positrons circulating in a storage ring. From the analysis of the beam current observed at a fixed azimuthal location, one can learn much about the longitudinal behavior. We present an elementary analysis of the time-dependence of the current. In particular, we discuss the determination of the average current, bunch length, synchrotron oscillation frequency, and the coherent synchrotron oscillation mod… more

Date: January 1, 1989

Creator: Krinsky, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Design status of the 2. 5 GeV National Synchrotron Light Source x-ray ring

The present state of the design of the 2.5 GeV electron storage ring for the National Synchrotron Light Source is described. This ring will serve as a dedicated source of synchrotron radiation in the wavelength range 0.1 A to 30 A. While maintaining the basic high brigtness features of the eariler developed lattice structure, recent work resulted in a more economical magnet system, is simplified chromaticity corrections, and improved distribution of the X-ray beam lines. In addition, the adequa… more

Date: January 1, 1979

Creator: Krinsky, S.; Blumberg, L.; Bittner, J.; Galayda, J.; Heese, R.; Schuchman, J.C. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

National synchrotron light source VUV storage ring

A 700 MeV electron storage ring designed for synchrotron radiation applications is described. Lattice and stability calculations are presented and the vacuum, correction and injection systems are discussed.

Date: January 1, 1979

Creator: Blumberg, L.; Bittner, J.; Galayda, J.; Heese, R.; Krinsky, S.; Schuchman, J. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A superconducting short period undulator for a harmonic generation FEL experiment

A three stage superconducting (SC) undulator for a high gain harmonic generation (HGE) FEL experiment in the infrared is under construction at the NSLS in collaboration with Grumman Corporation. A novel undulator technology suitable for short period (6--40mm) undulators will be employed for all three stages, the modulator, the dispersive section and the radiator. The undulator triples the frequency of a 10.4[mu]m CO[sub 2] seed laser. So far a 27 period (one third of the final radiator) prototy… more

Date: January 1, 1993

Creator: Ingold, G.; Solomon, L.; Ben-Zvi, Ilan; Krinsky, S.; Li, D.; Lynch, D. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Undulator for the 700 MeV VUV-Ring of the National Synchrotron Light Source

The magnet parameters and the spectrum of the emitted radiation are considered for an undulator to be used in the VUV-Ring of the NSLS.

Date: January 1, 1979

Creator: Krinsky, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Undulator based synchrotron radiation source in the 5-30 eV spectral region

There has been recent interest in the utilization of high intensity radiation in the 5-30 eV spectral region. Applications include angle resolved photoemission, photochemistry, and radiation oncology. Here we present the design of a 500 MeV electron storage ring with long insertions for undulators. The ring is designed to provide an emittance of 0.1 mm-mrad, an average current of 1 Amp and an electron beam lifetime of greater than 3 hrs. The undulators operating near K{equals}1, yield 10{sup 15… more

Date: January 1, 1991

Creator: Zhang, Xiaohao; Murphy, J.B. & Krinsky, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Experience with Phase II insertion devices in the x-ray ring

The installation of Phase II insertion devices in the NSLS x-ray ring was completed in February 1989, when the hybrid wiggler magnet (HBW) for beam line X21 and the superconducting wiggler (SCW) for beam line X17 were installed. Prior to this time, the soft x-ray undulator (SXU) and X1, another hybrid wiggler at X25, and the ten period mini-undulator at X13 had been installed. 8 refs., 4 figs., 2 tabs.

Date: January 1, 1989

Creator: Decker, G.; Galayda, J.; Krinsky, S. & Solomon, L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Studies on the undulator for the free electron laser experiment at the National Synchrotron Light Source

Undulator magnets are used in connection with particle (typically electron) storage rings to enhance the spectrum of synchrotron radiation and are a basic component of free electron lasers. Two configurations are common: helical undulators, for which the magnetic field on the axis is constant in modulus and rotates around the axis as we proceed along it; and transverse undulators, that have a median plane of symmetry. The orientation of the field for a transverse geometry is always the same on … more

Date: January 1, 1981

Creator: Luccio, A. & Krinsky, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Transverse Correlations in Start-Up of a Free Electron Laser From Noise

Linearized Vlasov-Maxwell equations are used to derive a partial differential equation determining the 3-dimensional slowly varying envelope function of the radiated electric field. The equation is solved analytically. From the correlation function <E(z,r,t) E*(z',r',t)> of the electric field averaged over the stochastic ansemble describing the initial shot noise in the beam, we compute the longitudinal and transverse correlation lengths sigma/sub L/ and sigma/sub T/. The radiated power S per u… more

Date: March 1, 1986

Creator: Yu, L. H. & Krinsky, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Design of a harmonic generation FEL experiment at BNL

We present design parameters of a harmonic generation FEL experiment to be carried out at the Accelerator Test Facility (ATF) at BNL. This experiment out as a proof-of-principle for the proposed UV-FEL User's Facility at BNL. In the experiment we plan to triple the frequency of a CO{sub 2} seed laser by utilizing two superconducting wigglers and a dispersive section. The first wiggler will be used in conjunction with the CO{sub 2} seed laser to generate a ponderomotive force that will bunch the… more

Date: January 1, 1991

Creator: Ben-Zvi, Ilan; Friedman, A.; Hung, C. M.; Ingold, G.; Krinsky, S.; Yang, K. M. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Real Time Closed Orbit Correction System

We describe a global closed orbit feedback experiment, based upon a real time harmonic analysis of both the orbit movement and the correction magnetic fields. The feedback forces the coefficients of a few harmonics near the betatron tune to vanish, and significantly improves the global orbit stability. We present the results of the experiment in the UV ring using 4 detectors and 4 trims, in which maximum observed displacement was reduced by a factor of between 3 and 4. 4 refs., 3 figs.

Date: January 1, 1989

Creator: Yu, L. H.; Biscardi, R.; Bittner, J.; Bozoki, E.; Galayda, J.; Krinsky, S. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Betatron oscillations in a free electron laser

A dispersion relation is used to study the effect of betatron oscillations on the gain of a guided mode in a free electron laser operating in the high-gain regime before saturation. We assume the electron beam to be matched to the natural focussing of a helical wiggler, and our treatment includes the effects of the finite energy spread and emittance of the electron beam, the transverse gradient in the wiggler, and the variation of the electromagnetic wave transverse phase experienced by the ele… more

Date: November 1, 1987

Creator: Yu, Li-Hua & Krinsky, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department