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The U5. 0 Undulator for the ALS

Description: the U5.0 Undulator, and 89 period, 5 cm period length, 4.6 m long insertion device has been designed, is being fabricated and is scheduled for completion in early 1992. This undulator will be the first high brightness source, in the 50 to 1500 eV range, for the Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory. A hybrid magnetic configuration using Nd-Fe-B permanent magnet material and vanadium permendur poles has been selected to achieve the field quality needed to meet performan… more
Date: July 15, 1991
Creator: Hoyer, E.; Chin, J.; Halbach, K.; Hassenzahl, W.V.; Humphries, D.; Kincaid, B. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Polarization of a stored electron beam

Description: Synchrotron radiation by a point charge is a familiar subject in classical electrodynamics. Perhaps less familiar are some quantum mechanical corrections to the classical results. Some of those quantum aspects of synchrotron radiation are described. One of the quantum effects leads to the expectation that electrons in a storage ring will polarize themselves to 92% - a surprisingly high value. A semi-classical derivation of the quantum effects is given. An effort has been made to minimize the ne… more
Date: July 1, 1981
Creator: Chao, A.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiation safety interlocks at the NSLS

Description: The function of the NSLS interlock systems is to insure that no one is in an area where there is hazardous radiation, and to turn off the radiation source if a person somehow gains access to such an area. The interlock systems for the high hazard areas meet the following design requirements: (1) The system is redundant, that is no single failure can render the system unsafe. This is done by providing 2 independent systems or circuits; (2) In so far as possible, the two circuits are physically d… more
Date: July 1, 1985
Creator: Dickinson, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Soft-x-ray spectroscopy study of nanoscale materials

Description: The ability to control the particle size and morphology of nanoparticles is of crucial importance nowadays both from a fundamental and industrial point of view considering the tremendous amount of high-tech applications. Controlling the crystallographic structure and the arrangement of atoms along the surface of nanostructured material will determine most of its physical properties. In general, electronic structure ultimately determines the properties of matter. Soft X-ray spectroscopy has some… more
Date: July 30, 2005
Creator: Guo, J.-H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Progress and prospects at the national synchrotron light source (NSLS)

Description: This report discusses the NSLS project from inception until the present. The commencement and motivation for the program are considered from the viewpoint of the needs of various experiments and the concepts of the Basic Source is introduced. The Basic Source has high brightness and tunability within the ranges 0 to 0.3 keV and 3 to 20 keV. The inclusion of tunability implies the use of monochromators and the role of these is discussed. The Basic Source is important because it satisfies a very … more
Date: July 1, 1981
Creator: Howells, M.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Use of multielement detector systems with synchrotron x-ray sources

Description: The extremely high intensity and pulsed structure of synchrotron radiation x-ray sources put very demanding requirements on associated x-ray detectors. In current detector systems, trade-offs must be made between the efficiency, energy resolution, counting rate capability and the spatial resolution. Two detector systems are described which illustrate the optimization of these parameters for different applications of synchrotron radiation. One system is a segmented 16 channel multiwire proportio… more
Date: July 1, 1981
Creator: Thompson, A. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Multilayer-Coated Mirrors as Power Filters in Synchrotron Radiation Beamlines

Description: Multilayer-coated mirrors, rather than conventional total-reflection mirrors, have been proposed as a means to reduce power incident on the first optical element of high resolution monochromators. We have designed, fabricated, installed and characterized a multilayer pre-mirror specifically for the 800 to 4000 eV range for the X24-A bending magnet beamline at the National Synchrotron Light Source. Various aspects of this application are discussed, including power and thermal considerations, bea… more
Date: July 1, 1987
Creator: Kortright, J. B.; Plag, P.; Perera, R. C. C.; Cowan, P. L.; Lindle, D. W. & Karlin, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Varied line-space gratings and applications

Description: This paper presents a straightforward analytical and numerical method for the design of a specific type of varied line-space grating system. The mathematical development will assume plane or nearly-plane spherical gratings which are illuminated by convergent light, which covers many interesting cases for synchrotron radiation. The gratings discussed will have straight grooves whose spacing varies across the principal plane of the grating. Focal relationships and formulae for the optical grating… more
Date: July 15, 1991
Creator: McKinney, W.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Requirements and limitations on beam quality in synchrotron radiation sources

Description: The requirements and limitations of the third generation of synchrotron radiation facilities are reviewed. These machines are designed to emit radiation of very high intensity, extreme brightness, very short pulses, and laserlike coherence. These performance goals put severe requirements on the quality of the electron or positron beams. Phenomena affecting the injection process and the beam lifetime are discussed. Gas desorption by synchrotron radiation, collective effects (coupled bunch oscill… more
Date: July 1, 1989
Creator: Cornacchia, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Accelerator physics experiments at Aladdin

Description: The Aladdin accelerator is a 1 GeV synchrotron light source located at the University of Wisconsin. The results of experimental studies of the Aladdin accelerator are described. The primary purpose of the experiments reported was to investigate reported anomalies in the behavior of the linear lattice, particularly in the vertical plane. A second goal was to estimate the ring broadband impedance. Experimental observations and interpretation of the linear properties of the Aladdin ring are descri… more
Date: July 1, 1985
Creator: Chattopadhyay, S.; Cornacchia, M.; Jackson, A. & Zisman, M. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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X-ray microscopy resource center at the Advanced Light Source

Description: An x-ray microscopy resource center for biological x-ray imaging vvill be built at the Advanced Light Source (ALS) in Berkeley. The unique high brightness of the ALS allows short exposure times and high image quality. Two microscopes, an x-ray microscope (XM) and a scanning x-ray microscope (SXM) are planned. These microscopes serve complementary needs. The XM gives images in parallel at comparable short exposure times, and the SXM is optimized for low radiation doses applied to the sample. The… more
Date: July 1, 1992
Creator: Meyer-Ilse, W.; Koike, M.; Beguiristain, R.; Maser, J. & Attwood, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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National Synchrotron Light Source safety-analysis report

Description: This document covers all of the safety issues relating to the design and operation of the storage rings and injection system of the National Synchrotron Light Source. The building systems for fire protection, access and egress are described together with air and other gaseous control or venting systems. Details of shielding against prompt bremstrahlung radiation and synchrotron radiation are described and the administrative requirements to be satisfied for operation of a beam line at the facili… more
Date: July 1, 1982
Creator: Batchelor, K. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spectrum analysis of the power line flicker induced by the electrical test of the prototype Booster dipole

Description: Testing of the prototype Booster dipole magnet at full current produced measurable disturbances of the beam position at the National Synchrotron Light Source. Power for the magnet and the NSLS are distributed from three substation transformers at Temple Place. Normally the substation configuration is for two independent 13.8 KV buses, derived from the 69 KV LILCO distribution. The buses are connected through a circuit breaker that is normally open circuited. Power for the magnet test is derived… more
Date: July 17, 1992
Creator: Meth, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synchrotron x-ray sources and new opportunities in the soil and environmental sciences

Description: This report contains the following papers: characteristics of the advanced photon source and comparison with existing synchrotron facilities; x-ray absorption spectroscopy: EXAFS and XANES -- A versatile tool to study the atomic and electronic structure of materials; applications of x-ray spectroscopy and anomalous scattering experiments in the soil and environmental sciences; X-ray fluorescence microprobe and microtomography.
Date: July 1, 1990
Creator: Schulze, D. (Purdue Univ., Lafayette, IN (USA)); Anderson, S. (Michigan State Univ., East Lansing, MI (USA)) & Mattigod, S. (Pacific Northwest Lab., Richland, WA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Calculation of Booster power requirements and power line flicker for 1. 5 GeV proton operation

Description: The Booster power requirements and power line flicker has been previously calculated for the 1 GEV proton cycle. Since then the maximum proton energy has been increased to 1.5 GEV, and the cycle period increased from 100 to 133 millisec. the design manual lists the peak magnet current as 2220A (previous value of 1672A). The maximum stored energy is increased by a factor of 1.763 and the power swing is increased by a factor of 1.32; increasing the flicker approximately by this factor. The requir… more
Date: July 17, 1992
Creator: Meth, A. & Ratti, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mirrors as power filters

Description: Multilayer mirrors offer advantages in power filtering compared to total reflection mirrors in both wiggler and undulator beams at third generation synchrotron radiation sources currently under construction. These advantages come at the expense of increased absorbed power in the mirror itself, and of added complexity of beamline optical design. This paper discusses these aspects.
Date: July 1, 1990
Creator: Kortright, J.B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Advanced Light Source at Lawrence Berkeley Laboratory: A high-brightness soft x-ray synchrotron-radiation facility

Description: The Advanced Light Source, a third-generation national synchrotron-radiation facility now under construction at the Lawrence Berkeley Laboratory, is scheduled to begin serving qualified users across a broad spectrum of research areas in the spring of 1993. Based on a low-emittance electron storage ring optimized to operate at 1.5 GeV, the ALS will have 10 long straight sections available for insertion devices (undulators and wigglers) and 24 high-quality bend-magnet ports. The short pulse width… more
Date: July 1, 1990
Creator: Schlachter, A.S. & Robinson, A.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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X-ray ring performance after spring shut down

Description: This report covers vacuum studies carried out over 4 months' period April to July 1984 including some comments on the shut down. The data rely heavily on partial pressure analysis which is used to calculate beam lifetimes. Discrepancies between these calculated values and the real lifetimes are also discussed and some explanations suggested. An attempt is made to measure synchrotron light desorption and the pumping speed of the distributed ion pumps which appear to be very small at low pressure… more
Date: July 1, 1984
Creator: Halama, H.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Report on the workshop on new directions in soft x-ray near-threshold phenomena

Description: The ''Workshop on New Directions in Soft X-Ray Near-Threshold Phenomena'' was held at the Asilomar Conference Center in Pacific Grove, CA on March 1--4, 1987. It was attended by 59 scientists from 8 countries, representing 27 institutions. Major funding for the meeting was donated by L-Division of the Lawrence Livermore National Laboratory, who hosted and organized two previous workshops on photoabsorption and scattering in the soft x-ray energy range. Additional funding was provided by the Use… more
Date: July 1, 1988
Creator: Lindle, D.W. & Perera, R.C.C. (eds.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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An intensity interferometer for soft x-rays

Description: We designed and built an intensity interferometer to characterize the spatial coherence of a soft x-ray undulator beam. The beam source size and shape can be determined from the measured coherence function. The instrument is 400 mm long and is mounted on a standard 204-mm diameter flange. This compact design is readily adaptable to other beamlines with sources of sufficient spectral brightness. Details of the interferometer design and performance are presented. We anticipate that when this tech… more
Date: July 15, 1994
Creator: Yang, L.; McNulty, I. & Gluskin, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Particle diffusion from resonance islands in Aladdin at SRC

Description: The dynamics of the beam in the resonance islands was studied on the electron storage ring Aladdin at the Synchrotron Radiation Center (SRC). The authors especially studied the horizontal third- and fourth-integral resonances driven by sextupole fields in the first and second order. A fast kicker was fired to kick the beam into one of the outboard stable islands. The beam took on a quasi-Gaussian distribution and slowly diffused out of the island. The diffusion rate and its dependence on the st… more
Date: July 1, 1993
Creator: Liu, J.; Crosbie, E.; Teng, L.; Bridges, J.; Ciarlette, D.; Kustom, R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High energy synchrotron radiation sources

Description: In the world there are now about 43 laboratories in 16 counties engaged in the operation, construction or planning of electron storage rings, from a few hundred MeV to above 10 GeV, as sources of synchrotron radiation for basic and applied research. In this report we describe the new 3rd generation high energy (i.e.; hard X-ray) sources. The first of these, the 6 GeV European Synchrotron Radiation Facility (ESRF) in Grenoble, France started operation in mid 1992. The 7 GeV Advanced Photon Sourc… more
Date: July 1, 1993
Creator: Winick, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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STUDY OF FODO STRUCTURES FOR A SYNCHROTRON LIGHT SOURCE

Description: Synchrotron radiation is a helpful tool to Investigate a wide range of physical, chemical and biological phenomena. Extremely high flux, brilliance synchrotron radiation can be achieved in low emittance electron storage rings with wigglers and undulators. The Advanced Light Source (ALS) is a synchrotron radiation source with 1.5 GeV design energy. The lattice is designed with 12 superperiods each containing a 6 m long straight section to accomodate the insertion devices. Two straight sections a… more
Date: July 1, 1986
Creator: Wrulich, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Study of Collective Effects for the PEP Low-Emittance Optics

Description: Experimental studies have been performed on the PEP storage ring run at 7.1 GeV in the low-emittance mode. The motivation for this work is to explore the capability of PEP as a dedicated synchrotron radiation source. The long straight sections and low emittance available at PEP make its use for this purpose very attractive, and would produce a source of very high brightness x-ray beams for the scientific community. During the studies, single-bunch current limitations were measured as a function… more
Date: July 1, 1988
Creator: Zisman, M. S.; Borland, M.; Galayda, J.; Jackson, A.; Kramer, S. & Winick, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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