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Prospects for Acceleration of Deuterons and Helions.

Description: In order to study the spin structure of the neutron at high energy, a beam rich in polarized neutrons needs to be developed. The neutron has no charge and cannot be accelerated, so either deuterons or helions must be considered. When it comes to spin manipulation and stability of the polarization in a circular accelerator, it is the anomalous part of the magnetic moment which is important. If the anomaly is too small, then manipulation becomes difficult as in the case of deuterons--spin rotator… more
Date: September 10, 2007
Creator: MacKay, W. W.
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Partner: UNT Libraries Government Documents Department
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The Little Randall-Sundrum Model at the LHC

Description: We present a predictive warped model of flavor, cut off at an ultraviolet scale {Omicron}(10{sup 3}) TeV, called the 'Little Randall-Sundrum (LRS)' model. This model corresponds to a volume-truncation, by a factor y {approx} 6, of the RS scenario and is holographically dual to dynamics with number of colors larger by y. With separate gauge and flavor dynamics, several unwanted contributions to precision electroweak, Zb{bar b}, and flavor observables are suppressed in the LRS framework, compared… more
Date: July 29, 2008
Creator: Davoudiasl, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Status of DPIS development in BNL

Description: Direct injection scheme was proposed in 2000 at RIKEN in Japan. The first beam test was done at Tokyo Institute of Technology using a CO{sub 2} laser and an 80 MHz 4 vane RFQ in 2001, and further development continued in RIKEN. In 2006, all the experimental equipment were moved to BNL and a new development program was started. We report on our recent activities at BNL including the use of a frozen gas target for the laser source, low charge state ion beam production and a newly developed laser … more
Date: September 29, 2008
Creator: Okamura,M.; Tamura, J. & Kanesue, T.
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Partner: UNT Libraries Government Documents Department
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Comparative Study of Vibration Stability at Operating Light Source Facilities and Lessons Learned in Achieving NSLS II Stability Goals

Description: In an effort to ensure that the stability goals of the NSLS II will be met once the accelerator structure is set on the selected BNL site a comprehensive evaluation of the ground vibration observed at existing light source facilities has been undertaken. The study has relied on measurement data collected and reported by the operating facilities as well as on new data collected in the course of this study. The primary goal of this comprehensive effort is to compare the green-field conditions tha… more
Date: June 23, 2008
Creator: Simos,N.; Fallier, M. & Amick, H.
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Partner: UNT Libraries Government Documents Department
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Summary of the Mini BNL/LARP/CARE-HHH Workshop on Crab Cavities for the LHC (LHC-CC08)

Description: The first mini-workshop on crab compensation for the LHC luminosity upgrade (LHC-CC08) was held February 24-25, 2008 at the Brookhaven National Laboratory. A total of 35 participants from 3 continents and 15 institutions from around the world participated to discuss the exciting prospect of a crab scheme for the LHC. If realized it will be the first demonstration in hadron colliders. The workshop is organized by joint collaboration of BNL, US-LARP and CARE-HHH. The enormous interest in the subj… more
Date: May 1, 2008
Creator: Ben-Zvi, Ilan; Calaga, R. & Zimmermann, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Injection and Acceleration of Au31+ in the BNL AGS.

Description: Injection and acceleration of ions in a lower charge state reduces space charge effects, and, if further elcctron stripping is needed, may allow elimination of a stripping stage and the associated beam losses. The former is of interest to the accelerators in the GSI FAIR complex, the latter for BNL RHIC collider operation at energies lower than the current injection energy. Lower charge state ions, however, have a higher likelihood of electron stripping which can lead to dynamic pressures rises… more
Date: June 23, 2008
Creator: Fischer, W.; Ahrens, L.; Brown, K.; Gardner, C.; Glenn, W.; Huang, H. et al.
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Partner: UNT Libraries Government Documents Department
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Assembly and Test of SQ01b, a Nb3Sn Quadrupole Magnet for the LHC Accelerator Research Program

Description: The US LHC Accelerator Research Program (LARP) consists of four US laboratories (BNL, FNAL, LBNL, and SLAC) collaborating with CERN to achieve a successful commissioning of the LHC and to develop the next generation of Interaction Region magnets. In 2004, a large aperture Nb{sub 3}Sn racetrack quadrupole magnet (SQ01) has been fabricated and tested at LBNL. The magnet utilized four subscale racetrack coils and was instrumented with strain gauges on the support structure and directly over the co… more
Date: June 1, 2006
Creator: Ferracin, P.; Ambrosio, G.; Bartlett, S. E.; Bordini, B.; Carcagno, R. H.; Caspi, S. et al.
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Partner: UNT Libraries Government Documents Department
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Superconducting Storage Cavity for RHIC

Description: This document provides a top-level description of a superconducting cavity designed to store hadron beams in the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. It refers to more detailed documents covering the various issues in designing, constructing and operating this cavity. The superconducting storage cavity is designed to operate at a harmonic of the bunch frequency of RHIC at a relatively low frequency of 56 MHz. The current storage cavities of RHIC operate at 1… more
Date: January 2, 2009
Creator: Ben-Zvi, Ilan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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R and D energy recovery LINAC at Brookhaven National Laboratory

Description: Collider Accelerator Department at BNL is in the final stages of developing the 20-MeV R and D energy recovery linac with super-conducting 2.5 MeV RF gun and single-mode super-conducting 5-cell RF linac. This unique facility aims to address many outstanding questions relevant for high current (up to 0.5 A of average current), high brightness energy-recovery linacs with novel ZigZag-type merger. Recent development in the R and D ERL plans include gun and 5-cell cavity (G5) test and possibility o… more
Date: June 23, 2008
Creator: Litvinenko,V. N.; Beavis, D.; Ben-Zvi, Ilan; Blaskiewicz, M.; Burrill, A.; Calaga, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Measuring the proton beam polarization from the source to RHIC.

Description: Polarimeters are necessary tools for measuring the beam polarization during the acceleration process as well as a yardstick for performing spin physics experiments. In what follows, I will describe the principles of measuring the proton beam polarization and the techniques that are employed at various energies. I will present a tour of the polarimetry employed at the BNL Relativistic Heavy Ion collider (RHIC) polarized proton complex as it spans the full spectrum from the source to collider ene… more
Date: September 10, 2007
Creator: Makdisi,Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Design and Fabrication of the RHIC Electron-Cooling Experiment High Beta Cavity and Cryomodule

Description: The summary of this report is: (1) A high-current SRF cavity for an Energy Recovery Linac (ERL) has been designed by BNL and AES and fabricated by AES; (2) The cavity was cleaned and tested by JLAB with BNL personnel support; (3) Cavity performance exceeded goal of 20 MV/m at Q{sub 0} > 1 x 10{sup 10} and far exceeded requirement of 15 MV/m at Q{sub 0} > 1 x 10{sup 10}; (4) Hermetic String assembled at JLAB with BNL personnel support and shipped to BNL; and (5) BNL has recently completed … more
Date: November 17, 2008
Creator: Holmes, D.; Calderaro, M.; Cole, M.; Falletta, M.; Peterson, E.; Rathke, J. et al.
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Partner: UNT Libraries Government Documents Department
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New Results on Exclusive Production From Nuclei

Description: Three new experiments concerning coherent production from nuclei are discussed. Evidence is presented from the Carnegie Mellon-Illinois-Northwestern-Rochester collaboration regarding coherent production of A{sub 2} mesons in collisions of 23 GeV/c {pi}{sup -} with nuclear targets (C, Al, Cu, Ag). The coherent A{sub 2} cross section which vanishes in the forward direction is typically {approx} 2% that of the A{sub 1}. A neutron dissociation experiment conducted at BNL (Rochester-BNL collaboratio… more
Date: January 1, 1974
Creator: Ferbel, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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EBIS preinjector construction status

Description: A new heavy ion preinjector is presently under construction at Brookhaven National Laboratory. This preinjector uses an Electron Beam Ion Source (EBIS), and an WQ and IH Linac, both operating at 100.625 MHz, to produce 2 MeV/u ions of any species for use, after further acceleration, at the Relativistic Heavy Ion Collider, and the NASA Space Radiation Laboratory. Among the increased capabilities provided by this preinjector are the ability to produce ions of any species, and the ability to switc… more
Date: September 29, 2008
Creator: Alessi,J.; Barton, D.; Beebe, E.; Bellavia, S.; Gould, O.; Kponou, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Realization of a Custom Designed FPGA Based Embedded Controller

Description: As part of the Low Level RF (LLRF) upgrade project at Brookhaven National Laboratory's Collider-Accelerator Department (BNL C-AD), we have recently developed and tested a prototype high performance embedded controller. This controller is a custom designed PMC module employing a Xilinx V4FX60 FPGA with a PowerPC405 embedded processor, and a wide variety of on board peripherals (DDR2 SDRAM, FLASH, Ethernet, PCI, multi-gigabit serial transceivers, etc.). The controller is capable of running either… more
Date: October 15, 2007
Creator: Severino, F.; Harvey, M.; Hayes, T.; Hoff, L.; Oddo, P. & Smith, K. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Polarized Proton Acceleration in AGS and RHIC

Description: As the first hadron accelerator and collider consisting of two independent superconducting rings RHIC has operated with a wide range of beam energies and particle species including polarized proton beams. The acceleration of polarized beams in both the injector and the collider rings is complicated by numerous depolarizing spin resonances. Partial and full Siberian snakes have made it possible to overcome the depolarization and beam polarizations of up to 65% have been reached at 100 GeV in RHI… more
Date: September 10, 2007
Creator: Roser, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Measurement of the K+ --> pi+ nu nu branching ratio

Description: Experiment E949 at Brookhaven National Laboratory studied the rare decay K{sup +}-->pi{sup +} nu{ovr {nu}} and other processes with an exposure of 1.77 x 10{sup 12} k{sup +}'s. The data were analyzed using a blind analysis technique yielding one candidate event with an estimated background of 0.30 {+-} 0.03 events. Combining this result with the observation of two candidate events by the predecessor experiment E787 gave the branching ratio B(K{sup +}-->pi{sup +} nu{ovr {nu}}) = (1.47{sub … more
Date: March 1, 2008
Creator: Adler, S.; Anisimovsky, V. V.; Aoki, M.; Ardebili, M.; Artamonov, A. V.; Atiya, M. et al.
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Partner: UNT Libraries Government Documents Department
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Characterization of Prototype LSST CCDs

Description: The ambitious science goals of the Large Synoptic Survey Telescope (LSST) will be achieved in part by a wide-field imager that will achieve a new level of performance in terms of area, speed, and sensitivity. The instrument performance is dominated by the focal plane sensors, which are now in development. These new-generation sensors will make use of advanced semiconductor technology and will be complemented by a highly integrated electronics package located inside the cryostat. A test laborato… more
Date: June 23, 2008
Creator: O'Connor, P.; Frank, J.; Geary, J. C.; Gilmore, D. K.; Kotov, I.; Radeka, V. et al.
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Partner: UNT Libraries Government Documents Department
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The first forty years, 1947-1987

Description: This report commemorates the fortieth anniversary of Brookhaven National Laboratory by representing a historical overview of research at the facility. The chapters of the report are entitled: The First Forty Years, Brookhaven: A National Resource, Fulfilling a Mission - Brookhaven's Mighty Machines, Marketing the Milestones in Basic Research, Meeting National Needs, Making a Difference in Everyday Life, and Looking Forward.
Date: January 1, 1987
Creator: Rowe, M.S. (ed.); Cohen, A. & Petersen, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Relay studies: Existing data, current testing and cabinet amplification

Description: The seismic fragility of most electrical equipment is governed by the malfunction of relays. This paper discusses the combined study being performed at BNL by evaluating existing fragility test data, conducting a new relay test program and estimating the cabinet amplification at relay locations. Existing test data for relays have been collected and evaluated at BNL. The data base consists of results from a wide variety of test programs - single frequency, single axis, multifrequency, multiaxis … more
Date: January 1, 1988
Creator: Bandyopadhyay, K.; Hofmayer, C.; Kassir, M. & Pepper, S.
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Partner: UNT Libraries Government Documents Department
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Tapping the earth's geothermal resources: Hydrothermal today, magma tomorrow

Description: The paper discusses geothermal resources, what it is, where it is, and how to extract energy from it. The materials research activities at Brookhaven National Laboratory related to geothermal energy extraction are discussed. These include high-temperature, light-weight polymer cements, elastomers, biochemical waste processing techniques, and non-metallic heat exchanger tubing. The economics of geothermal energy is also discussed. (ACR)
Date: December 17, 1986
Creator: Kukacka, L. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Annual highlights of the energy technology programs

Description: The Energy Storage and Conversion Division reports summary activities in the following: electrolysis-based hydrogen energy storage systems; an electrochemically regenerative hydrogen--halogen energy storage system; fuel cells (materials and electrolysis); high temperature water electrolysis; hydrogen energy storage systems for automobile propulsion; program planning for research related to energy conservation; New York Energy Office oil retrofit pilot program; burner-boiler/furnace testing; and… more
Date: December 1, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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