111 Matching Results

Search Results

Advanced search parameters have been applied.

in creator/contributor: "ANERELLA,M."

open access

Measured and Calculated Losses in a Model Dipole for Gsi's Heavy Ion Synchrotron.

The new heavy ion synchrotron facility proposed by GSI will have two superconducting magnet rings in the same tunnel, with rigidities of 300T{center_dot}m and 10OT{center_dot}m. Fast ramp times are needed. These can cause problems of ac loss and field distortion in the magnets. For the high energy ring, a lm model dipole magnet has been built, based on the RHIC dipole design. This magnet was tested under boiling liquid helium in a vertical dewar. The quench current showed very little dependence… more

Date: June 15, 2003

Creator: Wanderer, P.; Anerella, M.; Ganetis, G.; Ghosh, A. K.; Joshi, P.; Marone, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Superconducting Combined Function Magnet System for J-PARC Neutrino Experiment.

The J-PARC Neutrino Experiment, the construction of which starts in JFY 2004, will use a superconducting magnet system for its primary proton beam line. The system, which bends the 50 GeV 0.75 MW proton beam by about 80 degrees, consists of 28 superconducting combined function magnets. The magnets utilize single layer left/right asymmetric coils that generate a dipole field of 2.6 T and a quadrupole field of 18.6 T/m with the operation current of about 7.35 kA. The system also contains a few co… more

Date: October 3, 2004

Creator: Ogitsu, T.; Ajima, Y.; Anerella, M.; Escallier, J.; Ganetis, G.; Gupta, R. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Radiation Resistant Hts Quadrupoles for Ria.

Extremely high radiation, levels with accumulated doses comparable to those in nuclear reactors than in accelerators, and very high heat loads ({approx}15 kw) make the quadrupole magnets in the fragment separator one of the most challenging elements of the proposed Rare Isotope Accelerator (RIA). Removing large heat loads, protecting the superconducting coils against quenching, the long term survivability of magnet components, and in particular, insulation that can retain its functionality in s… more

Date: October 3, 2004

Creator: Gupta, R.; Anerella, M.; Harrison, M. & Al., Et

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

TEST RESULTS OF HTS COILS AND AN R AND D MAGNET FOR RIA.

This paper presents the successful construction and test results of a magnetic mirror model for the Rare Isotope Accelerator (RIA) that is based on High Temperature Superconductors (HTS). In addition, the performance of thirteen coils (each made with {approx}220 meters of commercially available HTS tape) is also presented. The proposed HTS magnet is a crucial part of the R&D for the Fragment Separator region where the magnets are subjected to several orders of magnitude more radiation and e… more

Date: May 16, 2005

Creator: Gupta, R.; Anerella, M.; Harrison, M.; Schmalzle, J.; Sampson, W. & Zeller, A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Open Midplane Dipole Design for Lhc Ir Upgrade.

The proposed luminosity upgrade of the Large Hadron Collider (LHC), now under construction, will bring a large increase in the number of secondary particles from p-p collisions at the interaction point (IP). Energy deposition will be so large that the lifetime and quench performance of interaction region (IR) magnets may be significantly reduced if conventional designs are used. Moreover, the cryogenic capacity of the LHC will have to be significantly increased as the energy deposition load on … more

Date: January 21, 2004

Creator: Gupta, R.; Anerella, M.; Harrison, M.; Schmalzle, J. & Mokhov, N.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

COMPLETION OF SUPERCONDUCTING MAGNET PRODUCTION AT BNL FOR THE HERA LUMINOSITY UPGRADE

Brookhaven National Laboratory (BNL) has completed production of the superconducting multi-function magnets that are now installed as part of the HERA luminosity upgrade at DESY. The magnets, cryostats, and lead assemblies were designed and built at BNL. To fit inside the existing detectors, the coils plus cryostat structure had to meet a challenging radial budget (e.g., 39 mm horizontally). Two types of magnets were needed and three of each type were built. Each magnet contained normal and ske… more

Date: September 24, 2001

Creator: WANDERER,P. ANERELLA,M. ESCALLIER,J. GHOSH,A. JAIN,A. MARONE,A. MURATORE,J. PARKER,A. PRODELL,A. THOMPSON,P. WU,K. C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

TEST RESULTS FOR LHC INSERTION REGION DEPOLE MAGNETS.

The Superconducting Magnet Division at Brookhaven National Laboratory (BNL) has made 20 insertion region dipoles for the Large Hadron Collider (LHC) at CERN. These 9.45 m-long, 8 cm aperture magnets have the same coil design as the arc dipoles now operating in the Relativistic Heavy Ion Collider (RHIC) at BNL and are of single aperture, twin aperture, and double cold mass configurations. They are required to produce fields up to 4.14 T for operation at 7.56 TeV. Eighteen of these magnets have b… more

Date: May 16, 2005

Creator: Muratore, J.; Jain, A.; Anerella, M.; Cossolino, J. & AL., ET

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

SUPERCONDUCTING HELICAL SNAKE MAGNET FOR THE AGS.

A superconducting helical magnet has been built for polarized proton acceleration in the Brookhaven AGS. This ''partial Snake'' magnet will help to reduce the loss of polarization of the beam due to machine resonances. It is a 3 T magnet some 1940 mm in magnetic length in which the dipole field rotates with a pitch of 0.2053 degrees/mm for 1154 mm in the center and a pitch of 0.3920 degrees/mm for 393 mm in each end. The coil cross-section is made of two slotted cylinders containing superconduc… more

Date: May 16, 2005

Creator: Willen, E.; Anerella, M.; Escallier, G.; Ganetis, G.; Ghosh, A.; Gupta, R. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

OPTIMIZATION OF OPEN MIDPLANE DIPOLE DESIGN FOR LHC IR UPGRADE.

This paper presents the optimized designs of an ''open midplane dipole'' [1] for ''dipole first optics'' [2] for the proposed luminosity upgrade of the Large Hadron Collider (LHC). It was found [3] that in this design at luminosity of 10{sup 35} cm{sup -2} s{sup -1}, the peak power density in the coils can be up to two orders of magnitude higher than that at the present baseline luminosity (10{sup 34} cm{sup -2} s{sup -1}). This comes from a large quantity of spray particles from Interaction Po… more

Date: May 16, 2005

Creator: Gupta, R.; Anerella, M.; Ghosh, A.; Harrison, M.; Schmalzle, J.; Wanderer, P. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

COMPACT SUPERCONDUCTING FINAL FOCUS MAGNET OPTIONS FOR THE ILC.

The QD0 quadrupole, the final focus magnet closest to the Interaction Point (IP) for the ILC 20 m crossing angle layout, must provide strong focusing yet be adjustable to accommodate collision energy changes for energy scans and low energy calibration running. It must also be compact to allow disrupted beam and Beamstrahlung coming from the IP to pass outside into an independent instrumented beam line that leads to a high-power beam absorber. In designing QD0 we take advantage of recent BNZ, ex… more

Date: May 16, 2005

Creator: Parker, B.; Anerella, M.; Escallier, J.; Harrison, M.; He, P.; Jain, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Status of High Temperature Superconductor Magnet R and D at Bnl.

We report the status and test results of the High Temperature Superconductor (HTS) cable and magnet R&D at Brookhaven National Laboratory (BNL). If successful, this will enhance the performance and reduce the cost of operation of magnets that must absorb a large amount of energy. The need for developing this technology has been seen in a number of high field magnet applications for high energy colliders, and a medium field application in the proposed Rare Isotope Accelerator (RIA). The like… more

Date: January 22, 2004

Creator: Gupta, R.; Anerella, M.; Cozzolino, J.; Escallier, J.; Ganetis, G.; Ghosh, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

ENGINEERING OF THE AGS SNAKE COIL ASSEMBLY.

A 30% Snake superconducting magnet is proposed to maintain polarization in the AGS proton beam, the magnetic design of which is described elsewhere. The required helical coils for this magnet push the limits of the technology developed for the RHIC Snake coils. First, fields must be provided with differing pitch along the length of the magnet. To accomplish this, a new 3-D CAD system (''Pro/Engineer'' from PTC), which uses parametric techniques to enable fast iterations, has been employed. Revi… more

Date: May 12, 2003

Creator: ANERELLA,M. GUPTA,R. KOVACH,P. MARONE,A. PLATE,S. POWER,K. SCHMALZLE,J. WILLEN,E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Improved cable insulation for superconducting magnets

Several years ago, Brookhaven joined with DuPont in a cooperative effort to develop improved cable insulation for SSC superconducting dipole magnets. The effort was supported by the SSC Central Design Group and later the SSC Laboratory. It was undertaken because turn-to-turn and midplane shorts were routinely being experienced during the assembly of magnets with coils made of the existing Kapton/Fiberglass (K/FG) system of Kapton film overwrapped with epoxy-impregnated fiberglass tape. Dissecti… more

Date: September 1, 1993

Creator: Anerella, M.; Ghosh, A. K.; Kelly, E.; Schmalzle, J.; Willen, E.; Fraivillig, J. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Large aperture quadrupoles for RHIC interaction regions

The ultimate luminosity performance of the Relativistic Heavy Ion Collider (RHIC) depends on the field quality in the large aperture (130 mm) superconducting quadrupoles in the interaction regions. In this paper we discuss the design features that are incorporated to obtain a good field quality. Coil midplane gap and pole shims may be adjusted to remove certain field harmonics due to systematic errors in construction. Iron tuning shims will be inserted at eight strategic locations in the assemb… more

Date: September 1, 1993

Creator: Gupta, R.; Anerella, M. & Ganetis, G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Quench propagation study for the BNL-built, full-length, 50mm aperture SSC model dipoles

As part of the program to build and test SSC 50mm aperture prototype dipole magnets, a series of seven full-length dipoles were built and tested at BNL. Important part of the testing program was the study of quench propagation velocity and hot spot temperature over a range of experimental conditions in order to characterize the safety of the conductor during quenches experienced under different circumstances. Such studies are important tools in design, implementation, and verification of quench… more

Date: September 1, 1993

Creator: Muratore, J.; Anerella, M. & Cottingham, G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

``B`` series RHIC arc quadrupoles

A series of pre-production superconducting quadrupoles has been constructed at Brookhaven National Laboratory. These magnets have an operating gradient of 71 Telsa/meter with a coil bore of 80 mm. The eight magnets are exact prototypes of the quadrupoles which will be used in the arcs. These magnets were tested and measured and met the accelerator specifications.

Date: September 1, 1993

Creator: Thompson, P.; Anerella, M. & Ganetis, G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Cold mass mechanical design, quench and mechanical test results for full length 50 mm aperture SSC model dipoles built at BNL

A series of seven 50 mm aperture, 15-meter long dipole magnets was built and assembled at Brookhaven National Laboratory (BNL). Their design embodies features for evaluation for the final selection of the design for the SSC Collider dipole magnets. This paper discusses mechanical design of the cold mass and presents test results such as quench histories and mechanical parameters during construction and testing.

Date: July 1, 1992

Creator: Goodzeit, C.; Radusewicz, P.; Anerella, M.; Cottingham, J.; Ganetis, G.; Garber, M. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Partial lifetime test of an SSC Collider dipole

Over a period of ten months, a 15 m-long, 50 mm-aperture superconducting SSC Collider dipole was taken through a series of thermal and power cycles to check for changes in performance. One quench below operating current was experienced during this period. Small changes in the coil preload and certain harmonics were observed.

Date: December 31, 1993

Creator: Wanderer, P.; Anerella, M. & Ganetis, G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Test of eight superconducting arc quadrupoles for RHIC

Test results from a group of eight superconducting quadrupoles at Brookhaven National Laboratory are presented. The magnets have been designed for use in the arc regions of the Relativistic Heavy Ion Collider now under construction at Brookhaven. Novel features of the design include a single-layer coil, the use of injection-molded phenolic for the pole spacers, and a yoke that also serves as a collar. This R&D series has been used to verify the magnet quench performance and field quality prior … more

Date: December 31, 1993

Creator: Wanderer, P.; Anerella, M. & Ganetis, G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Construction details and test results from RHIC sextupoles

Four 8 cm aperture sextupoles have been built at BNL to verify the magnetic performance of this magnet in the RHIC installation. Two significantly different mechanical configurations have been designed, and two magnets of each design have been built, and successfully tested, and have exceeded the required minimum quench current by a substantial margin. This report describes the assembly details of the second configuration, which is the final production configuration. In addition the first indus… more

Date: December 31, 1993

Creator: Lindner, M.; Anerella, M. & Ganetis, G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Quench propagation study for full-length RHIC dipole magnets

No Description Available.

Date: December 31, 1993

Creator: Muratore, J.; Anerella, M. & Ganetis, G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Results from a partial lifetime test of a 40 mm-aperture 17 mm SSC model dipole

A 40-mm-aperture, 17-m-long Superconducting Super Collider (SSC) model dipole was assembled at Brookhaven National Laboratory (BNL) and tested initially at Fermi National Accelerator Lab (FNAL) and later at BNL. At BNL an extended cycle test was devised to examine the magnet`s performance through numerous cold tests and thermal cycles. This paper discusses the magnet`s mechanical and quench performance and magnet field measurements during the tests.

Date: March 1, 1992

Creator: Radusewicz, P.; Devred, A.; Bush, T.; Coombes, R.; DiMarco, J.; Goodzeit, C. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Construction and test results from 15 m-long, 50 mm aperture SSC Collider Dipole models

Construction details, assembly data, coil stress and end force measurements are reported with quench data for the initial full-length SSC model dipoles with 50 mm aperture being built at BNL.

Date: December 31, 1992

Creator: Anerella, M.; Cottingham, J.; Ganetis, G.; Garber, M.; Ghosh, A.; Greene, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Magnetic design and field quality measurements for full length 50 mm aperture SSC model dipoles built at BNL

Field quality measurements of five 15 m-long, 50-mm aperture SSC R & D collider dipoles made at BNL are reported. Data include the multipole coefficients and dipole angle over the full operating range of the SSC. The variation of quench current with ramp rate is also presented.

Date: December 31, 1992

Creator: Wanderer, P.; Anerella, M.; Cottingham, J.; Ganetis, G.; Garber, M.; Ghosh, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department