253 results on '"Arbelaez, D."'
Search Results
2. Status of the High Field Cable Test Facility at Fermilab
- Author
-
Velev, G. V., Arbelaez, D., Arcola, C., Bruce, R., Kashikhin, V., Koshelev, S., Makulski, A., Marinozzi, V., Nikolic, V., Orris, D., Prestemon, S., Sabbi, G., Tope, T., and Yuan, X.
- Subjects
Physics - Accelerator Physics - Abstract
Fermi National Accelerator Laboratory (FNAL) and Lawrence Berkeley National Laboratory (LBNL) are building a new High Field Vertical Magnet Test Facility (HFVMTF) for testing superconducting cables in high magnetic field. The background magnetic field of 15 T in the HFVMTF will be produced by a magnet provided by LBNL. The HFVMTF is jointly funded by the US DOE Offices of Science, High Energy Physics (HEP), and Fusion Energy Sciences (FES), and will serve as a superconducting cable test facility in high magnetic fields and a wide range of temperatures for HEP and FES communities. This facility will also be used to test high-field superconducting magnet models and demonstrators, including hybrid magnets, produced by the US Magnet Development Program (MDP). The paper describes the status of the facility, including construction, cryostat designs, top and lambda plates, and systems for powering, and quench protection and monitoring.
- Published
- 2023
- Full Text
- View/download PDF
3. Conceptual design of 20 T hybrid accelerator dipole magnets
- Author
-
Ferracin, P., Ambrosio, G., Anerella, M., Arbelaez, D., Brouwer, L., Barzi, E., Cooley, L., Cozzolino, J., Fajardo, L. Garcia, Gupta, R., Juchno, M., Kashikhin, V. V., Kurian, F., Marinozzi, V., Novitski, I., Rochepault, E., Stern, J., Vallone, G., Yahia, B., and Zlobin, A. V.
- Subjects
Physics - Accelerator Physics - Abstract
Hybrid magnets are currently under consideration as an economically viable option towards 20 T dipole magnets for next generation of particle accelerators. In these magnets, High Temperature Superconducting (HTS) materials are used in the high field part of the coil with so-called insert coils, and Low Temperature Superconductors (LTS) like Nb3Sn and Nb-Ti superconductors are used in the lower field region with so-called outsert coils. The attractiveness of the hybrid option lays on the fact that, on the one hand, the 20 T field level is beyond the Nb3Sn practical limits of 15-16 T for accelerator magnets and can be achieved only via HTS materials; on the other hand, the high cost of HTS superconductors compared to LTS superconductors makes it advantageous exploring a hybrid approach, where the HTS portion of the coil is minimized. We present in this paper an overview of different design options aimed at generating 20 T field in a 50 mm clear aperture. The coil layouts investigated include the Cos-theta design (CT), with its variations to reduce the conductor peak stress, namely the Canted Cos-theta design (CCT) and the Stress Management Cos-theta design (SMCT), and, in addition, the Block-type design (BL) including a form of stress management and the Common-Coil design (CC). Results from a magnetic and mechanical analysis are discussed, with particular focus on the comparison between the different options regarding quantity of superconducting material, field quality, conductor peak stress, and quench protection.
- Published
- 2023
- Full Text
- View/download PDF
4. Computation of the Strain Induced Critical Current Reduction in the 16 T Nb3Sn Test Facility Dipole
- Author
-
Vallone, G, Anderssen, E, Arbelaez, D, Cheggour, N, Ferracin, P, Sabbi, GL, and Turrioni, D
- Subjects
Engineering ,Electrical Engineering ,Physical Sciences ,Nb3Sn ,test facility ,critical current ,dipole ,strain sensitivity ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics ,Electrical engineering ,Condensed matter physics - Abstract
A test facility dipole is being developed at LBNL, targeting a 16 T field in a 144 mm wide aperture. The magnet uses a block design, with two double-pancake coils. In order to minimize motion under the large Lorentz forces, the coils are preloaded against a thick aluminum shell and iron yoke using bladder and key technology. It is then crucial to verify that the performance of the magnet is not degraded due to strain induced on the Nb3Sn conductor during assembly, cool-down and powering. The critical current of extracted strands was measured in a varying background magnetic field and as a function of the applied longitudinal strain. Finite element analysis was used to extract the strain state inside the superconducting strands during magnet assembly and operation. This strain was then compared to the measurements to evaluate potential reversible and irreversible effects on the magnet performances. The results suggest that the magnet can reach 16 T with sufficient margin, with no irreversible degradation in the high field region.
- Published
- 2023
5. Status of the High Field Cable Test Facility at Fermilab
- Author
-
Velev, GV, Arbelaez, D, Arcola, C, Bruce, R, Kashikhin, V, Koshelev, S, Makulski, A, Marinozzi, V, Nikolic, V, Orris, D, Prestemon, S, Sabbi, G, Tope, T, and Yuan, X
- Subjects
Nuclear and Plasma Physics ,Physical Sciences ,Affordable and Clean Energy ,Superconducting magnets ,Helium ,Heating systems ,Valves ,Test facilities ,Magnetic shielding ,Magnetic noise ,High-temperature superconductors ,super- conducting magnets ,superconducting materials ,test facilities ,superconducting magnets ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics ,Electrical engineering ,Condensed matter physics - Abstract
Fermi National Accelerator Laboratory (FNAL) and Lawrence Berkeley National Laboratory (LBNL) are building a new High Field Vertical Magnet Test Facility (HFVMTF) for testing superconducting cables in high magnetic field. The background magnetic field of 15 T in the HFVMTF will be produced by a magnet provided by LBNL. The HFVMTF is jointly funded by the US DOE Offices of Science, High Energy Physics (HEP), and Fusion Energy Sciences (FES), and will serve as a superconducting cable test facility in high magnetic fields and a wide range of temperatures for HEP and FES communities. This facility will also be used to test high-field superconducting magnet models and demonstrators, including hybrid magnets, produced by the US Magnet Development Program (MDP). The paper describes the status of the facility, including construction, cryostat designs, top and lambda plates, and systems for powering, and quench protection and monitoring.
- Published
- 2023
6. An Initial Look at the Magnetic Design of a 150 mm Aperture High-Temperature Superconducting Magnet With a Dipole Field of 8 to 10 T
- Author
-
Wang, X, Arbelaez, D, Brouwer, L, Caspi, S, Ferracin, P, Fajardo, L Garcia, Gourlay, S, Higley, H, Juchno, M, Marchevsky, M, Pong, I, Prestemon, S, Fernandez, JL Rudeiros, Sabbi, G, Shen, T, Teyber, R, Vallone, G, van der Laan, D, and Weiss, J
- Subjects
Nuclear and Plasma Physics ,Physical Sciences ,Arc magnet ,muon collider ,REBCO ,high-temperature superconducting magnet ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics ,Electrical engineering ,Condensed matter physics - Abstract
High-temperature superconducting REBa{2} Cu{3}O{7-x} (rebco) conductors have the potential to generate a high magnetic field over a broad temperature range. The corresponding accelerator magnet technology, still in its infancy, can be attractive for future energy-frontier particle colliders such as a multi-TeV muon collider. To help develop the technology, we explore the requirements and potential characteristics of a rebco magnet, operating at 4.2 or 20 K, with a dipole field of 8-10 T in a clear aperture of 150 mm. We use the canted \cos \theta magnet configuration to reduce the electromagnetic stresses on the conductors. We present the resulting dipole fields, field gradients for combined-function cases, conductor stresses, magnet dimensions and conductor lengths. We also discuss the conductor performance that is required to achieve the target dipole field at 4.2 and 20 K. The information can provide useful input to the development of rebco magnet and conductor technology for collider-ring magnets in a muon collider.
- Published
- 2023
7. Towards 20 T Hybrid Accelerator Dipole Magnets
- Author
-
Ferracin, P., Ambrosio, G., Arbelaez, D., Brouwer, L., Barzi, E., Cooley, L., Fajardo, L. Garcia, Gupta, R., Juchno, M., Kashikhin, V., Marinozzi, V., Novitski, I., Rochepault, E., Stern, J., Zlobin, A., and Zucchi, N.
- Subjects
Physics - Accelerator Physics - Abstract
The most effective way to achieve very high collision energies in a circular particle accelerator is to maximize the field strength of the main bending dipoles. In dipole magnets using Nb-Ti superconductor the practical field limit is considered to be 8-9 T. When Nb3Sn superconductor material is utilized, a field level of 15-16 T can be achieved. To further push the magnetic field beyond the Nb3Sn limits, High Temperature Superconductors (HTS) need to be considered in the magnet design. The most promising HTS materials for particle accelerator magnets are Bi2212 and REBCO. However, their outstanding performance comes with a significantly higher cost. Therefore, an economically viable option towards 20 T dipole magnets could consist in an hybrid solution, where both HTS and Nb3Sn materials are used. We discuss in this paper preliminary conceptual designs of various 20 T hybrid magnet concepts. After the definition of the overall design criteria, the coil dimensions and parameters are investigated with finite element models based on simple sector coils. Preliminary 2D cross-section computation results are then presented and three main layouts compared: cos-theta, block, and common-coil. Both traditional designs and more advanced stress-management options are considered., Comment: arXiv admin note: substantial text overlap with arXiv:2203.13985
- Published
- 2022
- Full Text
- View/download PDF
8. A Strategic Approach to Advance Magnet Technology for Next Generation Colliders
- Author
-
Ambrosio, G., Amm, K., Anerella, M., Apollinari, G., Arbelaez, D., Auchmann, B., Balachandran, S., Baldini, M., Ballarino, A., Barua, S., Barzi, E., Baskys, A., Bird, C., Boerme, J., Bosque, E., Brouwer, L., Caspi, S., Cheggour, N., Chlachidze, G., Cooley, L., Davis, D., Dietderich, D., DiMarco, J., English, L., Fajardo, L. Garcia, Fernandez, J. L. Rudeiros, Ferracin, P., Gourlay, S., Gupta, R., Hafalia, A., Hellstrom, E., Higley, H., Hossain, I., Jewell, M., Jiang, J., Juchno, GM., Kametani, F., Kashikhin, V., Krave, S., Kumar, M., Kurian, F., Lankford, A., Larbalestier, D., Lee, P., Lee, G. S., Lombardo, V., Marchevsky, M., Marinozzi, V., Messe, C., Minervini, J., Myers, C., Naus, M., Novitski, I., Ogitsu, T., Palmer, M., Pong, I., Prestemon, S., Runyan, C., Sabbi, G. L., Shen, T., Stoynev, S., Strauss, T., Tarantini, C., Teyber, R., Trociewitz, U., Turqueti, M., Turenne, M., Turrioni, D., Vallone, G., Velev, G., Viarengo, S., Wang, L., Wang, X., Xu, X., Yamamoto, A., Yin, S., and Zlobin, A.
- Subjects
Physics - Accelerator Physics - Abstract
Colliders are built on a foundation of superconducting magnet technology that provides strong dipole magnets to maintain the beam orbit and strong focusing magnets to enable the extraordinary luminosity required to probe physics at the energy frontier. The dipole magnet strength plays a critical role in dictating the energy reach of a collider, and the superconducting magnets are arguably the dominant cost driver for future collider facilities. As the community considers opportunities to explore new energy frontiers, the importance of advanced magnet technology - both in terms of magnet performance and in the magnet technology's potential for cost reduction - is evident, as the technology status is essential for informed decisions on targets for physics reach and facility feasibility., Comment: contribution to Snowmass 2021
- Published
- 2022
9. Towards 20 T Hybrid Accelerator Dipole Magnets
- Author
-
Ferracin, P, Ambrosio, G, Arbelaez, D, Brouwer, L, Barzi, E, Cooley, L, Fajardo, L Garcia, Gupta, R, Juchno, M, Kashikhin, V, Marinozzi, V, Novitski, I, Rochepault, E, Stern, J, Zlobin, A, and Zucchi, N
- Subjects
Engineering ,Electrical Engineering ,Physical Sciences ,Dipole magnets ,hybrid magnets ,HTS ,Nb3Sn magnets ,superconducting ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics ,Electrical engineering ,Condensed matter physics - Abstract
The most effective way to achieve very high collision energies in a circular particle accelerator is to maximize the field strength of the main bending dipoles. In dipole magnets using Nb-Ti superconductor the practical field limit is considered to be 8-9 T. When Nb3Sn superconductor material is utilized, a field level of 15-16 T can be achieved. To further push the magnetic field beyond the Nb3Sn limits, High Temperature Superconductors (HTS) need to be considered in the magnet design. The most promising HTS materials for particle accelerator magnets are Bi2212 and REBCO. However, their outstanding performance comes with a significantly higher cost. Therefore, an economically viable option towards 20 T dipole magnets could consist in an 'hybrid' solution, where both HTS and Nb3Sn materials are used. We discuss in this paper preliminary conceptual designs of various 20 T hybrid magnet concepts. After the definition of the overall design criteria, the coil dimensions and parameters are investigated with finite element models based on simple sector coils. Preliminary 2D cross-section computation results are then presented and three main layouts compared: cos-theta, block, and common-coil. Both traditional designs and more advanced stress-management options are considered.
- Published
- 2022
10. Modeling Training in Nb3Sn Superconducting Magnets
- Author
-
Vallone, G., primary, Anderssen, E., additional, Arbelaez, D., additional, Brouwer, L., additional, Ferracin, P., additional, Fernandez, JL Rudeiros, additional, Shen, T., additional, and Teyber, R., additional
- Published
- 2024
- Full Text
- View/download PDF
11. Development and performance of a 2.9 Tesla dipole magnet using high-temperature superconducting CORC®wires
- Author
-
Wang, X, Abraimov, D, Arbelaez, D, Bogdanof, TJ, Brouwer, L, Caspi, S, DIetderich, DR, DImarco, J, Francis, A, Garcia Fajardo, L, Ghiorso, WB, Gourlay, SA, Higley, HC, Marchevsky, M, Maruszewski, MA, Myers, CS, Prestemon, SO, Shen, T, Taylor, J, Teyber, R, Turqueti, M, Van Der Laan, D, and Weiss, JD
- Subjects
REBCO ,dipole accelerator magnet ,CORC® ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics - Abstract
Although the high-temperature superconducting (HTS) REBa2Cu3O x (REBCO, RE-rare earth elements) material has a strong potential to enable dipole magnetic fields above 20 T in future circular particle colliders, the magnet and conductor technology needs to be developed. As part of an ongoing development to address this need, here we report on our CORC® canted cosθ magnet called C2 with a target dipole field of 3 T in a 65 mm aperture. The magnet was wound with 70 m of 3.8 mm diameter CORC® wire on machined metal mandrels. The wire had 30 commercial REBCO tapes from SuperPower Inc. each 2 mm wide with a 30 µm thick substrate. The magnet generated a peak dipole field of 2.91 T at 6.290 kA, 4.2 K. The magnet could be consistently driven into the flux-flow regime with reproducible voltage rise at an engineering current density between 400-550 A mm-2, allowing reliable quench detection and magnet protection. The C2 magnet represents another successful step towards the development of high-field accelerator magnet and CORC® conductor technologies. The test results highlighted two development needs: continue improving the performance and flexibility of CORC® wires and develop the capability to identify locations of first onset of flux-flow voltage.
- Published
- 2021
12. Effect of pre-oxidation treatments on the structural, microstructural, and chemical properties of (Ni,Pt)Al systems
- Author
-
Garcia-Herrera, J. E., Espinosa-Arbelaez, D. G., Caceres-Diaz, L. A., Mondragon-Rodriguez, G. C., Ruiz-Luna, H., Gonzalez-Hernandez, J., Munoz-Saldana, J., and Alvarado-Orozco, J. M.
- Subjects
Condensed Matter - Materials Science - Abstract
The effect of isothermal pre-oxidation treatments on the \b{eta}-(Ni,Pt)Al + Ren\'e N5 system degradation is here reported. The oxidation treatments were carried out from 900 (mostly {\theta}-Al2O3 growing conditions) to 1200{\deg}C (mainly {\alpha}-Al2O3 growing conditions) for 5 h, under a purified Ar-stream with a fixed pO2= 1 x 10-5 atm. Results are discussed based on the correlation between the structural, microstructural and chemical properties of the \b{eta}-(Ni,Pt)Al BC showing that pre-oxidation parameters have an important effect on the multi-elemental counter diffusion phenomena along BC. For instance, a significant BC+IDZ thickness increase of 55% at 1200 {\deg}C was observed with respect to as-received sample just after 5 h of oxidation resulting in a severe BC degradation., Comment: 18 pages, 7 Figures
- Published
- 2018
13. Effect of Graded Bias Voltage on the Microstructure of arc-PVD CrN Films and its Response in Electrochemical & Mechanical Behavior
- Author
-
Cedeño-Venté, M. L., Espinosa-Arbeláez, D. G., Manríquez-Rocha, J., Mondragón-Rodríguez, G. C., Gómez-Ovalle, A. E., González-Hernández, J., and Alvarado-Orozco, J. M.
- Subjects
Physics - Applied Physics ,Condensed Matter - Materials Science - Abstract
The effect of graded or constant bias voltages (-40 V, -80 V and -40/60/80 V) on size grain and surface defects of arc PVD deposited CrN films was investigated. Corrosion resistance evaluated using electrochemical impedance spectroscopy (EIS) and potentiodynamic curves (Tafel) and the mechanical behavior evaluated by means of instrumented nanoindentation and scratch testing was correlated with the microstructural changes. It was found that the bias voltage variation affects corrosion behavior due to the presence of defects (i.e. open voids, droplets) which also affects the failure mechanisms and increasing spallation. High bias voltage (-80 V) increases nano-hardness and the elastic modulus due to the dense microstructure of the CrN coating.
- Published
- 2018
14. Theoretical-Experimental failure analysis of the c-Al0.66Ti0.33N-M2 steel system using nanoindentation instrumented and finite element analysis
- Author
-
Gómez-Ovalle, A. E., Torres, M., Alvarado-Orozco, J. M., Jimenez, S. M. A., Espinosa-Arbelaez, D. G., Gonzalez-Carmona, J. M., Zárate-Medina, J., González-Hernández, J., and Mondragón-Rodríguez, G. C.
- Subjects
Condensed Matter - Materials Science - Abstract
A theoretical-experimental methodology for failure analysis of the c-Al0.66Ti0.33N / Interface / M2 steel coating system is proposed here. This c-Al0.66Ti0.33N coating was deposited by the arc-PVD technique. For coating modeling the traction-separation law and the extended finite element method-XFEM were applied, the cohesive zones model was used for interface modeling and the Ramberg-Osgood law for substrate modeling. Experimental values using the instrumented nanoindentation technique, the scratch test and tensile stress test were obtained and introduced into the model. By means of nanoindentation the elastic modulus of coating, the fracture energy release rate and the nano-hardness. Normal and shear stress values of the interface were obtained with the scratch test, at the adhesive and cohesive critical loads. Vickers indentation was used to generate cracking patterns in the c-Al0.66Ti0.33N / Interface / M2 steel coating system. Radial and lateral cracks were generated and analyzed after transversal FIB cuts of the fracture zones. A finite element analysis was carried out to understand the relationship between the load-displacement curve and mechanical failure of in the system, associating the pop-in with nucleation, crack growth and cracking pattern. This works present a theoretical-experimental methodology for failure analysis of hard coatings (monolithic body) allowing to calculate fracture toughness of the coating material and model cracking patterns caused by contact mechanics.
- Published
- 2018
15. Effect of thermal treatments in high purity Ar on the oxidation behavior of arc-PVD c-Al0.66Ti0.33N coatings
- Author
-
Rodriguez, G. C. Mondragon, Chipatecua-Godoy, Y., Camacho, N., Espinosa-Arbelaez, D. G., Gonzalez-Hernandez, J., and Alvarado-Orozco, J. M.
- Subjects
Condensed Matter - Materials Science - Abstract
The effect of temperature in high purity Ar (low oxygen partial pressure) on the oxidation and crystal phase evolution of c-Al0.66Ti0.33N arc-PVD coatings was investigated. High temperature tribology in Ar jet and adhesion behavior of the oxidized coating were addressed. The use of Ar protects the coating from the oxidation reactions and allowed to shed light into the details and paths of the nitride oxidation process. The c-Al0.66Ti0.33N nitrides were slightly oxidized in Ar even at high temperature. The surface chemistry evaluation shows very thin Al- and Ti-based oxide layers formation after 700C in Ar. However, the onset formation of the rutile TiO2 oxide was detected only after 900C and was clearly found by low-angle XRD diffraction after 1000C. XPS analysis of the oxidized samples at 800C indicated the formation of extremely thin layers mainly composed of mixed oxides a-Al2O3 g-Al2O3 and r-TiO2. Gradual changes in the chemical composition of the oxidized coatings observed at 900C clearly demonstrate the formation of gradient boundaries between Al-rich and Ti-rich oxy-nitride layers. After 1000C at least four oxides and oxi-nitrides layers and interlayers were found. Additionally, it is suspected that the transition oxide phases such as c-TiO, c-Al0.54Ti2.46O0.28N4.58, alpha-Al2TiO5 and TiOxNy might be precursors leading to the formation of thermodynamically stable rutile and alumina phases. Surface inspection after high temperature tribology in Ar jet showed formation of tensile cracks in the wear tracks and wear processes due to high size particle adhesion-abrasion and low size particle micro-ploughing of hard nitrides, oxi-nitrides and brittle oxide particles. Adhesion tests performed after high temperature tribology in Ar showed critical load decrease related to cohesive and adhesive damages at the contact point of the scratch track., Comment: 27 pages, 14 figures, original draft, accepted to Surface and Coatings Technology
- Published
- 2018
16. Laser Cladding Deposition of a Fe-based Metallic Glass on 304 Stainless Steel Substrates
- Author
-
Garcia-Herrera, J. E., Henao, J., Espinosa-Arbelaez, D. G., Gonzalez-Carmona, J. M., Felix-Martinez, C., Santos-Fernandez, R., Corona-Castuera, J., Poblano-Salas, C. A., and Alvarado-Orozco, J. M.
- Published
- 2022
- Full Text
- View/download PDF
17. User defined elements in ANSYS for 2D multiphysics modeling of superconducting magnets
- Author
-
Brouwer, L, Arbelaez, D, Auchmann, B, Bortot, L, and Stubberud, E
- Subjects
superconducting magnets ,multiphysics modeling ,finite element ,quench protection ,superconducting undulators ,Condensed Matter Physics ,Materials Engineering ,Electrical and Electronic Engineering ,General Physics - Abstract
Dynamic simulation of superconducting magnets is critical for the design of quench protection systems to prevent potentially damaging temperatures and high voltage from developing after magnet quench. Modeling these scenarios is challenging due to the many multiscale phenomena which impact magnet behavior. These range from conductor scale effects of quench and interfilament coupling currents up to the behavior of the magnet in its powering and protection circuit. In addition, a strong coupling between electromagnetic and thermal domains is required to capture temperature and field dependent material properties and quench behavior. We present a finite element approach which integrates the various effects into the commercial software ANSYS by means of programming new element types. This is shown capable of simulating the strongly coupled transient electromagnetic, thermal, and circuit behavior of superconducting magnets required for quench protection studies. A benchmarking study is presented which shows close agreement between the new ANSYS elements and a COMSOL Multiphysics implementation developed at CERN for dump resistor and coupling loss induced quench based magnet protection of a Nb3Sn block dipole. Following this, the ANSYS implementation is shown reproducing strongly coupled quench back behavior observed during the test of a Nb3Sn superconducting undulator prototype at Lawrence Berkeley National Laboratory.
- Published
- 2019
18. Test results for a superconducting 28-GHz ion source magnet for FRIB
- Author
-
Arbelaez, D, Pan, H, Myers, S, Hafalia, AR, Wang, X, Turqueti, M, Taylor, J, Prestemon, SO, Felice, H, Rochepault, E, Pozdeyev, E, Machicoane, G, Omelayenko, M, and Rao, X
- Subjects
ECR source ,superconducting magnet ,quench protection ,training ,Electrical and Electronic Engineering ,Condensed Matter Physics ,Materials Engineering ,General Physics - Abstract
The superconducting ECR source magnet for the Facility for Rare Isotope Beams at Michigan State University was designed and built by the Superconducting Magnet Group at Lawrence Berkeley National Laboratory (LBNL). The 28-GHz NbTi ion source magnet features a sextupole-in-solenoids configuration, which is comparable to the VENUS ECR magnet operated at LBNL. A shell-based support structure using bladders and keys has been incorporated into the design to allow for adjustments of the preload and reversibility of the magnet assembly process. The magnet has been assembled and successfully tested to operational currents at LBNL. This paper describes the basic design of the magnet and the passive quench protection system. The test results are also presented, including the quench behavior of the magnet, the training performance, and the magnetic measurement results.
- Published
- 2019
19. Mechanical Study of a Superconducting 28-GHz Ion Source Magnet for FRIB
- Author
-
Pan, H, Arbelaez, D, Felice, H, Hafalia, AR, Lipton, T, Myers, S, MacHicoane, G, Omelayenko, M, Prestemon, S, Pozdeyev, E, Rochepault, E, and Rao, X
- Subjects
Mechanical ,ECR superconducting magnet ,strain ,sextupole ,General Physics ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering - Abstract
The superconducting electron cyclotron resonance (ECR) source magnet for the facility for rare isotope beams at Michigan State University was designed and built by the Superconducting Magnet Group at Lawrence Berkeley National Laboratory (LBNL) in 2017. The 28 GHz NbTi ion source magnet features a sextupole-in-solenoids configuration which is comparable to the VENUS ECR magnet operated at LBNL. However, the mechanical design of this magnet utilizes a shell-based support structure which allows fine adjustments to the sextupole preload and reversibility of the magnet assembly process. The magnet has been assembled and tested to operational currents at LBNL. This paper describes the mechanical analyses performed to estimate the sextupole's and solenoids' preloads. We will report on the 3-D finite element analysis during room temperature assembly, cool-down, and magnet excitation, and then describe the magnet preload operations. Finally, we will describe the performance of the support structure during the quench training.
- Published
- 2019
20. The 16 T Dipole Development Program for FCC and HE-LHC
- Author
-
Schoerling, D, Arbelaez, D, Auchmann, B, Bajko, M, Ballarino, A, Barzi, E, Bellomo, G, Benedikt, M, Bermudez, SI, Bordini, B, Bottura, L, Brouwer, L, Bruzzone, P, Caiffi, B, Caspi, S, Chakraborti, A, Coatanea, E, De Rijk, G, Dhalle, M, Durante, M, Fabbricatore, P, Farinon, S, Felice, H, Fernandez, A, Fernandez, IS, Gao, P, Gold, B, Gortsas, T, Gourlay, S, Juchno, M, Kashikhin, V, Kokkinos, C, Kokkinos, S, Koskinen, K, Lackner, F, Lorin, C, Loukas, K, Louzguiti, A, Lyytikainen, K, Mariotto, S, Marchevsky, M, Montenero, G, Munilla, J, Novitski, I, Ogitsu, T, Pampaloni, A, Perez, JC, Pes, C, Petrone, C, Polyzos, D, Prestemon, S, Prioli, M, Ricci, AM, Rifflet, JM, Rochepault, E, Russenschuck, S, Salmi, T, Santillana, IA, Savary, F, Scheuerlein, C, Segreti, M, Senatore, C, Sorbi, M, Statera, M, Stenvall, A, Tavian, L, Tervoort, T, Tommasini, D, Toral, F, Valente, R, Velev, G, Verweij, AP, Wessel, S, Wolf, F, Zimmermann, F, and Zlobin, AV
- Subjects
FCC ,Nb3Sn ,superconducting ,T ,General Physics ,Electrical and Electronic Engineering ,Condensed Matter Physics ,Materials Engineering - Abstract
A future circular collider (FCC) with a center-of-mass energy of 100 TeV and a circumference of around 100 km, or an energy upgrade of the LHC (HE-LHC) to 27 TeV require bending magnets providing 16 T in a 50-mm aperture. Several development programs for these magnets, based on Nb3Sn technology, are being pursued in Europe and in the U.S. In these programs, cos-theta, block-type, common-coil, and canted-cos-theta magnets are explored; first model magnets are under manufacture; limits on conductor stress levels are studied; and a conductor with enhanced characteristics is developed. This paper summarizes and discusses the status, plans, and preliminary results of these programs.
- Published
- 2019
21. Magnetic Field Correction Methods for Hybrid Permanent Magnet and Superconducting Undulators
- Author
-
Arbelaez, D, Leitner, M, Marks, S, Mccombs, K, Morsch, M, Pan, H, Prestemon, SO, Seyler, T, and Schlueter, RD
- Subjects
Atomic ,Molecular and Optical Physics ,Physical Sciences ,Optical Physics ,Atomic ,molecular and optical physics - Published
- 2018
22. Improved modeling of canted–cosine–theta magnets
- Author
-
Brouwer, L, Arbelaez, D, Caspi, S, Marchevsky, M, and Prestemon, S
- Subjects
Accelerator magnets ,canted-cosine-theta ,high field ,superconducting dipole ,advanced modeling ,General Physics ,Electrical and Electronic Engineering ,Condensed Matter Physics ,Materials Engineering - Abstract
The Canted–Cosine–Theta is a design option for the next generation of high field superconducting dipoles being pursued within the US Magnet Development Program. This paper presents new modeling techniques developed for design and analysis of CCT magnets. For mechanical modeling in ANSYS, three approaches with increasing accuracy are compared: 2-D symmetry models; 3-D periodic symmetry models; and full 3-D models. Methods for the static and transient magnetic simulation using ANSYS are presented with a focus on circuit-coupled models for predicting magnet behavior following quench. Where applicable, simulation results are compared to data from CCT magnet tests at Berkeley.
- Published
- 2018
23. Status of the 16 T dipole development program for a future hadron collider
- Author
-
Tommasini, D, Arbelaez, D, Auchmann, B, Bajas, H, Bajko, M, Ballarino, A, Barzi, E, Bellomo, G, Benedikt, M, Bermudez, SI, Bordini, B, Bottura, L, Brower, L, Buzio, M, Caiffi, B, Caspi, S, Dhalle, M, Durante, M, DeRijk, G, Fabbricatore, P, Farinon, S, Ferracin, P, Gao, P, Gourlay, S, Juchno, M, Kashikhin, V, Lackner, F, Lorin, C, Marchevsky, M, Marinozzi, V, Martinez, T, Munilla, J, Novitski, I, Ogitsu, T, Ortwein, R, Perez, JC, Petrone, C, Prestemon, S, Prioli, M, Rifflet, JM, Rochepault, E, Russenschuck, S, Salmi, T, Savary, F, Schoerling, D, Segreti, M, Senatore, C, Sorbi, M, Stenvall, A, Todesco, E, Toral, F, Verweij, AP, Wessel, S, Wolf, F, and Zlobin, AV
- Subjects
Future circular collider ,superconducting ,Nb3Sn ,T ,General Physics ,Electrical and Electronic Engineering ,Condensed Matter Physics ,Materials Engineering - Abstract
A next step of energy increase of hadron colliders beyond the LHC requires high-field superconducting magnets capable of providing a dipolar field in the range of 16 T in a 50-mm aperture with accelerator quality. These characteristics could meet the requirements for an upgrade of the LHC to twice the present beam energy or for a 100-TeV center of mass energy future circular collider. This paper summarizes the activities and plans for the development of these magnets, in particular within the 16 T Magnet Technology Program, the WP5 of the EuroCirCol, and the U.S. Magnet Development Program.
- Published
- 2018
24. Strain Distribution in REBCO-Coated Conductors Bent with the Constant-Perimeter Geometry
- Author
-
Wang, X, Arbelaez, D, Caspi, S, Prestemon, SO, Sabbi, GL, and Shen, T
- Subjects
Bending strain ,REBa2Cu3O7-delta (REBCO ,RE = rare earth) coated conductors ,rectifying developable surface ,REBa2Cu3O7-delta (REBCO ,RE = rare earth) coated conductors ,General Physics ,Electrical and Electronic Engineering ,Condensed Matter Physics ,Materials Engineering - Abstract
Cable and magnet applications require bending REBa2 Cu3O 7-δ (REBCO, RE = rare earth) tapes around a former to carry high current or generate specific magnetic fields. With a high aspect ratio, REBCO tapes favor the bending along their broad surfaces (easy way) than their thin edges (hard way). The easy-way bending forms can be effectively determined by the constant-perimeter method that was developed in the 1970s to fabricate accelerator magnets with flat thin conductors. The method, however, does not consider the strain distribution in the REBCO layer that can result from bending. Therefore, the REBCO layer can be overstrained and damaged even if it is bent in an easy way as determined by the constant-perimeter method. To address this issue, we developed a numerical approach to determine the strain in the REBCO layer using the local curvatures of the tape neutral plane. Two orthogonal strain components are determined: the axial component along the tape length and the transverse component along the tape width. These two components can be used to determine the conductor critical current after bending. The approach is demonstrated with four examples relevant for applications: a helical form for cables, forms for canted cos θ dipole and quadrupole magnets, and a form for the coil end design. The approach allows us to optimize the design of REBCO cables and magnets based on the constant-perimeter geometry and to reduce the strain-induced critical current degradation.
- Published
- 2017
25. Simulation of Thermo-Mechanical Stresses After a Quench in the 15 T Test Facility Dipole Magnet
- Author
-
Vallone, G., primary, Ravaioli, E., additional, Anderssen, E., additional, Arbelaez, D., additional, Fernandez, JL. Rudeiros, additional, and Sabbi, GL., additional
- Published
- 2024
- Full Text
- View/download PDF
26. Effect of Conventional Heat Treatments on the Microstructure and Microhardness of IN718 Obtained by Wrought and Additive Manufacturing
- Author
-
Franco-Correa, J. C., Martínez-Franco, E., Alvarado-Orozco, J. M., Cáceres-Díaz, L. A., Espinosa-Arbelaez, D. G., and Villada, J. A.
- Published
- 2021
- Full Text
- View/download PDF
27. Development of the manufacturing and QA processes for the magnetic modules of the LCLS-II soft X-ray undulators
- Author
-
Ray, KL, Arbelaez, D, Band, A, Bianculli, D, Brown, A, Corlett, J, DeMello, AJ, Dougherty, J, Garcia Fajardo, L, Hanzel, K, Humphries, D, Jung, JY, Leitner, D, Leitner, M, Marks, S, McCombs, K, Munson, DV, Sadlier, DA, Schlueter, R, Wallén, E, Waring, V, Zikmund, A, Bruch, D, Callen, A, Jansa, G, Martinez-Galarce, D, Nuhn, HD, Ortiz, E, Oven, Rowen, M, and Wolf, Z
- Abstract
A new free electron laser being built at SLAC National Accelerator Laboratory, the Linear Coherent Light Source II (LCLS-II), will use 21 soft x-ray undulators (SXR) and 32 hard x-ray undulators (HGVPU). Lawrence Berkeley National Laboratory (LBNL) is responsible for the design and manufacturing of all variable-gap, hybrid permanent-magnet undulators. The physics requirements for the undulators specify a longitudinal pole misalignment maximum rms error of 25 µm and a vertical pole misalignment maximum error of 50 µm. In addition, magnet positioning critically influences the gap-dependent field properties due to saturation effects at the smallest operational gaps. This paper discusses the manufacturing and QA methods developed to carefully control the longitudinal and vertical pole and magnet positions during undulator production. Inspection results are discussed based on data gathered during construction of a prototype as well as pre-production soft x-ray undulator.
- Published
- 2017
28. Design of a canted-cosine-theta superconducting dipole magnet for future colliders
- Author
-
Caspi, S, Arbelaez, D, Brouwer, L, Gourlay, S, Prestemon, S, and Auchmann, B
- Subjects
CCT ,Canted-Cosine-Theta ,superconducting ,magnet ,high field ,dipole ,16T ,2-in-1 ,General Physics ,Electrical and Electronic Engineering ,Condensed Matter Physics ,Materials Engineering - Abstract
A four-layer canted-cosine-theta 16-T dipole has been designed as a possible candidate for future hadron colliders. The design maintains part of the future-circular-collider magnet requirements, i.e., a 50 mm clear bore and 16 T operating at 1.9 K. The magnet intercepts Lorentz forces with an internal structure of ribs and spars, minimizes conductor, and reduces the number of layers and magnet size by using wide cables. The role of iron and its impact on field and magnet size is discussed. A three-dimensional magnetic analysis was carried out for 1-in-1 and 2-in-1 designs including a structural analysis for the 1-in-1 case. Thoughts on future improvements during winding are also discussed.
- Published
- 2017
29. Modeling Training in Nb3Sn Superconducting Magnets
- Author
-
Vallone, G., Anderssen, E., Arbelaez, D., Brouwer, L., Ferracin, P., Fernandez, JL Rudeiros, Shen, T., and Teyber, R.
- Abstract
Stress managed magnet designs allow to limit the strain and stresses applied to the conductor during assembly and operation. In canted cos(
) (CCT) designs, the conductor is wound around a mandrel: the impregnation process creates a bonding between the two, that can fail during magnet powering. The energy releases due to debonding are considered a potential cause of training quenches. In this study, we investigate these events modeling the mandrel-conductor interfaces by means of cohesive zone material models. The material properties were calibrated by means of measurements performed on representative interfaces, and the models were validated comparing the results with strain gauge measurements. A thermal model was used to compute the local temperature increase in the strands as a function of the energy released by debonding and frictional sliding across the newly formed interfaces. The result was then used to define a quench condition for the model, allowing to simulate the full training process of the CCT magnet. The obtained training curve is in reasonable agreement with the experimental results.$\theta$ - Published
- 2024
- Full Text
- View/download PDF
30. Interface Characterization for Superconducting Magnets
- Author
-
Fernandez, J. L. Rudeiros, Bird, C., Arbelaez, D., Ferracin, P., Prestemon, S., Shen, T., and Vallone, G.
- Abstract
The nature of the resin used in the impregnation of superconducting magnets plays a crucial role on the magnet's performance. The interfacial region between magnet constituents has been postulated as the potential region for training origin. Its characterization and analysis are therefore crucial to understand the phenomena involved in magnet training. In this paper, we focus on the development of an experimental method for the characterization of the interfacial bond strength between individual constituents normally found in superconducting magnets. The sample preparation developed for this method as well as the required hardware for testing are presented and discussed. The initial studies focus on a copper strand and different resins normally used in superconducting magnets, such as CTD-101 K, NHMFL Mix61, paraffin wax and Stycast 2850. The initial results are reported and discussed for experiments at room temperature and 77 K, analyzed based on a shear stress failure criteria, and demonstrating the low energy dissipation of the paraffin wax system that might explain the performance improvement of superconducting magnets based on this resin in terms of training.
- Published
- 2024
- Full Text
- View/download PDF
31. Conceptual design of storage ring magnets for a diffraction limited light source upgrade of ALS, ALS-U
- Author
-
Swenson, C, Arbelaez, D, Jung, JY, Osborn, J, Prestemon, S, Wallen, E, Steier, RSC, Sun, C, and Robin, D
- Abstract
Lawrence Berkeley National Laboratory (LBNL) has been engaged in an internal laboratory directed research and development project to define a suitable accelerator physics lattice to support the diffraction limited upgrade of the Advanced Light Source (ALS). [1] Diffraction limited lattices require strong focusing elements throughout. Magnetics design is challenging in that the high gradient magnetic structures are required to operate in close proximity. Lattice development requires a coordinated engineering design effort to ensure the lattice design feasibility. We will present a review of the results of our magnet scoping studies as well as conceptual design specifications for the ALS-U lattice dipole, quadrupole, and sextupole magnet systems.
- Published
- 2016
32. Current Status of the High Field Cable Test Facility at Fermilab
- Author
-
velev, G., primary, Arbelaez, D., additional, Arcola, C., additional, Bruce, R., additional, Kashikhin, V., additional, Koshelev, S., additional, Makulski, A., additional, Marinozzi, V., additional, Nikolic, V., additional, Orris, D., additional, Prestemon, S., additional, Sabbi, G., additional, Tope, T., additional, and Yuan, X., additional
- Published
- 2023
- Full Text
- View/download PDF
33. Modeling heat transfer from quench protection heaters to superconducting cables in Nb3Sn magnets
- Author
-
Salmi, T., Arbelaez, D., Caspi, S., Felice, H., Prestemon, S., Chlachidze, G., and Kate, H. H. J. ten
- Subjects
Physics - Accelerator Physics - Abstract
We use a recently developed quench protection heater modeling tool for an analysis of heater delays in superconducting high-field Nb3Sn accelerator magnets. The results suggest that the calculated delays are consistent with experimental data, and show how the heater delay depends on the main heater design parameters., Comment: 8 pages, Contribution to WAMSDO 2013: Workshop on Accelerator Magnet, Superconductor, Design and Optimization; 15 - 16 Jan 2013, CERN, Geneva, Switzerland
- Published
- 2014
- Full Text
- View/download PDF
34. Error Analysis and Field Correction Methods in Superconducting Undulators
- Author
-
Rochepault, E, Arbelaez, D, Prestemon, SO, and Schlueter, RD
- Subjects
Correction ,free electron laser ,magnetic design ,superconducting ,tuning ,undulators ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics - Abstract
In Free Electron Lasers (FEL), the electron trajectory through the undulator must meet stringent requirements in terms of trajectory wander and phase variation. This paper analyzes the feasibility of using line current pairs as correctors for superconducting undulators given a set of expected fabrication errors. A tolerance study has first been performed to investigate the impact of geometrical errors on the field quality. These errors are corrected with line currents that increase or decrease the magnetic field locally. Once the uncorrected trajectory is known, an algorithm finds the minimum number of correctors required to fulfill the trajectory specifications, and gives the corrector locations. All the correctors can be powered with the same current, greatly simplifying the implementation. The current then offers a degree of freedom to correct the trajectory and can be tuned dynamically as a function of the magnetic deflection.
- Published
- 2014
35. Structural Design and Analysis of Canted–Cosine–Theta Dipoles
- Author
-
Brouwer, L, Arbelaez, D, Caspi, S, Felice, H, Prestemon, S, and Rochepault, E
- Subjects
Accelerator magnets ,canted-cosine-theta ,high field ,superconducting magnets ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics - Abstract
The Canted-Cosine-Theta (CCT) magnet design offer significant reductions in conductor stress by using mandrels t prevent the accumulation of operating Lorentz forces. Each mandre consists of a cylindrical spar with ribs guiding the conductor These ribs intercept the turn-To-Turn accumulation of forces b transferring them to the spar. Design studies of a layered CC coil pack coupled to a shell-based structure are shown. The us of a 3-D periodic symmetry region to reduce the problem size fo finite element modeling is detailed along with a discussion of axia boundary conditions. ANSYS calculation results for a two laye NbTi dipole being constructed at LBNL (CCT1) are presented ANSYS calculations show the Lorentz force induced stress i CCT1 at the single turn level, demonstrating interception an suggesting investigation of CCT design with minimal structur external to the coil pack.
- Published
- 2014
36. A Novel Computer Code for Modeling Quench Protection Heaters in High-Field $\hbox{Nb}_{3}\hbox{Sn}$ Accelerator Magnets
- Author
-
Salmi, T, Arbelaez, D, Caspi, S, Felice, H, Mentink, MGT, Prestemon, S, Stenvall, A, and Kate, HHJ ten
- Subjects
Protection heaters ,quench protection ,superconducting magnets ,thermal modeling ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics - Abstract
This paper presents a recently developed Code for Heater Delay Analysis (CoHDA), which is a tool for modeling protection heater induced quenches in superconducting Nb3S high-field accelerator magnets. The CoHDA thermal model numerically computes the heat diffusion from the heater to the coil and estimates the time delay to quench initiation by comparing the coil temperature with its critical surface. The model takes into account heater geometry, power, and various insulation layers and coil properties. Computational heater delays are compared with experimental data from the U.S. Large Hadron Collider Accelerator Research Program Nb3S High-Gradient Quadrupole magnet with good agreement. Based on the results, CoHDA provides a useful tool for quench protection design in impregnated magnets. Copyright © 2014 IEEE.
- Published
- 2014
37. The Installation and Commissioning of the Advanced Light Source Combined-Function Harmonic Sextupoles for the Low Emittance Upgrade
- Author
-
Madur, A, Arbelaez, D, Bailey, B, Biocca, A, Black, A, Casey, P, Chun, C, Colomb, D, Humphries, D, Li, N, Marks, S, Nishimura, H, Pappas, C, Petermann, K, Prestemon, S, Rawlins, A, Robin, D, Scarvie, T, Schlueter, R, Steier, C, Troy, S, Wan, W, Williams, E, Lixin, Y, Zhou, Q, Jin, J, Zhang, J, Chen, C, Wen, Y, and Wu, J
- Subjects
Combined-function sextupole ,hysteresis ,magnet installation ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics - Abstract
The Advanced Light Source (ALS) is a thirdgeneration light source in operation since 1993. This light source is providing state-of-the-art performance to more than 40 beamlines and their users, due to the upgrades that have been completed over the last few years. The storage ring upgrade project that is developed here will allow the ALS to provide the 40 beamline users with higher photon beam brightness (factor of 2 or 3) by having its storage ring lattice modified. Forty-eight harmonic sextupole magnets with integrated dipole correctors and skew quadrupole coils will be introduced, which will require a level of installation activity not seen at the ALS since its original construction in 1991. Introducing new combined-function magnets in an existing storage ring is a challenge due to the limited space available and a balance had to be found between magnet performance and spatial constraints. After an introduction reviewing the characteristics of the three design families of the 48 combined-function magnets, the magnet fabrication and installation are developed along with analyses based on the magnetic measurements and the ALS storage ring commissioning results.
- Published
- 2014
38. A plan for the development of superconducting Undulator prototypes for LCLS-II and future FELs
- Author
-
Emma, P, Holtkamp, N, Nuhn, HD, Arbelaez, D, Corlett, J, Myers, S, Prestemon, S, Schlueter, R, Doose, C, Fuerst, J, Hasse, Q, Ivanyushenkov, Y, Kasa, M, Pile, G, Trakhtenberg, E, and Gluskin, E
- Abstract
Undulators serve as the primary source of radiation for modern storage rings, and more recently for the advent of Free-Electron Lasers (FELs). The performance of future FELs can be greatly enhanced using the much higher magnetic fields of superconducting undulators (SCU) [1]. For example, the LCLS-II hard x-ray undulator can be shortened by up to 70 m using an SCU in place of a PMU (permanent magnet undulator), or its spectral performance can be critically improved when using a similar length. In addition, SCUs are expected to be orders of magnitude less sensitive to radiation dose; a major issue at LCLS-II with its 1-MHz electron bunch rate. We present a funded R&D collaboration between SLAC, ANL, and LBNL, which aims to demonstrate the viability of superconducting undulators for FELs by building, testing, measuring, and tuning two 1.5-m long planar SCU prototypes using two different technologies: NbTi at ANL and Nb3Sn at LBNL. Our goal is to review and reassess the LCLS-II HXR baseline plans (PMU) in July of 2015, after the development and evaluation of both prototypes, possibly in favor of an SCU for LCLS-II.
- Published
- 2014
39. A novel computer code for modeling quench protection heaters in high-field Nb3Sn accelerator magnets
- Author
-
Salmi, T, Arbelaez, D, Caspi, S, Felice, H, Mentink, MGT, Prestemon, S, Stenvall, A, and Ten Kate, HHJ
- Subjects
Protection heaters ,quench protection ,superconducting magnets ,thermal modeling ,Electrical and Electronic Engineering ,Condensed Matter Physics ,Materials Engineering ,General Physics - Abstract
This paper presents a recently developed Code for Heater Delay Analysis (CoHDA), which is a tool for modeling protection heater induced quenches in superconducting Nb3S high-field accelerator magnets. The CoHDA thermal model numerically computes the heat diffusion from the heater to the coil and estimates the time delay to quench initiation by comparing the coil temperature with its critical surface. The model takes into account heater geometry, power, and various insulation layers and coil properties. Computational heater delays are compared with experimental data from the U.S. Large Hadron Collider Accelerator Research Program Nb3S High-Gradient Quadrupole magnet with good agreement. Based on the results, CoHDA provides a useful tool for quench protection design in impregnated magnets. Copyright © 2014 IEEE.
- Published
- 2014
40. Conceptual Design of 20 T Hybrid Accelerator Dipole Magnets
- Author
-
Ferracin, P., primary, Ambrosio, G., additional, Anerella, M., additional, Arbelaez, D., additional, Brouwer, L., additional, Barzi, E., additional, Cooley, L. D., additional, Cozzolino, J., additional, Garcia Fajardo, L., additional, Gupta, R., additional, Juchno, M., additional, Kashikhin, V. V., additional, Kurian, F., additional, Marinozzi, V., additional, Novitski, I., additional, Rochepault, E., additional, Stern, J., additional, Vallone, G., additional, Yahia, B., additional, and Zlobin, A.V., additional
- Published
- 2023
- Full Text
- View/download PDF
41. Design concepts for a next generation light source at LBNL
- Author
-
Corlett, JN, Allezy, A, Arbelaez, D, Baptiste, K, Byrd, J, Daniels, C, De Santis, S, Delp, W, Denes, P, Donahue, R, Doolittle, L, Emma, PJ, Filippetto, D, Floyd, J, Harkins, J, Huang, G, Jung, JY, Li, D, Pui Lou, T, Luo, T, Marcus, G, Monroy, MT, Nishimura, H, Padmore, HA, Papadopoulos, C, Pappas, C, Paret, S, Penn, G, Placidi, M, Prestemon, S, Prosnitz, D, Qian, H, Qiang, J, Ratti, A, Reinsch, M, Robin, D, Sannibale, F, Schoenlein, RW, Serrano, C, Staples, J, Steier, C, Sun, C, Venturini, M, Waldron, WL, Wan, W, Warwick, T, Wells, R, Wilcox, R, Zimmermann, S, Zolotorev, M, Ginsburg, C, Kephart, R, Klebaner, AL, Peterson, T, Sukhanov, A, Arenius, D, Neil, GR, Powers, T, Preble, JP, Adolphsen, C, Bane, K, Ding, Y, Huang, Z, Nantista, C, Ng, CK, Nuhn, HD, Rivetta, C, and Stupakov, G
- Abstract
The NGLS collaboration is developing design concepts for a multi-beamline soft x-ray FEL array powered by a superconducting linear accelerator, operating with a high bunch repetition rate of approximately 1 MHz. The CW superconducting linear accelerator design is based on developments of TESLA and ILC technology, and is supplied by an injector based on a high-brightness, highrepetition- rate photocathode electron gun. Electron bunches from the linac are distributed by RF deflecting cavities to the array of independently configurable FEL beamlines with nominal bunch rates of ∼100 kHz in each FEL, with uniform pulse spacing, and some FELs capable of operating at the full linac bunch rate. Individual FELs may be configured for different modes of operation, including self-seeded and external-laser-seeded, and each may produce high peak and average brightness x-rays with a flexible pulse format, and with pulse durations ranging from femtoseconds and shorter, to hundreds of femtoseconds. In this paper we describe current design concepts, and progress in RandD activities. Copyright © 2013 CC-BY-3.0 and by the respective authors.
- Published
- 2013
42. A superconducting magnet mandrel with minimum symmetry laminations for proton therapy
- Author
-
Caspi, S, Arbelaez, D, Brouwer, L, Dietderich, DR, Felice, H, Hafalia, R, Prestemon, S, Robin, D, Sun, C, and Wan, W
- Subjects
Curved dipole magnet ,Superconducting ,Gantry ,Hadron therapy ,Canted cosine-theta ,Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Other Physical Sciences ,Nuclear & Particles Physics - Abstract
The size and weight of ion-beam cancer therapy gantries are frequently determined by a large aperture, curved, ninety degree, dipole magnet. The higher fields achievable with superconducting technology promise to greatly reduce the size and weight of this magnet and therefore also the gantry as a whole. This paper reports advances in the design of winding mandrels for curved, canted cosine-theta (CCT) magnets in the context of a preliminary magnet design for a proton gantry. The winding mandrel is integral to the CCT design and significantly affects the construction cost, stress management, winding feasibility, eddy current power losses, and field quality of the magnet. A laminated mandrel design using a minimum symmetry in the winding path is introduced and its feasibility demonstrated by a rapid prototype model. Piecewise construction of the mandrel using this laminated approach allows for increased manufacturing techniques and material choices. Sectioning the mandrel also reduces eddy currents produced during field changes accommodating the scan of beam energies during treatment. This symmetry concept can also greatly reduce the computational resources needed for 3D finite element calculations. It is shown that the small region of symmetry forming the laminations combined with periodic boundary conditions can model the entire magnet geometry disregarding the ends. © 2013 Elsevier B.V.
- Published
- 2013
43. A dispersion and pulse width correction algorithm for the pulsed wire method
- Author
-
Arbelaez, D, Wilks, T, Madur, A, Prestemon, S, Marks, S, and Schlueter, R
- Subjects
Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Other Physical Sciences ,Nuclear & Particles Physics - Abstract
The pulsed wire technique is an attractive option for the measurement of undulators where the measurement access is restricted due to, for example, narrow undulator gaps or cryogenic environments in the case of superconducting undulators. Using the pulsed wire technique, direct measurements of the first and second integrals of the magnetic field can be obtained. However, one of the main limitations of this technique is the error introduced by dispersive wave motion, due to the finite flexural rigidity of the wire. For the measurement of the first integral of the magnetic field, an error is also introduced by the use of a current pulse with finite pulse width. In this paper, a general solution is presented for dispersive wave motion in pulsed wire measurements. A method for the measurement of the dispersive wave speed is presented and demonstrated through experimental examples. An algorithm is derived which corrects the dispersion and finite pulse-width errors in the measurement of first magnetic field integrals and the dispersion error in the measurement of second magnetic field integrals. The effectiveness of the correction algorithms is demonstrated through experimental measurements, and the results are compared with Hall probe measurements on a short undulator. © 2013 Elsevier B.V.
- Published
- 2013
44. Magnetic Field Correction Concepts for Superconducting Undulators
- Author
-
Arbelaez, D, Lee, D, Pan, H, Koettig, T, Bish, P, Prestemon, SO, Dietderich, DR, and Schlueter, RD
- Subjects
Shimming ,superconducting ,tuning ,undulator ,Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics - Abstract
The ability to correct magnetic field errors in a superconducting undulator is critical for the successful application of these devices in future and existing light sources. These field errors, which can emanate from sources such as machining and coil winding imperfections, can lead to reduced light source performance by introducing errors in both the electron trajectory and the relative phase relationship between the oscillating electrons and the emitted photons. In this work, correction schemes are presented, which use a single power supply along with a superconducting switch network to define the path for the current during undulator tuning. The basic switching concept was previously designed and successfully tested at Lawrence Berkeley National Laboratory; the approach presented here is a significant advancement in generalizing and scaling that core concept. A new fabrication method is presented here, which uses lithographic methods to produce current paths and switch heaters on a superconducting film. The effect of an example corrector current path design on the magnetic field is investigated using the Finite Element Method, and the results at various undulator and corrector energization levels are presented. Experimental results from the heater switch concept are also presented. © 2002-2011 IEEE.
- Published
- 2013
45. Relationship Between γ′ Phase Degradation and In-Service GTD-111 First-Stage Blade Local Temperature
- Author
-
Villada, J. A., Bayro-Lazcano, R. G., Martinez-Franco, E., Espinosa-Arbelaez, D. G., Gonzalez-Hernandez, J., and Alvarado-Orozco, J. M.
- Published
- 2019
- Full Text
- View/download PDF
46. HVOF Hydroxyapatite/Titania-Graded Coatings: Microstructural, Mechanical, and In Vitro Characterization
- Author
-
Henao, J., Cruz-bautista, M., Hincapie-Bedoya, J., Ortega-Bautista, B., Corona-Castuera, J., Giraldo-Betancur, A. L., Espinosa-Arbelaez, D. G., Alvarado-Orozco, J. M., Clavijo-Mejía, G. A., Trapaga-Martínez, L. G., and Poblano-Salas, C. A.
- Published
- 2018
- Full Text
- View/download PDF
47. Magnetic Design of the Advanced Light Source Harmonic Sextupoles
- Author
-
Madur, A, Steier, C, Arbelaez, D, Marks, S, Prestemon, S, and Schlueter, R
- Subjects
Condensed Matter Physics ,Electrical and Electronic Engineering ,Materials Engineering ,General Physics - Abstract
Forty-eight harmonic sextupole magnets with integrated dipole correctors and skew quadrupole coils will be introduced in the Advanced Light Source Storage Ring. These new magnets are required to allow the ALS to provide the 40 beamline users with higher photon beam brightness (factor of 2 or 3). Introducing new combined-function magnets in an existing storage ring is a challenge due to the limited space available and a balance had to be found between magnet performance and spatial constraints. Consequently four different magnet designs were required. The calculation and simulation results obtained for each design as well as the impact of the different design choices on the magnetic performance are developed in this paper. © 2002-2011 IEEE.
- Published
- 2012
48. Numerical Investigation of the Quench Behavior of Bi2Sr2CaCu2Ox Wire
- Author
-
Arbelaez, D.
- Subjects
Condensed matter physics, superconductivity and superfluidity ,Particle accelerators - Published
- 2012
49. Fruit, vegetable, and legume intake, and cardiovascular disease and deaths in 18 countries (PURE): a prospective cohort study
- Author
-
Diaz, R, Orlandini, A, Linetsky, B, Toscanelli, S, Casaccia, G, Cuneo, JM Maini, Rahman, O, Yusuf, R, Azad, AK, Rabbani, KA, Cherry, HM, Mannan, A, Hassan, I, Talukdar, AT, Tooheen, RB, Khan, MU, Sintaha, M, Choudhury, T, Haque, R, Parvin, S, Avezum, A, Oliveira, GB, Marcilio, CS, Mattos, AC, Teo, K, Yusuf, S, Dejesus, J, Agapay, D, Tongana, T, Solano, R, Kay, I, Trottier, S, Rimac, J, Elsheikh, W, Heldman, L, Ramezani, E, Dagenais, G, Poirier, P, Turbide, G, Auger, D, De Bluts, A LeBlanc, Proulx, MC, Cayer, M, Bonneville, N, Lear, S, Gasevic, D, Corber, E, de Jong, V, Vukmirovich, I, Wielgosz, A, Fodor, G, Pipe, A, Shane, A, Lanas, F, Seron, P, Martinez, S, Valdebenito, A, Oliveros, M, Wei, Li, Lisheng, Liu, Chunming, Chen, Xingyu, Wang, Wenhua, Zhao, Hongye, Zhang, Xuan, Jia, Bo, Hu, Yi, Sun, Jian, Bo, Xiuwen, Zhao, Xiaohong, Chang, Tao, Chen, Hui, Chen, Qing, Deng, Xiaoru, Cheng, Xinye, He, Jian, Li, Juan, Li, Xu, Liu, Bing, Ren, Wei, Wang, Yang, Wang, Jun, Yang, Yi, Zhai, Manlu, Zhu, Fanghong, Lu, Jianfang, Wu, Yindong, Li, Yan, Hou, Liangqing, Zhang, Baoxia, Guo, Xiaoyang, Liao, Shiying, Zhang, Rongwen, Bian, Xiuzhen, Tian, Dong, Li, Di, Chen, Jianguo, Wu, Yize, Xiao, Tianlu, Liu, Peng, Zhang, Changlin, Dong, Ning, Li, Xiaolan, Ma, Yuqing, Yang, Rensheng, Lei, Minfan, Fu, Jing, He, Yu, Liu, Xiaojie, Xing, Qiang, Zhou, Lopez-Jaramillo, P, Lopez, PA Camacho, Garcia, R, Jurado, LJA, Gómez-Arbeláez, D, Arguello, JF, Dueñas, R, Silva, S, Pradilla, LP, Ramirez, F, Molina, DI, Cure-Cure, C, Perez, M, Hernandez, E, Arcos, E, Fernandez, S, Narvaez, C, Paez, J, Sotomayor, A, Garcia, H, Sanchez, G, David, T, Rico, A, Mony, P, Vaz, M, Bharathi, A V, Swaminathan, S, Kurpad, K Shankar AV, Jayachitra, KG, Kumar, N, Hospital, HAL, Mohan, V, Deepa, M, Parthiban, K, Anitha, M, Hemavathy, S, Rahulashankiruthiyayan, T, Anitha, D, Sridevi, K, Gupta, R, Panwar, RB, Mohan, I, Rastogi, P, Rastogi, S, Bhargava, R, Kumar, R, Thakur, J S, Patro, B, Lakshmi, PVM, Mahajan, R, Chaudary, P, Kutty, V Raman, Vijayakumar, K, Ajayan, K, Rajasree, G, Renjini, AR, Deepu, A, Sandhya, B, Asha, S, Soumya, HS, Kelishadi, R, Bahonar, A, Mohammadifard, N, Heidari, H, Yusoff, K, Ismail, TST, Ng, KK, Devi, A, Nasir, NM, Yasin, MM, Miskan, M, Rahman, EA, Arsad, MKM, Ariffin, F, Razak, SA, Majid, FA, Bakar, NA, Yacob, MY, Zainon, N, Salleh, R, Ramli, MKA, Halim, NA, Norlizan, SR, Ghazali, NM, Arshad, MN, Razali, R, Ali, S, Othman, HR, Hafar, CWJCW, Pit, A, Danuri, N, Basir, F, Zahari, SNA, Abdullah, H, Arippin, MA, Zakaria, NA, Noorhassim, I, Hasni, MJ, Azmi, MT, Zaleha, MI, Hazdi, KY, Rizam, AR, Sazman, W, Azman, A, Khatib, R, Khammash, U, Khatib, A, Giacaman, R, Iqbal, R, Afridi, A, Khawaja, R, Raza, A, Kazmi, K, Zatonski, W, Szuba, A, Zatonska, K, Ilow, R, Ferus, M, Regulska-Ilow, B, Rózanska, D, Wolyniec, M, Alkamel, Ali, M, Kruger, M A, Voster, H H, Schutte, A E, Wentzel-Viljoen, E, Eloff, FC, de Ridder, H, Moss, H, Potgieter, J, Roux, AA, Watson, M, de Wet, G, Olckers, A, Jerling, JC, Pieters, M, Hoekstra, T, Puoane, T, Igumbor, E, Tsolekile, L, Sanders, D, Naidoo, P, Steyn, N, Peer, N, Mayosi, B, Rayner, B, Lambert, V, Levitt, N, Kolbe-Alexander, T, Ntyintyane, L, Hughes, G, Swart, R, Fourie, J, Muzigaba, M, Xapa, S, Gobile, N, Ndayi, K, Jwili, B, Ndibaza, K, Egbujie, B, Rosengren, A, Boström, K Bengtsson, Gustavsson, A, Andreasson, M, Snällman, M, Wirdemann, L, Oguz, A, Imeryuz, N, Altuntas, Y, Gulec, S, Temizhan, A, Karsidag, K, Calik, KBT, Akalin, AAK, Caklili, OT, Keskinler, MV, Erbakan, AN, Yusufali, AM, Almahmeed, W, Swidan, H, Darwish, EA, Hashemi, ARA, Al-Khaja, N, Muscat-Baron, JM, Ahmed, SH, Mamdouh, TM, Darwish, WM, Abdelmotagali, MHS, Awed, SA Omer, Movahedi, GA, Hussain, F, Al Shaibani, H, Gharabou, RIM, Youssef, DF, Nawati, AZS, Salah, ZAR Abu, Abdalla, RFE, Al Shuwaihi, SM, Al Omairi, MA, Cadigal, OD, Alejandrino, R.S., Chifamba, J, Gwaunza, L, Terera, G, Mahachi, C, Murambiwa, P, Machiweni, T, Mapanga, R, Miller, Victoria, Mente, Andrew, Dehghan, Mahshid, Rangarajan, Sumathy, Zhang, Xiaohe, Swaminathan, Sumathi, Dagenais, Gilles, Gupta, Rajeev, Mohan, Viswanathan, Lear, Scott, Bangdiwala, Shrikant I, Schutte, Aletta E, Wentzel-Viljoen, Edelweiss, Avezum, Alvaro, Altuntas, Yuksel, Yusoff, Khalid, Ismail, Noorhassim, Peer, Nasheeta, Chifamba, Jephat, Diaz, Rafael, Rahman, Omar, Mohammadifard, Noushin, Lana, Fernando, Zatonska, Katarzyna, Wielgosz, Andreas, Yusufali, Afzalhussein, Iqbal, Romaina, Lopez-Jaramillo, Patricio, Khatib, Rasha, Rosengren, Annika, Li, Wei, Liu, Jiankang, Liu, Xiaoyun, Yin, Lu, Teo, Koon, Anand, Sonia, and Yusuf, Salim
- Published
- 2017
- Full Text
- View/download PDF
50. Associations of fats and carbohydrate intake with cardiovascular disease and mortality in 18 countries from five continents (PURE): a prospective cohort study
- Author
-
Diaz, R, Orlandini, A, Linetsky, B, Toscanelli, S, Casaccia, G, Cuneo, JM Maini, Rahman, O, Yusuf, R, Azad, AK, Rabbani, KA, Cherry, HM, Mannan, A, Hassan, I, Talukdar, AT, Tooheen, RB, Khan, MU, Sintaha, M, Choudhury, T, Haque, R, Parvin, S, Avezum, A, Oliveira, GB, Marcilio, CS, Mattos, AC, Teo, K, Yusuf, S, Dejesus, J, Agapay, D, Tongana, T, Solano, R, Kay, I, Trottier, S, Rimac, J, Elsheikh, W, Heldman, L, Ramezani, E, Dagenais, G, Poirier, P, Turbide, G, Auger, D, De Bluts, A LeBlanc, Proulx, MC, Cayer, M, Bonneville, N, Lear, S, Gasevic, D, Corber, E, de Jong, V, Vukmirovich, I, Wielgosz, A, Fodor, G, Pipe, A, Shane, A, Lanas, F, Seron, P, Martinez, S, Valdebenito, A, Oliveros, M, Wei, Li, Lisheng, Liu, Chunming, Chen, Xingyu, Wang, Wenhua, Zhao, Hongye, Zhang, Xuan, Jia, Bo, Hu, Yi, Sun, Jian, Bo, Xiuwen, Zhao, Xiaohong, Chang, Tao, Chen, Hui, Chen, Qing, Deng, Xiaoru, Cheng, Xinye, He, Jian, Li, Juan, Li, Xu, Liu, Bing, Ren, Wei, Wang, Yang, Wang, Jun, Yang, Yi, Zhai, Manlu, Zhu, Fanghong, Lu, Jianfang, Wu, Yindong, Li, Yan, Hou, Liangqing, Zhang, Baoxia, Guo, Xiaoyang, Liao, Shiying, Zhang, Rongwen, Bian, Xiuzhen, Tian, Dong, Li, Di, Chen, Jianguo, Wu, Yize, Xiao, Tianlu, Liu, Peng, Zhang, Changlin, Dong, Ning, Li, Xiaolan, Ma, Yuqing, Yang, Rensheng, Lei, Minfan, Fu, Jing, He, Yu, Liu, Xiaojie, Xing, Qiang, Zhou, Lopez-Jaramillo, P, Lopez, PA Camacho, Garcia, R, Jurado, LJA, Gómez-Arbeláez, D, Arguello, JF, Dueñas, R, Silva, S, Pradilla, LP, Ramirez, F, Molina, DI, Cure-Cure, C, Perez, M, Hernandez, E, Arcos, E, Fernandez, S, Narvaez, C, Paez, J, Sotomayor, A, Garcia, H, Sanchez, G, David, T, Rico, A, Mony, P, Vaz, M, Bharathi, A V, Swaminathan, S, Kurpad, K Shankar AV, Jayachitra, KG, Kumar, N, Hospital, HAL, Mohan, V, Deepa, M, Parthiban, K, Anitha, M, Hemavathy, S, Rahulashankiruthiyayan, T, Anitha, D, Sridevi, K, Gupta, R, Panwar, RB, Mohan, I, Rastogi, P, Rastogi, S, Bhargava, R, Kumar, R, Thakur, J S, Patro, B, Lakshmi, PVM, Mahajan, R, Chaudary, P, Kutty, V Raman, Vijayakumar, K, Ajayan, K, Rajasree, G, Renjini, AR, Deepu, A, Sandhya, B, Asha, S, Soumya, HS, Kelishadi, R, Bahonar, A, Mohammadifard, N, Heidari, H, Yusoff, K, Ismail, TST, Ng, KK, Devi, A, Nasir, NM, Yasin, MM, Miskan, M, Rahman, EA, Arsad, MKM, Ariffin, F, Razak, SA, Majid, FA, Bakar, NA, Yacob, MY, Zainon, N, Salleh, R, Ramli, MKA, Halim, NA, Norlizan, SR, Ghazali, NM, Arshad, MN, Razali, R, Ali, S, Othman, HR, Hafar, CWJCW, Pit, A, Danuri, N, Basir, F, Zahari, SNA, Abdullah, H, Arippin, MA, Zakaria, NA, Noorhassim, I, Hasni, MJ, Azmi, MT, Zaleha, MI, Hazdi, KY, Rizam, AR, Sazman, W, Azman, A, Khatib, R, Khammash, U, Khatib, A, Giacaman, R, Iqbal, R, Afridi, A, Khawaja, R, Raza, A, Kazmi, K, Zatonski, W, Szuba, A, Zatonska, K, Ilow, R, Ferus, M, Regulska-Ilow, B, Rózanska, D, Wolyniec, M, Alkamel, Ali, M, Kruger, M A, Voster, H H, Schutte, A E, Wentzel-Viljoen, E, Eloff, FC, de Ridder, H, Moss, H, Potgieter, J, Roux, AA, Watson, M, de Wet, G, Olckers, A, Jerling, JC, Pieters, M, Hoekstra, T, Puoane, T, Igumbor, E, Tsolekile, L, Sanders, D, Naidoo, P, Steyn, N, Peer, N, Mayosi, B, Rayner, B, Lambert, V, Levitt, N, Kolbe-Alexander, T, Ntyintyane, L, Hughes, G, Swart, R, Fourie, J, Muzigaba, M, Xapa, S, Gobile, N, Ndayi, K, Jwili, B, Ndibaza, K, Egbujie, B, Rosengren, A, Boström, K Bengtsson, Gustavsson, A, Andreasson, M, Snällman, M, Wirdemann, L, Oguz, A, Imeryuz, N, Altuntas, Y, Gulec, S, Temizhan, A, Karsidag, K, Calik, KBT, Akalin, AAK, Caklili, OT, Keskinler, MV, Erbakan, AN, Yusufali, AM, Almahmeed, W, Swidan, H, Darwish, EA, Hashemi, ARA, Al-Khaja, N, Muscat-Baron, JM, Ahmed, SH, Mamdouh, TM, Darwish, WM, Abdelmotagali, MHS, Awed, SA Omer, Movahedi, GA, Hussain, F, Al Shaibani, H, Gharabou, RIM, Youssef, DF, Nawati, AZS, Salah, ZAR Abu, Abdalla, RFE, Al Shuwaihi, SM, Al Omairi, MA, Cadigal, OD, Alejandrino, R.S., Chifamba, J, Gwaunza, L, Terera, G, Mahachi, C, Murambiwa, P, Machiweni, T, Mapanga, R, Dehghan, Mahshid, Mente, Andrew, Zhang, Xiaohe, Swaminathan, Sumathi, Li, Wei, Mohan, Viswanathan, Iqbal, Romaina, Kumar, Rajesh, Wentzel-Viljoen, Edelweiss, Rosengren, Annika, Amma, Leela Itty, Avezum, Alvaro, Chifamba, Jephat, Diaz, Rafael, Khatib, Rasha, Lear, Scott, Lopez-Jaramillo, Patricio, Liu, Xiaoyun, Gupta, Rajeev, Mohammadifard, Noushin, Gao, Nan, Oguz, Aytekin, Ramli, Anis Safura, Seron, Pamela, Sun, Yi, Szuba, Andrzej, Tsolekile, Lungiswa, Wielgosz, Andreas, Yusuf, Rita, Hussein Yusufali, Afzal, Teo, Koon K, Rangarajan, Sumathy, Dagenais, Gilles, Bangdiwala, Shrikant I, Islam, Shofiqul, Anand, Sonia S, and Yusuf, Salim
- Published
- 2017
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.