J.M. O'Callaghan

3.5k total citations
20 papers, 110 citations indexed

About

J.M. O'Callaghan is a scholar working on Electrical and Electronic Engineering, Aerospace Engineering and Biomedical Engineering. According to data from OpenAlex, J.M. O'Callaghan has authored 20 papers receiving a total of 110 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Electrical and Electronic Engineering, 17 papers in Aerospace Engineering and 10 papers in Biomedical Engineering. Recurrent topics in J.M. O'Callaghan's work include Particle Accelerators and Free-Electron Lasers (20 papers), Particle accelerators and beam dynamics (17 papers) and Superconducting Materials and Applications (10 papers). J.M. O'Callaghan is often cited by papers focused on Particle Accelerators and Free-Electron Lasers (20 papers), Particle accelerators and beam dynamics (17 papers) and Superconducting Materials and Applications (10 papers). J.M. O'Callaghan collaborates with scholars based in United States, Germany and France. J.M. O'Callaghan's co-authors include Thomas Weiland, Martin Timm, T. Weiland, Mikhail Krassilnikov, Stefan Setzer, A. Mosnier, J. Seeman, P. Castro, S. Chel and G. W. Flynn and has published in prestigious journals such as Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, Physical Review Special Topics - Accelerators and Beams and TUbilio (Technical University of Darmstadt).

In The Last Decade

J.M. O'Callaghan

18 papers receiving 79 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
J.M. O'Callaghan United States 8 99 92 46 42 14 20 110
G. Jackson United States 6 123 1.2× 104 1.1× 25 0.5× 65 1.5× 27 1.9× 64 139
Elmar Vogel Germany 5 89 0.9× 74 0.8× 25 0.5× 30 0.7× 21 1.5× 29 104
E. Ciapala Switzerland 6 83 0.8× 81 0.9× 22 0.5× 37 0.9× 29 2.1× 33 98
T. Powers United States 8 74 0.7× 107 1.2× 29 0.6× 63 1.5× 35 2.5× 24 125
B. Dwersteg Germany 5 65 0.7× 66 0.7× 43 0.9× 23 0.5× 6 0.4× 15 79
X. Sun China 6 77 0.8× 77 0.8× 43 0.9× 33 0.8× 41 2.9× 32 128
C. Tennant United States 6 77 0.8× 61 0.7× 30 0.7× 24 0.6× 20 1.4× 19 83
D.T. Palmer United States 7 124 1.3× 92 1.0× 71 1.5× 31 0.7× 23 1.6× 27 140
J.-P. Carneiro United States 5 64 0.6× 52 0.6× 26 0.6× 20 0.5× 16 1.1× 22 74
P. D. Barnes United States 7 87 0.9× 91 1.0× 44 1.0× 40 1.0× 29 2.1× 32 122

Countries citing papers authored by J.M. O'Callaghan

Since Specialization
Citations

This map shows the geographic impact of J.M. O'Callaghan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by J.M. O'Callaghan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J.M. O'Callaghan more than expected).

Fields of papers citing papers by J.M. O'Callaghan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J.M. O'Callaghan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by J.M. O'Callaghan. The network helps show where J.M. O'Callaghan may publish in the future.

Co-authorship network of co-authors of J.M. O'Callaghan

This figure shows the co-authorship network connecting the top 25 collaborators of J.M. O'Callaghan. A scholar is included among the top collaborators of J.M. O'Callaghan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with J.M. O'Callaghan. J.M. O'Callaghan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
O'Callaghan, J.M., et al.. (2014). Wakefields in SLAC linac collimators. Physical Review Special Topics - Accelerators and Beams. 17(12). 3 indexed citations
2.
O'Callaghan, J.M.. (2009). Calculating the Loss factor of the LCLS Beam Line Elements for Ultra-Short Bunches. 1 indexed citations
3.
Fisher, A., J.M. O'Callaghan, J. Turner, U. Wienands, & G. Yocky. (2006). Bunch-Length Measurements in PEP-II. Proceedings of the 2005 Particle Accelerator Conference. 1934–1936. 7 indexed citations
4.
O'Callaghan, J.M., et al.. (2004). BUNCH PATTERN WITH MORE BUNCHES IN PEP-II*.
5.
O'Callaghan, J.M., J. Seeman, & Michael Sullivan. (2004). RF heating and temperature oscillations due to a small gap in a PEP-II vacuum chamber. 4. 2294–2296. 7 indexed citations
6.
O'Callaghan, J.M. & A. Mosnier. (2002). Wakefield dynamics in quasi periodic structures. Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167). 1. 467–469. 5 indexed citations
7.
Krassilnikov, Mikhail, et al.. (2002). Investigation of TTF injector alignment with the simulation code V. PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268). 4. 3096–3098. 1 indexed citations
8.
Krassilnikov, Mikhail, et al.. (2002). Beam-based alignment of TTF RF-gun using V-code. PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268). 4. 3099–3101. 5 indexed citations
9.
Krassilnikov, Mikhail, Stefan Setzer, T. Weiland, & J.M. O'Callaghan. (2002). Emittance growth in the FEL RF-gun. PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268). 3. 2257–2259. 2 indexed citations
10.
Mosnier, A., et al.. (2002). Design of a heavily damped superconducting cavity for SOLEIL. Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167). 2. 1709–1711. 8 indexed citations
11.
Krassilnikov, Mikhail, et al.. (2002). Detailed numerical studies of space charge effects in an FEL RF gun. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 483(1-2). 321–325. 12 indexed citations
12.
O'Callaghan, J.M., et al.. (2000). Beam dynamics on-line simulation. 836. 5 indexed citations
13.
Krassilnikov, Mikhail, et al.. (2000). V-Code Beam Dynamics Simulation. 11 indexed citations
14.
O'Callaghan, J.M. & T. Weiland. (1999). The model of ensembles for the beam dynamics simulation. Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366). 2743–2745 vol.4. 9 indexed citations
15.
O'Callaghan, J.M., Martin Timm, T. Weiland, & H. Schlarb. (1999). A proposal for the surface roughness wake field measurement at the TESLA Test Facility. Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366). 2879–2881 vol.4. 2 indexed citations
16.
O'Callaghan, J.M., Martin Timm, & Thomas Weiland. (1999). Single bunch energy spread in the TESLA cryomodule. 6 indexed citations
17.
O'Callaghan, J.M., Martin Timm, & Thomas Weiland. (1998). Transition dynamics of the wake fields of ultra short bunches. 132–136. 7 indexed citations
18.
O'Callaghan, J.M., Martin Timm, & Thomas Weiland. (1998). The Transverse Wake Fields in the TESLA-FEL Transfer Line. TUbilio (Technical University of Darmstadt). 2 indexed citations
19.
O'Callaghan, J.M., Martin Timm, & Thomas Weiland. (1998). THE SURFACE ROUGHNESS WAKEFIELD EFFECT. 140. 5 indexed citations
20.
O'Callaghan, J.M. & Thomas Weiland. (1998). Self-Consistent Model for the Beams in Accelerators. 69. 12 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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