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Cancelation of coherent synchrotron radiation kicks in chicane bunch compressors

Fancong Zeng1, Yi Jiao1,*, Weihang Liu1,2,†, and Cheng-Ying Tsai3,‡

  • *Contact author: jiaoyi@ihep.ac.cn
  • †Contact author: liuwh@ihep.ac.cn
  • ‡Contact author: jcytsai@hust.edu.cn
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Phys. Rev. Accel. Beams 28, 070701 – Published 22 July, 2025

DOI: https://doi.org/10.1103/2vjn-t4qb

Abstract

The most significant advances in accelerator-based light sources (i.e., x-ray free electron lasers) are driven by the production of a kiloampere-level peak current. As a prerequisite to achieve the desired high peak current, multistage symmetric C-chicane compressors are widely utilized due to their simple geometry and effectiveness. However, during the bunch compression process, coherent synchrotron radiation (CSR) effects may lead to transverse emittance dilution, eventually hindering progress toward achieving a higher peak current. Therefore, suppressing or even canceling the CSR effects in chicane compressors is essential. In this paper, we consider a general model of a four-bend chicane and conduct an explicit point-kick analysis of the coherent synchrotron radiation (CSR) effects, based on which we derive the conditions for completely canceling the steady-state CSR (ss-CSR) kicks using analytical formulas. These results yield two novel ss-CSR-immune chicanes that feature nonsymmetric C-shape and S-shape layouts, respectively. We also demonstrate their excellent emittance preservation capabilities with particle tracking simulations. By utilizing the proposed chicanes instead of the widely used C-chicane, the CSR-induced emittance growth can be reduced by about 1 order of magnitude in an almost identical bunch compression scenario.

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References (54)

  1. International Linear Collider, Technical design report, http://www.linearcollider.org/ILC/Publications/ (2013).
  2. L. Bentson, P. Emma, and P. Krejcik, A new bunch compressor chicane for the SLAC linac to produce 30-fsec, 30-kA, 30-GeV electron bunches, in Proceedings of European Particle Accelerator Conference (EPAC 2002), Paris, France (2002), https://accelconf.web.cern.ch/e02/PAPERS/TUPRI031.pdf.
  3. E. Esarey, C. B. Schroeder, and W. P. Leemans, Physics of laser-driven plasma-based electron accelerators, Rev. Mod. Phys. 81, 1229 (2009).
  4. C. A. Lindstrøm, Staging of plasma-wakefield accelerators, Phys. Rev. Accel. Beams 24, 014801 (2021).
  5. W. Ackermann, G. Asova, V. Ayvazyan, A. Azima, N. Baboi, J. Bähr, V. Balandin, B. Beutner, A. Brandt, A. Bolzmann et al., Operation of a free-electron laser from the extreme ultraviolet to the water window, Nat. Photonics 1, 336 (2007).
  6. P. Emma, R. Akre, J. Arthur, R. Bionta, C. Bostedt, J. Bozek, A. Brachmann, P. Bucksbaum, R. Coffee, F. J. Decker et al., First lasing and operation of an ångstrom-wavelength free-electron laser, Nat. Photonics 4, 641 (2010).
  7. T. Ishikawa, H. Aoyagi, T. Asaka, Y. Asano, N. Azumi, T. Bizen, H. Ego, K. Fukami, T. Fukui, Y. Furukawa et al., A compact x-ray free-electron laser emitting in the sub-ångström region, Nat. Photonics 6, 540 (2012).
  8. E. Allaria, R. Appio, L. Badano, W. A. Barletta, S. Bassanese, S. G. Biedron, A. Borga, E. Busetto, D. Castronovo, P. Cinquegrana et al., Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet, Nat. Photonics 6, 699 (2012).
  9. E. Prat, R. Abela, M. Aiba, A. Alarcon, J. Alex, Y. Arbelo, C. Arrell, V. Arsov, C. Bacellar, C. Beard et al., A compact and cost-effective hard x-ray free-electron laser driven by a high-brightness and low-energy electron beam, Nat. Photonics 14, 748 (2020).
  10. H. S. Kang, C. Min, H. Heo, C. Kim, H. Yang, G. Kim, I. Nam, S. Y. Baek, H. J. Choi, G. Mun et al., Hard x-ray free-electron laser with femtosecond-scale timing jitter, Nat. Photonics 11, 708 (2017).
  11. S. Liu, C. Grech, M. Guetg, S. Karabekyan, V. Kocharyan, N. Kujala, C. Lechner, T. Long, N. Mirian, W. Qin et al., Cascaded hard x-ray self-seeded free-electron laser at megahertz repetition rate, Nat. Photonics 17, 984 (2023).
  12. T. Hara, Fully coherent soft x-rays at FERMI, Nat. Photonics 7, 852 (2013).
  13. H. Bartosik, Y. Papaphilippou, and A. Wolski, A first taste of nonlinear beam dynamics, arXiv:2201.01532.
  14. Y. S. Derbenev et al., Microbunch radiative tail-head interaction, Report No. TESLA-FEL 95-05, DESY, 1995.
  15. E. L. Saldin, E. A. Schneidmiller, and M. V. Yurkov, On the coherent radiation of an electron bunch moving in an arc of a circle, Nucl. Instrum. Methods Phys. Res., Sect. A 398, 373 (1997).
  16. H. H. Braun, F. Chautard, R. Corsini, T. O. Raubenheimer, and P. Tenenbaum, Emittance growth during bunch compression in the CTF-II, Phys. Rev. Lett. 84, 658 (2000).
  17. H. H. Braun, R. Corsini, L. Groening, F. Zhou, A. Kabel, T. O. Raubenheimer, R. Li, and T. Limberg, Emittance growth and energy loss due to coherent synchrotron radiation in a bunch compressor, Phys. Rev. ST Accel. Beams 3, 124402 (2000).
  18. K. L. F. Bane, F. J. Decker, Y. Ding, D. Dowell, P. Emma, J. Frisch, Z. Huang, R. Iverson, C. Limborg-Deprey, H. Loos et al., Measurements and modeling of coherent synchrotron radiation and its impact on the LCLS electron beam, Phys. Rev. ST Accel. Beams 12, 030704 (2009).
  19. C. Mitchell, J. Qiang, and P. Emma, Longitudinal pulse shaping for the suppression of coherent synchrotron radiation-induced emittance growth, Phys. Rev. ST Accel. Beams 16, 060703 (2013).
  20. G. Penco, M. Danailov, A. Demidovich, E. Allaria, G. De Ninno, S. Di Mitri, W. M. Fawley, E. Ferrari, L. Giannessi, and M. Trovó, Experimental demonstration of electron longitudinal-phase-space linearization by shaping the photoinjector laser pulse, Phys. Rev. Lett. 112, 044801 (2014).
  21. M. W. Guetg, B. Beutner, E. Prat, and S. Reiche, Optimization of free electron laser performance by dispersion-based beam-tilt correction, Phys. Rev. ST Accel. Beams 18, 030701 (2015).
  22. M. W. Guetg, F. J. Decker, Y. Ding, P. Emma, Z. Huang, and T. Maxwell, Measurement of advanced dispersion-based beam-tilt correction, in Proceedings of the 7th International Particle Accelerator Conference, Busan, Korea (JACoW, Geneva, Switzerland, 2016), MOPOW045, pp. 813–816, 10.18429/JACoW-IPAC2016-MOPOW045.
  23. D. Douglas, Suppression and enhancement of CSR-driven emittance degradation in the IR-FEL driver, Technical Report No. JLAB-TN-98-012, Thomas Jefferson National Accelerator Facility, 1998.
  24. S. Di Mitri, M. Cornacchia, and S. Spampinati, Cancellation of coherent synchrotron radiation kicks with optics balance, Phys. Rev. Lett. 110, 014801 (2013).
  25. R. Hajima, Emittance compensation in a return arc of an energy-recovery linac, Nucl. Instrum. Methods Phys. Res., Sect. A 528, 335 (2004).
  26. R. Hajima, A first-order matrix approach to the analysis of electron beam emittance growth caused by coherent synchrotron radiation, Jpn. J. Appl. Phys. 42, L974 (2003).
  27. Y. Jiao, X. Cui, X. Huang, and G. Xu, Generic conditions for suppressing the coherent synchrotron radiation induced emittance growth in a two-dipoles achromat, Phys. Rev. ST Accel. Beams 17, 060701 (2014).
  28. C. Zhang, Y. Jiao, and C. Y. Tsai, Quasi-isochronous triple-bend achromat with periodic stable optics and negligible coherent-synchrotron-radiation effects, Phys. Rev. Accel. Beams 24, 060701 (2021).
  29. X. Y. Huang, Y. Jiao, X. H. Cui, and G. Xu, Suppression of the emittance growth induced by coherent synchrotron radiation in triple-bend achromats, Chin. Phys. C 39, 057001 (2015).
  30. W. Liu, F. Zeng, and Y. Jiao, Modified coherent synchrotron radiation point-kick model with self-consistent consideration of bunch length varying, Phys. Rev. Accel. Beams 28, 024402 (2025).
  31. D. Z. Khan and T. O. Raubenheimer, Novel bunch compressor chicane: The five-bend chicane, Phys. Rev. Accel. Beams 25, 090701 (2022).
  32. A. Loulergue and A. Mosnier, A simple S-chicane for the final bunch compressor of TTF-FEL, in Proceedings of the 7th European Particle Accelerator Conference, Vienna, Austria (JACoW, Geneva, Switzerland, 2000), WEP4B01, Vol. 1–3, pp. 752–754, https://accelconf.web.cern.ch/e00/PAPERS/WEP4B01.pdf.
  33. F. Stulle, A bunch compressor for small emittances and high peak currents at the VUV free-electron laser, Technical report No. DESY-THESIS-2004-041, Deutsches Elektronen-Synchrotron (DESY), 2004.
  34. F. Stulle, A. Adelmann, and M. Pedrozzi, Designing a bunch compressor chicane for a multi-TeV linear collider, Phys. Rev. ST Accel. Beams 10, 2007
  35. R. Bartolini, C. Christou, J. H. Han, I. P. S. Martin1, J. H. Rowland, M. Venturini, D. AngalKalinin, F. Jackson, B. Muratori, and P. Williams, Optimisation of a single-pass superconducting linac as a FEL driver for the NLS project, in Proceedings of the 2009 International FEL Conference, Liverpool, UK (JACoW, Geneva, Switzerland, 2009), WEOB02, pp. 480–487, https://accelconf.web.cern.ch/FEL2009/papers/weob02.pdf.
  36. J. Marangos, R. Walker, and G. Diakun, New light source (NLS) project: Conceptual design report, Science & Technology Facilities Council, UK (2010), https://www.researchgate.net/publication/44106782_NLS_conceptual_design_report.
  37. P. Williams, D. Dunning, N. Thompson, D. Angal-Kalinin, J. Jones, R. Bartolini, I. Martin, and J. Rowland, Design of the recirculating linac option for the UK new light source, in Proceedings of the 1st International Particle Accelerator Conference Kyoto, Japan (JACoW, Geneva, Switzerland, 2010), TUPEC035, pp. 1799–1801, https://accelconf.web.cern.ch/IPAC10/papers/tupec035.pdf.
  38. S. Di Mitri and M. Cornacchia, Transverse emittance-preserving arc compressor for high-brightness electron beam-based light sources and colliders, Europhys. Lett. 109, 62002 (2015).
  39. S. Di Mitri, Feasibility study of a periodic arc compressor in the presence of coherent synchrotron radiation, Nucl. Instrum. Methods Phys. Res., Sect. A 806, 184 (2016).
  40. C. Zhang, Y. Jiao, W. Liu, and C. Y. Tsai, Suppression of the coherent synchrotron radiation induced emittance growth in a double-bend achromat with bunch compression, Phys. Rev. Accel. Beams 26, 050701 (2023).
  41. X. Huang, X. Cui, Y. Jiao, and G. Xu, Minimization of the emittance growth induced by coherent synchrotron radiation in arc compressor, in Proceedings of the 37th International Free Electron Laser Conference Geneva, Switzerland (2015), pp. 711–713.
  42. S. A. Antipov, A. F. Pousa, I. Agapov, R. Brinkmann, A. R. Maier, S. Jalas, L. Jeppe, M. Kirchen, W. P. Leemans, A. M. de la Ossa et al., Design of a prototype laser-plasma injector for an electron synchrotron, Phys. Rev. Accel. Beams 24, 111301 (2021).
  43. B. Beutner, Measurement and analysis of coherent synchrotron radiation effects at FLASH, Deutsches Elektronen-Synchrotron (DESY) Technical Report No. DESY-THESIS-2007-040, 2007, 10.3204/DESY-THESIS-2007-040.
  44. F. Zeng, Y. Jiao, W. Liu, and C.-Y. Tsai, Solvable model of the coherent synchrotron radiation effects in a four-bend chicane compressor, New J. Phys. 27, 063801 (2025).
  45. M. Venturini, Design of a triple-bend isochronous achromat with minimum coherent-synchrotron-radiation-induced emittance growth, Phys. Rev. Accel. Beams 19, 064401 (2016).
  46. J. Stohr et al., Linac coherent light source II (LCLS-II) conceptual design report, Report No. SLAC-R-978, 2011, SLAC National Accelerator Lab, Menlo Park, CA, 2011.
  47. T. Liu, N. Huang, H. Yang et al., Status and future of the soft x-ray free-electron laser beamline at the SHINE, Front. Phys. 11, 1172368 (2023).
  48. A. W. Chao, Lectures on Accelerator Physics (World Scientific, Singapore, 2020). p. 127.
  49. M. Vogt and J. Zemella, A new 2nd bunch compression chicane for the FLASH2020+ project, in Proceedings of the International Particle Accelerator Conference (IPAC’21), SP, Brazil (JACoW, Geneva, Switzerland, 2021), TUPAB102, pp. 1618–1621, 10.18429/JACoW-IPAC2021-TUPAB102.
  50. M. Borland, J. Lewellen, and S. Milton, A highly flexible bunch compressor for the APS LEUTL FEL, in Proceedings of the ILAC’00 (JACoW, Geneva, Switzerland, 2000), THC05, https://accelconf.web.cern.ch/l00/papers/THC05.pdf.
  51. M. Borland, elegant: A flexible SDDS-compliant code for accelerator simulation, Technical Report No. LS-287, Argonne National Lab, IL, 2000.
  52. M. Borland, Simple method for particle tracking with coherent synchrotron radiation, Phys. Rev. ST Accel. Beams 4, 070701 (2001).
  53. C.-Y. Tsai, S. Di Mitri, D. Douglas, R. Li, and C. Tennant, Conditions for coherent-synchrotron-radiation-induced microbunching suppression in multibend beam transport or recirculation arcs, Phys. Rev. Accel. Beams 20, 024401 (2017).
  54. C.-Y. Tsai, W. Qin, K. Fan, X. Wang, J. Wu, and G. Zhou, Theoretical formulation of phase space microbunching instability in the presence of intrabeam scattering for single-pass or recirculation accelerators, Phys. Rev. Accel. Beams 23, 2020

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Phys. Rev. Accel. Beams 28, 070701– Published 22 July, 2025
  • Received 2 July 2024
  • Revised 12 November 2024
  • Accepted 20 June 2025
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