10th Low Emittance Rings Workshop 2025

8 Oct 2025, 09:00 → 10 Oct 2025, 18:15 Europe/Berlin

The 10th Low Emittance Rings Workshop 2025, supported by the I.FAST EU project Work Package 7 on High brightness accelerators for light sources, will be held at DESY, Hamburg (Germany) on 8-10 of October 2025. The goal of the workshop is to bring together experts from the scientific communities working on low emittance lepton rings, including light source storage rings, damping rings and e+/e- circular colliders.

 

The workshop will feature sessions on:

• Lesson learned from the recent commissioning of 4-th generation light sources
• Upcoming and new projects including trends for 5-th generation light sources
• R&D on technical subsystems
• injector options
• Machine learnign tools for rings desing and operation

 

The programme will be organised by the Sceinitfic Programme Committe:

• Masamitsu Aiba, PSI
• Riccardo Bartolini, DESY
• Yi Jiao, HEPS
• Akira Mochihashi, KIT
• Yannis Papaphilippou, CERN
• Vadim Sajaev, APS
• Simon White, ESRF

 

Proposals for contributions to the workshop can be addressed to any member of the scientific programme committee or directly to the local workshop organisers

• Ilya Agapov, Riccardo Bartolini, Stephan Klumpp, @desy.de 

 

 

Interactive map of DESY campus

Wednesday 8 October

09:00 → 12:50 Session 1:

09:00 Lessons learnt in the commissioning of SLS-II

Speaker: Masamitsu Aiba

09:30 Lessons learnt in the commissioning of HEPS

Speaker: Zhe Duan (HEPS)

10:00 Lessons learnt in the commissioning of APS-U

Speaker: Vadim Sajaev (APS)

10:30 coffee break

10:50 SuperKEKB: Status report

Speaker: Yukiyoshi Ohnishi (KEK)

11:20 Nano Terasu Facility: Status report

Speaker: Nobuyuki Nishimori (National Institutes for Quantum Science and Technology)

11:50 Lesson learnt in the planning and execution of the SLS-II upgrade project

Speaker: Hans Braun (PSI)

12:20 Status and execution of the Diamond II upgrade project

Speaker: Richard Walker (Diamond Light Source Ltd.)

12:50 → 14:00 Break 1:

14:00 → 17:55 Session 2:

14:00 Status and execution of the ELETTRA 2.0 upgrade project

Speaker: Emanuel Karantzoulis (ELETTRA Sincrotrone Trieste)

14:30 Status and future plans of the Korea-4GSR project

Speaker: Younguk Sohn (Korea 4GSR)

15:00 MAXIV light source upgrade

Speaker: Magnus Sjostrom

15:30 coffee break

15:50 ALBA-II lattice progress

Speaker: G. Benedetti (ALBA)

16:15 Low-emittance lattice for the PEP-II tunnel

Speaker: Donish Khan

16:40 Challenges for the FCCee

Speaker: Christian Carli (CERN)

17:05 Status of the SOLEIL II upgrade programme

Speaker: Vadim GUBAIDULIN (Synchrotron SOLEIL)

17:30 BESSY III – lattice progress

Speaker: Paul Golawski

Thursday 9 October

09:00 → 12:50 Session 3:

09:00 Complex bend optics at NSLS-II

Speaker: Timur Shaftan (BNL)

09:30 Lattice design towards 1 pm emittance

Speaker: Yu Zhao (HEPS)

10:00 intensity limits with space charge and round beams

Speaker: Sergey Antipov (MPY (Beschleunigerphysik))

10:30 coffee break

10:50 Longitudinal injection for SAPS low-emittance storage ring

Speaker: Weihang Liu (IHEP)

11:20 Development and Comparison of numerical optimization strategies for optics matching

Speaker: Bernardo Abreu (CERN)

11:50 RF-Track modeling of FCC-ee injector linacs and optimization of linac to ring transmission

Speaker: A. Latina

12:20 Beam loss management for Diamond II

Speaker: I. Martin (DLS)

12:50 → 14:00 Break 2:

14:00 → 17:40 Session 4:

14:00 HTS based undulators

Speaker: Lorenzo Bortot (ESRF)

14:30 Variable bending magnet with gradient for ELETTRA

Speaker: Yannis Papaphilippou (CERN)

14:55 Non-linear kickers design and characterization

Speaker: Antoine Sauret (ESRF)

15:25 coffee break

15:45 The magnetic measurement programme at Diamond II

Speaker: Alfie Shahveh (Diamond)

16:15 Lessons learnt from the SLSII magnet programme

Speaker: Giuseppe Montenero (PSI)

16:45 Lessons learnt from the APS-U magnet programme

Speaker: Mark Jaski (APS)

17:15 WAKIS: An Open-Source Electromagnetic Solver for Beam-Coupling Impedance Calculations

Speaker: Elena Garcia (CERN)

Friday 10 October

09:00 → 12:50 Session 5:

09:00 Preliminary studies for a 6GeV injector Linac at ESRF

Speaker: Simone Maria Liuzzo (ESRF)

09:30 The 6 GeV LPA injector for PETRA IV

Speaker: Paul Viktor Winkler (MPL (Plasmabeschleuniger und Laser))

10:00 APS-U progress towards high signle-bunch charge operation

Speaker: Joe Calvey (ANL-APS)

10:30 coffee break

10:50 Methods for full coupling operation in a synchrotron light source

Speaker: Michele Carla (ALBA)

11:20 Chromaticity and wakefield "sharing" on coupling resonance

Speaker: R. Lindbergh (ANL-APS)

11:50 Proposal of An X-ray Free-Electron Laser Oscillator based on Diffraction Limited Storage Ring

Speaker: Weilun Qin (IHEP)

12:20 Modeling and benchmarking on Intra-beam Scattering in RF-Track

Speaker: Paula Desire (CERN)

12:50 → 14:00 Break 3:

14:00 → 17:15 Session 6:

14:00 Optics reconstruction using deep Lie map networks

Speaker: Conrad Caliari (CERN)

14:30 BBA studies for FCC-ee

Speaker: Christian Goffing

15:00 Improving optics control in the LHC with forced RDTs

Speaker: Sasha Jade Horney (CERN)

15:30 coffee break

15:50 Xsuite developments for high brightness rings (optics, tracking, collective effects, beam-matter)

Speaker: Szymon Lopaciuk (CERN)

16:15 Modeling of insertion devices for Xsuite

Speaker: Simon Buijsman (CERN)

16:40 Metamaterials for beam-coupling Impedance mitigation at CERN

Speaker: Leonardo Sito

17:05 Conclusions

Speaker: Riccardo Bartolini (MP4 (Maschine PETRA IV))