ALEGRO2023 Workshop
DESY Lecture Hall
DESY
This workshop is the fourth in the ALEGRO workshop series. Previous workshops: ANAR2017 CERN, ALEGRO2018 Oxford, ALEGRO 2019 CERN
After a four-year hiatus the ALEGRO (Advanced LinEar collider study GROup) Workshop is returning. As in past iterations, the workshop will concentrate on addressing the recent progress and necessary steps towards realising a linear collider for particle physics based on novel-accelerator technology. Unique to this iteration will be two special sessions dedicated to updates on the relevant aspects of the European Strategy for Particle Physics (ESPP) Roadmap Process.
It will be held at the DESY campus from March 22 to 24, 2023.
This workshop is endorsed by the International Committee for Future Accelerators.

The registration fees per person including coffee breaks and workshop dinners are
- Standard 145 Euro
- Students/PHDs 50 Euro
Registration now open UNTIL MARCH, 10TH 2023 - PLEASE NOTE EXTENDED REGISTRATION DEADLINE!
Both registration and abstract submission will be handled via a CERN indico page. For the registration a CERN account is required.
In case you do not have a CERN account you can open one using the following link:
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08:30
Registration DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
Introduction¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 HamburgConvener: Richard D'Arcy- 1
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10:45
Coffee break DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
Mid-term particle physics application and science case (10-100 GeV): Part 1¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 HamburgConvener: Brian Foster (University of Oxford (GB))- 4
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Particle Physics Applications with AWAKE Technology¶Speaker: Allen Caldwell (Max-Planck-Institut fur Physik (DE))
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13:00
Lunch Break DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
How to build a mid-term facility (10-100 GeV): Part 1¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 HamburgFor first particle physics applications and potentially, as a basis for a future collider test facility
Convener: Jens Osterhoff -
15:30
Tea Break and Group Photo DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
How to build a mid-term facility (10-100 GeV): Part 2¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 HamburgFor first particle physics applications and potentially, as a basis for a future collider test facility
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Poster session and drinks¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
19:00
Workshop Dinner at Canteen Extension Bldg. 09a
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08:30
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ESPP Roadmap Process¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg-
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Coordination: Plasma Accelerators for Particle Physics¶Speakers: Rajeev Pattathil, Wim Leemans (DESY)
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Overall collider concepts (Higgs factory, multi-TeV)¶Speakers: Dr Carl A. Lindstrøm (DESY), Carl Schroeder, Zulfikar Najmudin (Imperial College)
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Beam-driven electron linac¶Speaker: Erik Adli (University of Oslo (NO))
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Laser-driven electron linac¶Speakers: Brigitte Cros, Jorge Viera (IST), Maxence Thevenet (Lawrence Berkeley National Laboratory)
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Positron arm / Spin and polarisation preservation / Final-focus system¶
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Discussion¶
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10:45
Coffee break DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
ESPP Roadmap Process¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg-
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High-rep.-rate plasma-accelerator module: 10 yr vision¶Speakers: Andreas Maier (Universität Hamburg), Leonida Gizzi (CNR)
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High-rep.-rate plasma targets¶Speakers: Brigitte Cros, Simon Hooker (University of Oxford)
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Facility/Delivery requirements¶Speakers: Dr Andreas Döpp (University of Munich (LMU)), Daniel Symes (STFC Rutherford Appleton Laboratory)
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High-efficiency, beam-quality-preserving electron-driven plasma module: 10 yr vision¶Speakers: Jens Osterhoff, Richard D'Arcy (DESY)
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Proton-driven experiments at AWAKE¶Speakers: Edda Gschwendtner (CERN), Patric Muggli (Max Planck Institute for Physics)
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Early particle physics experiments and test facilities¶Speakers: Brian Foster (University of Oxford (GB)), Maria Vranic, Matt Zepf (Helmholtz Institut Jena), Stuart Mangles
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Discussion - next steps¶
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13:00
Lunch Break DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
Outstanding challenges: positron acceleration in plasma, emittance preservation at a level relevant for collider applications, competitive efficiency, repetition rate/average power: Part 1¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 HamburgConvener: Mark Hogan-
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High-rep.-rate laser drivers and plasma sources¶Speaker: Dr Laura Corner (Cockcroft Institute, University of Liverpool)
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High-rep.-rate beam drivers and plasma sources¶Speaker: Richard D'Arcy (DESY)
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Competitive efficiency: what’s achieved and what’s required (LWFA & PWFA)¶Speaker: Erik Adli (University of Oslo (NO))
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‘Efficiency vs. Stability’ in novel and conventional accelerators¶Speaker: Sergey Antipov
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16:00
Tea Break DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
Outstanding challenges: positron acceleration in plasma, emittance preservation at a level relevant for collider applications, competitive efficiency, repetition rate/average power: Part 2¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 HamburgConvener: Mark Hogan-
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Positron acceleration: a systematic overview¶Speaker: Mr Severin Diederichs (DESY)
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Hybrid Asymmetric Linear Higgs Factory (HALHF)¶Speaker: Brian Foster (University of Oxford (GB))
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Emittance preservation and required tolerances¶Speaker: Maxence Thevenet (Lawrence Berkeley National Laboratory)
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18:30
Workshop Dinner and Reception at Canteen Extension Bldg. 09a
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Study: what aspects of a HeP collider do all the non-directly related ANAS or ANAs experiments contribute to?¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 HamburgConvener: Brigitte Cros-
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Laser drivers for plasma accelerators¶
State-of-the-art and its relevance to collider development,
Speaker: Leonida Gizzi (CNR) -
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Simulation tools and performance for accelerator modeling¶
State-of-the-art and its relevance to collider development, including discussion
Speaker: Jorge Viera (IST)
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10:45
Coffee break DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
Getting organized: global design, pre-CDR/feasibility¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg -
Closing¶ DESY Lecture Hall
DESY Lecture Hall
DESY
DESY Lecture Hall c/o Deutsches Elektronen-Synchrotron DESY Notkestraße 85, Building 05 D-22607 Hamburg
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