MADMAX/RADES Collaboration Meeting - October 2025

from Sunday, 19 October 2025 (15:00) to Wednesday, 22 October 2025 (15:30)
Ringberg Castle

        : Sessions
    /     : Talks
        : Breaks
19 Oct 2025
20 Oct 2025
21 Oct 2025
22 Oct 2025
AM
08:00 --- Breakfast ---
09:00
MADMAX & RADES Common Session - Erika Garutti (Hamburg University (DE)) (until 10:30)
09:00 RADES Q-factor and bead pull measurements - Jose Maria Garcia Barcelo (Max Planck Institut für Physik)  
09:20 How to obtain MADMAX boost factor and determining the expected signal strength? - Anton Evgeniev Ivanov (Max Planck Society (DE))  
09:40 Determination of boost factor uncertainties via simulations - David Leppla-Weber (Hamburg University (DE))  
10:00 Common discussion  
10:30 --- Coffee break ---
11:00
MADMAX & RADES Common Session - Axel Lindner (Deutsches Elektronen-Synchrotron (DE)) (until 12:30)
11:00 MADMAX magnet: short and mid & long term perspectives - Bela Alexander Majorovits (Max Planck Society (DE))  
11:20 BabyIAXO magnet status - Igor Garcia Irastorza (Centro de Astropartículas y Física de Altas Energías (CAPA) / Universidad de Zaragoza (ES))  
11:40 CERN activities - Sergio Calatroni (CERN) Pascal Pralavorio (CPPM, Aix-Marseille Université, CNRS/IN2P3 (FR))  
12:00 Discussion  
08:00 --- Breakfast ---
09:00
MADMAX OPEN session - Christoph Krieger (Hamburg University (DE)) (until 10:30)
09:00 RFI filtering of DC lines - HeeSu Byun (MPP)  
09:20 OB300 structure readiness report - Erika Garutti (Hamburg University (DE))  
09:40 Status of the positioning mechanics (motors, interferometers) - Dominik Bergerman (RWTH)  
10:00 Horn antenna setup mechanics - Georg Obermüller (MPP)  
09:00
RADES Open session (until 10:30)
09:00 Update on DQLF and DQHF cavities design - Jose Ramón Navarro Madrid (Universidad Politécnica de Cartagena) Prof. Alejandro Díaz-Morcillo (Universidad Politécnica de Cartagena)  
09:20 Progress on HTS coatings of cavities and characterization - Dr Guilherme Telles  
09:40 MPP cylindrical cavity characterization and its employment in haloscope setups - Jose Maria Garcia Barcelo (Max Planck Institut für Physik)  
10:00 Towards a scanning mass haloscope with magnetic tunability - Jeanne Bally  
10:30 --- Coffee break ---
11:00
Analysis - Laura Segui (CAPA, Universidad de Zaragoza) (until 12:30)
11:00 RADES analysis procedure - Cristian Cogollos Trivino (Max Planck Institute for Physics (DE))  
11:20 MADMAX analysis procedure - Haotian Wang (RWTH)  
11:40 Guided discussion on differences and common approach - Allen Caldwell (Max-Planck-Institut fur Physik (DE))  
08:00 --- Breakfast ---
09:00
RADES Open session (until 10:30)
09:00 Optimal control for qubit-based photon detection and parity measurements - Marko Kuzmanović (Aalto University)  
09:20 Time-domain non-linear quantum interferometry as a resources for haloscopes - Chloé FRUY Takis Kontos  
09:40 Transmon fabrication plans at HLL - Tobias Ortmann (Max-Planck-Institut für Physik) Tobias Ortmann (Max-Planck-Institut für Physik)  
10:00 Roundtable of pending topics - Babette Dobrich (Max Planck Society (DE))  
10:30 --- Coffee break ---
11:00
Common discussion and Close Out - Pascal Pralavorio (CPPM, Aix-Marseille Université, CNRS/IN2P3 (FR)) (until 12:00)
11:00 Outreach activities and future plans - Axel Lindner (Deutsches Elektronen-Synchrotron (DE))  
11:20 Artist overview of the meeting - Olivier Rossel  
11:40 General discussions  
PM
15:30 Bus transfer  
17:15
MADMAX & RADES Common Session (until 18:15)
17:15 Axion experiments, the landscape  
17:50 Discussion  
18:30 --- Dinner ---
19:30
MADMAX & RADES: scientific introduction & welcome - Frank Daniel Steffen (Max-Planck-Institute of Physics) (until 21:00)
19:30 Welcome - Bela Alexander Majorovits (Max Planck Society (DE)) Babette Dobrich (Max Planck Society (DE))  
19:40 Why do we need the axion? - Georgi Dvali  
20:20 MADMAX Introduction - Bela Alexander Majorovits (Max Planck Society (DE))  
20:40 RADES Introduction - Babette Dobrich (Max Planck Society (DE))  
12:30 --- LUNCH ---
14:00
RADES Open session (until 15:30)
14:00 HFGW detection and analysis - Kristof Schmieden (University of Bonn (DE))  
14:20 Haloscope signal injection - Ziheng Yang  
14:35 Status of activities at Unizar - Yikun Gu (Universidad de Zaragoza (ES))  
14:55 Development of a single-photon detector for the DQHF project - Danilo Angelone  
15:15 Ideas for an acquisition system for RADES LF - Egge  
15:30 --- Coffee break ---
16:00
MADMAX & RADES Common Session - Igor Garcia Irastorza (Centro de Astropartículas y Física de Altas Energías (CAPA) / Universidad de Zaragoza (ES)) (until 17:30)
16:00 TWPAs for axion research - Guilliam Butseraen (Silent Waves)  
16:20 MADMAX TWPA integration - HeeSu Byun (MPP)  
16:40 Graphene single photon detectors for axion research - KC Fong (Northeastern University)  
17:00 Single photon detectors - David Diez Ibanez (Universidad de Zaragoza (ES))  
17:30 --- Castle tour ---
18:30 --- Dinner ---
19:30 Axion detectors: Science team building - Babette Dobrich (Max Planck Society (DE)) Cristian Cogollos Trivino (Max Planck Institute for Physics (DE))  
19:30 MADMAX Collaboration board - Library  
12:30 --- LUNCH ---
14:00
RF Data taking - TERESA Puig Molina (until 15:30)
14:00 TRL calibration for MADMAX - Juan Pablo Arcila Maldonado (Max Planck Institute for Physics) Juan PA Maldonado (Max Planck Institute for Physics, Germany)  
14:20 DAQ system and power calibration for MADMAX - Alan Aliyali (UHH) Xiang Liu  
14:50 First double cavity tests at IFAE - Pol Forn-Díaz  
15:10 General Discussion  
15:30 --- Coffee break ---
16:00
MADMAX OPEN session - Egge (until 17:30)
16:00 Comparison bead pull vs. gradient method - Max Zimmermann (RWTH)  
16:20 OB300 bead pull measuremets - Lea Stankewitz (UHH)  
16:35 CB200 10 disk configuration: status and plans - Anton Evgeniev Ivanov (Max Planck Society (DE))  
17:30
Breakout session - Lecture hall (until 18:30)
17:30
MADMAX & RADES Common collaboration board meeting - green seminar room (until 18:30)
18:30 --- Dinner ---
19:55
Axion theory session - Bela Alexander Majorovits (Max Planck Society (DE)) (until 21:30)
20:00 Decay of topological defects and axion miniclusters - Javier Redondo (Universidad de Zaragoza)  
20:30 Supernova limits - Benjamin Ryan Safdi (University of California Berkeley (US))  
21:00 Alpha status - Alexander Millar (Stockholm University)  
12:00 --- LUNCH ---
13:00
MADMAX & RADES Common Session (until 14:00)
13:00 Summary of inside axion synergetic values - Bela Alexander Majorovits (Max Planck Society (DE))  
13:20 DFSZ/KFSZ theory guidelines - Frank Daniel Steffen (Max-Planck-Institute of Physics)  
13:40 Discussion  
14:00 Bus transfer