6th Slow Extraction Workshop (SX 2025)
from
Monday 6 October 2025 (08:00)
to
Thursday 9 October 2025 (17:00)
Monday 6 October 2025
08:00
Breakfast
Breakfast
08:00 - 09:00
Room: Theater Gallery
09:00
Welcome and Workshop Introduction: Wolfram Fischer & Kevin Brown
Welcome and Workshop Introduction: Wolfram Fischer & Kevin Brown
09:00 - 09:30
Room: Lecture Hall 1
09:30
Status of the SX commissioning for the Mu2e experiment
-
Vladimir Nagaslaev
(
Fermilab
)
Status of the SX commissioning for the Mu2e experiment
Vladimir Nagaslaev
(
Fermilab
)
09:30 - 10:00
Room: Lecture Hall 1
10:00
Posters Setup
Posters Setup
10:00 - 10:30
Room: Theater Gallery
10:30
HEARTS@LEIR for R2E testing at CERN
-
Cristopher Cortes
(
CERN
)
HEARTS@LEIR for R2E testing at CERN
Cristopher Cortes
(
CERN
)
10:30 - 11:00
Room: Lecture Hall 1
11:00
Slow extraction of mixed ion beams
-
Elisabeth Renner
(
TU Wien
)
David Ondreka
(
GSI Helmholtzzentrum für Schwerionenforschung
)
Slow extraction of mixed ion beams
Elisabeth Renner
(
TU Wien
)
David Ondreka
(
GSI Helmholtzzentrum für Schwerionenforschung
)
11:00 - 11:30
Room: Lecture Hall 1
11:30
Less ripple - higher intensity: What is the "ideal" intensity in SX for raster-scanning at HIT?
-
Christian Schömers
(
HIT
)
Less ripple - higher intensity: What is the "ideal" intensity in SX for raster-scanning at HIT?
Christian Schömers
(
HIT
)
11:30 - 12:00
Room: Lecture Hall 1
12:00
No Host Lunch
No Host Lunch
12:00 - 13:00
13:00
Slow extraction simulations with SciBmad
-
Eiad Hamwi
(
Cornell University
)
Slow extraction simulations with SciBmad
Eiad Hamwi
(
Cornell University
)
13:00 - 13:30
Room: Lecture Hall 1
13:30
Simulating the space radiation environment with accelerators
-
Kevin Brown
(
C-AD
)
Simulating the space radiation environment with accelerators
Kevin Brown
(
C-AD
)
13:30 - 14:00
Room: Lecture Hall 1
14:00
Stable islands and bent crystals for slow extraction
-
Massimo Giovannozzi
(
CERN
)
Stable islands and bent crystals for slow extraction
Massimo Giovannozzi
(
CERN
)
14:00 - 14:30
Room: Lecture Hall 1
14:30
Discussion
Discussion
14:30 - 15:00
Room: Lecture Hall 1
15:00
Posters with Coffee
Posters with Coffee
15:00 - 15:30
Room: Theater Gallery
15:30
Octupole assited slow extraction from SPS to the North Area at CERN
-
Aleksandr Gorn
(
CERN
)
Octupole assited slow extraction from SPS to the North Area at CERN
Aleksandr Gorn
(
CERN
)
15:30 - 16:00
Room: Lecture Hall 1
16:00
Crystals and beam diffusers for higher extraction efficiency at J-PARC
-
Ryotaro Muto
(
KEK
)
Crystals and beam diffusers for higher extraction efficiency at J-PARC
Ryotaro Muto
(
KEK
)
16:00 - 16:30
Room: Lecture Hall 1
16:30
Development of SX schemes for SIS100 in the presence of higher-order field errors
-
David Ondreka
(
GSI Helmholtzzentrum für Schwerionenforschung
)
Development of SX schemes for SIS100 in the presence of higher-order field errors
David Ondreka
(
GSI Helmholtzzentrum für Schwerionenforschung
)
16:30 - 17:00
Room: Lecture Hall 1
17:00
SPS Crystal shadowing advancment and operational deployment
-
Francesco Maria Velotti
(
CERN
)
SPS Crystal shadowing advancment and operational deployment
Francesco Maria Velotti
(
CERN
)
17:00 - 17:30
Room: Lecture Hall 1
Tuesday 7 October 2025
09:00
Studies on collective phenomena related to slow beam extraction
-
Masahito Tomizawa
(
J-PARC
)
Studies on collective phenomena related to slow beam extraction
Masahito Tomizawa
(
J-PARC
)
09:00 - 09:30
Room: Lecture Hall 1
09:30
Design of a resonant slow extraction from low-emittance electron booster rings using transverse resonance island buckets
-
Cristopher Cortes
(
CERN
)
Design of a resonant slow extraction from low-emittance electron booster rings using transverse resonance island buckets
Cristopher Cortes
(
CERN
)
09:30 - 10:00
Room: Lecture Hall 1
10:00
Posters with Coffee
Posters with Coffee
10:00 - 11:00
Room: Theater Gallery
11:00
Investigations into multi energy extraction at MedAustron
-
Katrin Holzfeind
Investigations into multi energy extraction at MedAustron
Katrin Holzfeind
11:00 - 11:30
Room: Lecture Hall 1
MedAustron, located in Wiener Neustadt, Austria, is a synchrotron facility used for medical treatment and research. To decrease downtime and increase the efficiency of the machine, multi energy extraction (MEE) techniques are explored. An alternative extraction method to the present betatron core driven extraction is radio frequency knock out (RFKO). This method allows for extracting bunched beams, thus enabling re-acceleration or deceleration without recapturing the particles after partial extraction. This contribution presents MEE studies using the RFKO extraction method through measurements and simulations with Xsuite, exploring energy changes in both upwards and downwards mode. Of particular interest are the effects of the energy change on the longitudinal phase space distribution and the resulting spill behavior. The influence of main dipole ramp rates and RF parameters, such as voltage, on the longitudinal phase space distribution is characterized through longitudinal tomography.
11:30
Status of RF knock-out extraction development at MedAustron
-
Fabien Plassard
(
MedAustron
)
Status of RF knock-out extraction development at MedAustron
Fabien Plassard
(
MedAustron
)
11:30 - 12:00
Room: Lecture Hall 1
12:00
No Host Lunch
No Host Lunch
12:00 - 13:00
13:00
Crystal production at CERN
-
Luigi Esposito
(
CERN
)
Crystal production at CERN
Luigi Esposito
(
CERN
)
13:00 - 13:30
Room: Lecture Hall 1
13:30
R&D on low-Z electrostatic septa at CERN
-
Friedrich Lackner
(
CERN
)
R&D on low-Z electrostatic septa at CERN
Friedrich Lackner
(
CERN
)
13:30 - 14:00
Room: Lecture Hall 1
14:00
Realization of extreme sensitive power-supplier AC ripple measurements
-
Frank Stulle
(
Bergoz
)
Realization of extreme sensitive power-supplier AC ripple measurements
Frank Stulle
(
Bergoz
)
14:00 - 14:30
Room: Lecture Hall 1
14:30
Discussion
Discussion
14:30 - 15:00
Room: Lecture Hall 1
15:00
Posters with Coffee
Posters with Coffee
15:00 - 15:30
Room: Theater Gallery
15:30
Crystal extraction studies at SPS
-
Yann Dutheil
(
BNL
)
Crystal extraction studies at SPS
Yann Dutheil
(
BNL
)
15:30 - 16:00
Room: Lecture Hall 1
16:00
RF techniques for spill quality control at CERN
-
Pablo Arrutia
(
CERN
)
RF techniques for spill quality control at CERN
Pablo Arrutia
(
CERN
)
16:00 - 16:30
Room: Lecture Hall 1
17:30
No Host Dinner
No Host Dinner
17:30 - 20:00
Wednesday 8 October 2025
09:00
Studies of bunched beam extraction with high harmonics h=90 at SIS18
-
Peter Forck
(
Beam Instrumentation and advanced operation
)
Studies of bunched beam extraction with high harmonics h=90 at SIS18
Peter Forck
(
Beam Instrumentation and advanced operation
)
09:00 - 09:30
Room: Lecture Hall 1
09:30
Tailored multi-band excitation to minimize fluctuations for knock-out extraction
-
Philipp Niedermayer
(
GSI
)
Tailored multi-band excitation to minimize fluctuations for knock-out extraction
Philipp Niedermayer
(
GSI
)
09:30 - 10:00
Room: Lecture Hall 1
10:00
Posters with Coffee
Posters with Coffee
10:00 - 11:00
Room: Theater Gallery
11:00
Studies on spill quality improvement at J-PARC
-
Ryotaro Muto
(
KEK
)
Studies on spill quality improvement at J-PARC
Ryotaro Muto
(
KEK
)
11:00 - 11:30
Room: Lecture Hall 1
11:30
Spill feedback and optimisation system for RFKO and tune scan extraction
-
Philipp Niedermeyer
Spill feedback and optimisation system for RFKO and tune scan extraction
Philipp Niedermeyer
11:30 - 12:00
Room: Lecture Hall 1
12:00
No Host Lunch
No Host Lunch
12:00 - 13:00
Room: On your own
13:00
Extraction bump digital twin for NSRL slow extraction
-
Lucy Lin
(
Brookhaven National Laboratory
)
Extraction bump digital twin for NSRL slow extraction
Lucy Lin
(
Brookhaven National Laboratory
)
13:00 - 13:30
Room: Lecture Hall 1
13:30
Crystal design based on multi-fidelity surrogate models
-
Francesco Maria Velotti
(
CERN
)
Crystal design based on multi-fidelity surrogate models
Francesco Maria Velotti
(
CERN
)
13:30 - 14:00
Room: Lecture Hall 1
14:00
Operational results with new high frequency spill monitor and prospects
-
Federico Roncarolo
Operational results with new high frequency spill monitor and prospects
Federico Roncarolo
14:00 - 14:30
Room: Lecture Hall 1
14:30
Discussion
Discussion
14:30 - 15:00
Room: Lecture Hall 1
15:00
Posters with Coffee
Posters with Coffee
15:00 - 15:30
Room: Theater Gallery
15:30
Precise evaluation of time-varying quadrupole field errors in the J-PARC Main Ring
-
Takashi Asami
(
KEK
)
Precise evaluation of time-varying quadrupole field errors in the J-PARC Main Ring
Takashi Asami
(
KEK
)
15:30 - 16:00
Room: Lecture Hall 1
16:00
Development of the bent crystals for Slow Extraction
-
Vincenzo Guidi
(
University of Ferrara
)
Development of the bent crystals for Slow Extraction
Vincenzo Guidi
(
University of Ferrara
)
16:00 - 16:30
Room: Lecture Hall 1
16:30
Poincare-friendly tracking with tune modulation
-
Stephen Peggs
(
BNL
)
Poincare-friendly tracking with tune modulation
Stephen Peggs
(
BNL
)
16:30 - 17:00
Room: Lecture Hall 1
Thursday 9 October 2025
08:30
Session 1 and 2 Summary
-
Masahito Tomizawa
(
J-PARC
)
Lucy Lin
(
Brookhaven National Laboratory
)
Vladimir Nagaslaev
(
Fermilab
)
Christian Schömers
(
HIT
)
Francesco Maria Velotti
(
CERN
)
Eiad Hamwi
(
Cornell University
)
Kevin Brown
(
C-AD
)
Yann Dutheil
(
BNL
)
Session 1 and 2 Summary
Masahito Tomizawa
(
J-PARC
)
Lucy Lin
(
Brookhaven National Laboratory
)
Vladimir Nagaslaev
(
Fermilab
)
Christian Schömers
(
HIT
)
Francesco Maria Velotti
(
CERN
)
Eiad Hamwi
(
Cornell University
)
Kevin Brown
(
C-AD
)
Yann Dutheil
(
BNL
)
08:30 - 09:00
Room: Meeting Room 201
Summary: Facilities and Applications & New Methods Higher Methods for Higher Efficiency
Summary: Facilities and Applications & New Methods Higher Methods for Higher Efficiency
08:30 - 09:00
Room: Meeting Room 201
09:00
Session 3 and 4 summary
-
Pablo Arrutia
(
CERN
)
Alessio Mereghetti
David Ondreka
(
GSI Helmholtzzentrum für Schwerionenforschung
)
Elisabeth Renner
(
TU Wien
)
Kiel Hock
(
Brookhaven National Laboratory
)
Matthew Fraser
(
CERN
)
Session 3 and 4 summary
Pablo Arrutia
(
CERN
)
Alessio Mereghetti
David Ondreka
(
GSI Helmholtzzentrum für Schwerionenforschung
)
Elisabeth Renner
(
TU Wien
)
Kiel Hock
(
Brookhaven National Laboratory
)
Matthew Fraser
(
CERN
)
09:00 - 09:30
Room: Meeting Room 201
Summary: Slow Extraction Hardware and Machine Protection & Spill Ripples & Beam Quality
Summary: Slow Extraction Hardware and Machine Protection & Spill Ripples & Beam Quality
09:00 - 09:30
Room: Meeting Room 201
09:30
Session 5 and 6 summary
-
Peter Forck
(
Beam Instrumentation and advanced operation
)
Ryotaro Muto
(
KEK
)
Cristopher Cortes
(
CERN
)
Aakaash Narayanan
(
aakaashn@fnal.gov
)
Session 5 and 6 summary
Peter Forck
(
Beam Instrumentation and advanced operation
)
Ryotaro Muto
(
KEK
)
Cristopher Cortes
(
CERN
)
Aakaash Narayanan
(
aakaashn@fnal.gov
)
09:30 - 10:00
Room: Meeting Room 201
Summary: Optimisation and Machine Learning for Slow Extraction & Advances in Instrumentation
Summary: Optimisation and Machine Learning for Slow Extraction & Advances in Instrumentation
09:30 - 10:00
Room: Meeting Room 201
10:00
Next Workshop Presentation
Next Workshop Presentation
10:00 - 10:30
Room: Meeting Room 201
SX2027_Announcement
-
Matthew Fraser
(
CERN
)
SX2027_Announcement
Matthew Fraser
(
CERN
)
10:00 - 10:30
Room: Meeting Room 201
10:30
Close-out
Close-out
10:30 - 11:00
Room: Meeting Room 201
11:00
No Host Lunch
No Host Lunch
11:00 - 12:30
Room: On your own
12:30
Tour at BNL
Tour at BNL
12:30 - 17:00