Eurizon meeting Topics 1,2,3



EURIZON Task 4.1 Status:

M4.1.1 (M30 July 2022, DESY) Identify common beam physics interests, define necessary software developments
M4.1.2 (M30 July 2022, DESY) Definition of the work organisation for beam dynamics studies
M4.1.3 (M32 September 2022, ESRF) Define work organisation and contributors to the tasks identified in M4.1.1

M4.1.6 (M42 July 2023, ESRF) Assess feasibility of experimental validation on EBS or PETRA III.

To do:

M4.1.4 (M36 Jan 2023, DESY) Beam Diagnostics: Definition of the work organization for beam diagnostics studies

M4.1.5 (M42 Jul 2023, ESRF) Beam Diagnostics: Selection of the shaker device

D4.1.1 (M38 March 2023, ESRF) Preliminary technical report with proof of principle validation on simplified test cases

D4.1.2 (M48, January 2024, DESY) Final technical report with detailed beam dynamics studies and documentation for EBS and/or PETRA IV

D4.1.3 (M48, Januray 2024 DESY) Technical report on beam diagnostics studies with detailed documentation.


Extract from Kaja Scheliga message:

Submitted a revised amendment request on 23.09.2022. We are in close exchange with our Policy Officer and are expecting final feedback on the current amendment very soon. We thank you again for your cooperation, all your contributions, and patience in this very complex and difficult process!



Ilya Agapov
Nicola Carmignani
Lee Carver
Thorsten Hellert
Lina Hoummi
Joachim Keil
Simone Maria Liuzzo
Luckas Malina
Elaf Musa
Thomas Perron
Bianca Veglia
Simon White



notes meeting 1st December 2022

Eurizon Task 4.1


SL Simone Liuzzo  YES
LH Lina Hoummi YES
SW Simon White YES
LC Lee Carver YES
NC Nicola Carmignani YES
IA Ilya Agapov NO
JK Joachim Keil YES
TH Thorsten Hellert YES
BV Bianca Veglia YES
LM Lukas Malina YES
EM Elaf Musa

For diag meetings:
HS Holger Schlarb  NO
GK Gero Kube   NO
SJ Szymon Jablonski  NO
SP Sven Pfeiffer   NO
SM Sajjad Mirza  NO
KS Kees Scheidt NO
BR Benoit Roche  NO
EB Elena Buratin NO
FE Friederike Ewald NO


Eurizon update: no update.

BV presentation on ES MDT
Hyperparameters of ES have a large impact on the minimization process.
Test on EBS operation lattice model, adjusting the hyperparmeters. NOT possible to know hyper parameters analytically.
800 iterations in simulations, not relistic in CTRM.
MDT tested several hyperparameters.

LM how much time takes a single step: 5seconds.
LC is there anyway to tell the optimizer that it is diverging?
BV, SL we would prefer not to modify ES

NC if you stop when some reduction, local minima can not be avoided. To scan the space of parameters it is normal to go back up and then look again.

LC may be it simply needs a long time.

BV and NC, many steps to find the optimum.

NC try to use few knobs (fmailies for example) and see if it find a better optimum compared to the one-by-one the knobs. Try few knobs and give more times, scanning the parameters. 4-6 knobs may be feasible in a few hours.

BV for the future.

LH could add variation of hyperparameters to speed up the simulation. Immagine J reduces then k would have to be increased. For example in simulations there are some long plateau.

BV will try in simulations

future MDT for this topic

JK presentation on cross talks  for PETRA IV
4% less correction kick due to correctors on.
quadrupole field reduced due to fully powered corrector.
fast corrector has some sextupole and octupole componenet.

SL: infact DLQ-Quad 47 mm correction in DLQ by JChavanne
SL: cross talks with correctors not taken in account in EBS, assume zero and then corrections iterations for optics modifications if any.

SL will share initial Deliverable document in google docs. please keep very short in text.

NC will write an abstract for IPAC

LM will upload data to CLOUD?
NC some data is doubled so only one set loaded

NC no update on data analysis. some simulations using similar data as we add in the MDT and repeat the analysis by the OCM3 code.  

IPAC papers:

Bianca will send an abstract for ES

Nicola will send an abstract for TbT optics

next MDTs?
no planning yet.

next Meeting?
in january, Simone will propose a few dates

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