Eurizon Task 4.1 general update



31st March 2023: ammendment approved

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

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

To do:

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

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.


13th april 2023

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 YES
JK Joachim Keil YES
TH Thorsten Hellert YES
BV Bianca Veglia YES
LM Lukas Malina YES
EM Elaf Musa YES

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

JK thin lens model of cross talks of PETRAIV up to 20% betabeating, with optics matching restored. quadrupole gradient in dipole may not change anymore. 1-2% for gradient errors, randomly chosen systematic for each cell.

BV report on badger optimizations at PETRA-III
optimize (minimize) lifetimem using diffrernt groups of skew quadrupoles. used byesian optimization. also tested simplex algorithm.
better comparison to be planned among the algorithms
presentation of report.

slide 5 tau/current not *current

S.L. presentation on badger @ESRF
N.C. suggest to use more measurement average (4 averages instead of 2 for example)

plan of next MDTs
26 april
4th june

MDT in petraIII for TbT optics measurement. LM. preparation ongoing, will have 7.5h available. Target: correct optics based on TbT data.
I.A. measure and cross check with standard correction.
J.K. could run a short RM in 30min.
L.M. ok, if short.
L.M. in between BPM used for phase advance no optics error. code being updated to consider systematic optics distortions. errors are expected from the region outside the  
S.W. suggest to use phase advance. model dependence only due to location of AC dipole
L.M. there is also an assumption of Transfer Matrix between BPMs.
S.W. phase relates directly to optics. Could directly correct phase rather than beta correction. discarding additional systematic error to go from phase to beta.
L.M. agrees to use phase as observable.

(look at dispersion, optics, emittances, I.E. L.T. for optics comparison)

N.C. no major prgress on simulations

L.M. status of pySC shows presentation
repository made public.
latest updates: automated documentation using sphinx. doc just needs to be written.
can be installed with pip
debug and basic tests set up
doc to be written
code climate set up

SL started to convert SClatticePlot

LM pySC threading working on basic example

IA parallelization of DA and lifetime?
SW DA and lifetime are parallelized on single machine. no mpi yet.

IA is this code available and documented in pyAT
SW yes. use_mp flag

IA what kind of grids are availalbe?
SW grid, radial, recursive. recursive is less parallelized, only directions.
IA same for MA?
SW yes, lifetime as well, parallelized on locations.
IA how much speed-up?
SW linear for tracking.

IA Can pyAT file be saved in readable format, like madx?
SL/SW there is a conversion to text in matlab. may be also in pyAT.

ipac paper
SL commissioning simulations
BV will circulate paper soon

AT workshop

FLS 28Aug 2Sep

I.A. long FLS+AT workshop will be difficult

N.C. US people will not come for just 2 days workshop

contact Xiaobiao, boaz, Thorsten to ask for their favourite date

next meeting 15-16th may







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