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Accelerator Science and Technology Seminar


This event takes place in the following cycle:

Tuesdays, 14:00 - 15:00 h,  every other week
(even calendar weeks - except during the summer holidays)


Format:


Seminar Program 2022

Date Presenter Title OU
Jan. 11th 
Markus Ries "TRIBs with 1.75 GHz beating - an end game idea for BESSY II" BE-IA-SRBP (HZB)
Jan. 25th  Arnold Kruschinsky

"The SSMB Proof-of-Principle Experiment at the MLS - Status and Perspective"

BE-IAS
Feb. 8th Axel Neumann "Status of the Sealab facility at HZB, a new perspective for bERLinPro" BE-IAS
Feb. 22nd Gianluca Valentino "Machine learning for particle accelerators" University of Malta
Mar. 22nd Sonal Mistry "Multi-alkali antimonide photocathode development for high brightness beams (Status of photocathode R&D for ARD)" BE-AHBB
Apr. 5th Pierre Schnizer "Digital Shadow for BESSY II" BE-IA-SRBP
May 3rd Johan Bengtsson Smalltalk on AT BE-IA-ARD
May 17th Adam Bartnik cbeta  
May 31st  Thorsten Hellert "Commissioning Planning and Simulation PETRA IV" DESY
June 14th Walid Kaabi "Status of PERLE ERL Project" CNRS
       
       
       
       
       
       

 

Details

11.01.2022  - Markus Ries

Title:


TRIBs with 1.75 GHz beating - an end game idea for BESSY II

Abstract:

25.01.2022  - Arnold Kruschinsky

Title:

"The SSMB Proof-of-Principle Experiment at the MLS - Status and Perspective"

 

Abstract: 

The Steady-State Microbunching (SSMB) Proof-of-Principle Experiment

(PoP) at the MLS has first successfully shown coherent synchrotron radiation on the second undulator harmonic in 2019. Since then, as part of a Master's thesis, a first harmonic detection setup was commissioned and is used successfully to investigate the storage ring state necessary for coherent emission.

This talk will give an overview of the SSMB-PoP project, the current status and an outlook on future planned phases of the PoP experiment.

08.02.2022 - Axel Neumann

Title:

Status of the Sealab facility at HZB, a new perspective for bERLinPro

 

Abstract: 

Since end of the year 2020 the energy recovery project bERLinPro is officially completed. But what is the status of this facility, the next scientific goals in the framework of accelerator physics at HZB, what are the perspectives? To reflect the continuation of this endeavor and the eventually broaden application of this machine from high current SRF based energy recovery concept to an ultrafast electron diffraction facility producing shortest electron pulses, the facility is now named Sealab, Srf Electron Accelertor Laboratory. In this talk, an overview of the status of the machine, the coming set up and commissioning steps with an outlook to midterm and future applications will be given.

22.02.2022 - Gianluca Valentino

Title:

Machine learning for particle accelerators

 

Abstract: 

The last few years have seen a strong increase in uptake of machine learning (ML) techniques in the domain of particle accelerators. ML techniques have been used in a number of applications, from anomaly detection to surrogate modelling, virtual diagnostics, tuning and control as well as advanced data analysis. This talk will explore the different applications where ML is becoming an increasingly valuable tool to meet new demands for beam energy, brightness, reliability and stability, and will review several successful case studies in a number of particle accelerator facilities.

22.03.2022 - Sonal Mistry

Title:

Multi-alkali antimonide photocathode development for high brightness beams (Status of photocathode R&D for ARD)

 

Abstract: 

Photocathode R&D at the Helmholtz-Zentrum Berlin is driven by the motivation to produce high brightness electron beams for the SRF photoinjector test facility currently under construction at HZB. To deliver high quality photocathodes, the working group at HZB have developed the necessary infrastructure comprising several ultra-high vacuum systems for the production, analysis and transportation of bi-alkali antimonide photocathodes. In this talk, the following topics will be covered: a status update of the photocathode lab, lessons learned from the growth and characterization of Cs-K-Sb photocathodes, and first steps towards developing a growth procedure for Na-K-Sb photocathodes. Finally, results from collaborative work with a solid-state physics theory group aiming at an ab-initio description of the
photoemission process will be presented

05.04.2022 - Pierre Schnizer

Title:

Digital Shadow for BESSY II

 

Abstract: 

Accelerator development has been directly linked to computational tools for studying the designed machines and forecasting their performance. In early days computer modelling was disjoint from conducting on the experiments. Conversions from engineering space (e.g. power converter currents) to accelerator physics space (e.g. angles produced by correctors) was typically a semiautomatic process. Today’s available computing power – next to consistent interfaces to libraries and tools – call for a connection: i.e. a digital model of the machine that follows the current machine settings (digital shadow).

This talk will outline the proposed design and its implementation. It will show how conversion is split off from physics calculation. Finally it will describe the development of commissioning tools based on bluesky, which are developed and tested using the digital shadow and the machine.

03.05.2022 - Johan Bengtsson

Title:

"Smalltalk on AT"

 

Abstract: 
A LEGO approach for the Python interface to the Tracy-2 Hamiltonian & symplectic integrator.

17.05.2022  - Adam Bartnik

Title:

"cbeta"

 

Abstract: 

31.05.2022  - Thorsten Hellert

Title:

"Commissioning Planning and Simulation PETRA IV"

 

Abstract: 


14.06.2022  - Walid Kaabi

Title:

"Status of PERLE ERL Project "

 

Abstract: 

 

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Archive:

Archive of previous talks