Advanced Photon Source

An Office of Science National User Facility

ASD Seminar Series

The goal of this seminar is to encourage interaction between groups, act as an open forum to share ideas, achievements, and results, promote collaboration, communicate what APS personnel are doing and to educate people. Talks can be projects, tasks, ideas, etc. that are new, unfinished, ongoing as well as fully developed. This seminar is very informal and does not require a fully formatted presentation.

To suggest a speaker or to volunteer, please contact Geoff Waldschmidt

Next Seminar:  Wednesday, October 17, 2018  @ 11:00 am, Conf. Rm. A1100

TITLE:  Cryostat Design for the APS-U SCUs

SPEAKER:  Yuko Shiroyanagi, ASD-MD

ABSTRACT:  Currently, two planar superconducting undulators (SCU) and one helical superconducting undulator are in operation at the APS storage ring. For all these cryostats, the magnets are cooled independently from the beam chamber and a magnet/mold is cooled by LHe in the Helium channel which is cooled by cryocoolers. Based on these design and operational experiences, a new APSU-SCU cryostat is being developed.  FEA model of SCU cryostats is developed which includes all the heat source and cooling powers provided by cryocooler load maps. In this talk, I will present a method to calculate an excess cooling power first, then this method is bench marked by FEA model of the 1st generation (SCU1) cryostat. Secondly, FEA model of the 2nd generation (HSCU) cryostat is presented and calculation and measurement are compared. Finally, current status of the FEA model of APS-SCU cryostat is presented.

2018 ASD Seminars
Oct. 3 Cryostat Design for the APS-U SCUs Joel Fuerst, ASD-MD
Sept. 19 Undulators for the APS-U Roger Dejus, ASD-MD
Sept. 12 Superconducting undulators at Karlsruhe Institute for Technology (KIT) Sara Casalbuoni, KIT-Germany
Sept. 5 Recent Developments in Superconducting Undulators at the APS Yury Ivanyushenkov, ASD-MD
June 7 FPGAs at the boundary between accelerator hardware and software

Carlos Serrano, LBNL
Larry Doolittle, LBNL

April 26 Beam Diagnostics for
the APS MBA Upgrade
Nick Sereno
April 16 Free-electron laser activities at Shanghai

Theoretical studies on X-ray free-electron laser oscillator
Haixiao Deng, SINAP

April 11 Design and Test Results for a 1.5 m long Nb3Sn Superconducting Undulator Diego Arbelaez, LBNL
March 27 Performance and Developments of NSLS-II BPMs Weixing Cheng, BNL
Past Seminars by Year