Research and Development on the Storage Ring Vacuum System for the APS Upgrade Project

A number of research and development activities are underway at Argonne National Laboratory to build confidence in the designs for the storage ring vacuum system required for the Advanced Photon Source Upgrade project (APS-U) [1]. The predominant technical risks are: excessive residual gas pressures during operation, insufficient beam position monitor stability, excessive beam impedance, excessive heating by induced electrical surface currents, and insufficient operational reliability. Present efforts to mitigate these risks include: building and evaluating mock-up assemblies, performing mechanical testing of chamber weld joints, developing computational tools, investigating design alternatives, and performing electrical bench measurements. Status of these activities and some of what has been learned to date will be shared.

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References(10)

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[1]

Conceptual Design of a Storage Ring Vacuum System Compatible with Implementation of a Seven Bend Achromat Lattice at the APS

B. Stillwell

[2]

Diffraction-Limited Storage Ring Technology

E. Al-Dmour

- J.Synchrotron Radiat. 21 (2014) 878-883

[3]

Atlas Technologies

- http://www.atlasuhv.com/

[4]

Metallurgical Evaluation of Dissimilar Metal Joints for Accelerator Vacuum Chamber Construction at the Advanced Photon Source Upgrade Project

G. Navrotski
,
B. Brajuskovic

[5]

SYNRAD: A Monte Carlo synchrotron radiation ray-tracing program

R. Kersevan
(
- SSCL
)

- Conf.Proc.C 930517 (1993) 3848-3850,
- In *Washington 1993, Particle accelerator, vol. 5* 3848-3850

[6]

Benchmarking and Calibration of Monte Carlo Vacuum Simulations with SynRad and MolFlow+

J. Carter

[7]

Off-Orbit Ray Tracing Analysis for the APS-Upgrade Storage Ring Vacuum System

•
DOI:
- 10.18429/JACoW-NAPAC2016-MOPOB07

[8]

A Discussion on Utilization of Heat Pipe and Vapor Chamber Technology as a Primary Device for Heat Extraction from Photon Absorber Surfaces

K. Suthar

[9]

Finite Element Analysis of a Photon Absorber based on Volumetric Absorption of the Photon Beam

K. Suthar

[10]

Impedance Measurement of the Vacuum Chamber Components for the Advance Photon Source (APS) Upgrade

M. Sangroula