Vacuum Performance of the Diamond Light Source Invacuum Insertion Devices

Authors: Matthew Cox (Diamond Light Source) , Stephen Bryan (Diamond Light Source) , B.f Macdonald (Diamond Light Source) , Hugo Shiers (Diamond Light Source)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: 11th Biennial European Particle Accelerator Conference (EPAC '08)
Peer Reviewed: No

State: Published (Approved)
Published: June 2008

Abstract: 9 in-vacuum insertion devices (in-vac IDs) have been installed and commissioned in the Diamond storage ring. All 9 units meet the target operating pressure of 5.10-9 mbar or lower with a stored beam current of 300mA. At 100mA stored beam current, a similar pressure is achieved with a beam conditioning dose of approximately 10A.h following a new installation. The pressure also recovers rapidly following a vacuum intervention. Installation and vacuum intervention procedures developed at Diamond which do not require in-situ bakeout to achieve ultra-high vacuum (UHV) conditions are described. The omission of an in-situ bake has no significant effect on the operational vacuum performance and considerably shortens the installation time.

Subject Areas: Engineering

Technical Areas: Insertion Devices , Vacuum


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