The PEP-II Lower Pressure HER Vacuum Chamber
Conference
·
OSTI ID:877437
This new vacuum chamber has been installed from 12 to 21 meters upstream of the BaBar detector in the PEP-II High Energy Ring (HER) to reduce lost particle backgrounds. The backgrounds from HER now dominate the backgrounds in the BaBar detector and the present vacuum pressure is 1 x 10{sup -9} Torr. The new chamber will increase the pumping significantly by adding 18 x 2000 l/s titanium sublimation pumps to the existing 5 x 440 l/s ion pumps, and is expected to reduce the pressure by about a factor of five. Features of the chamber include improved water cooling, improved vacuum conductance through copper RF screens featuring over 15,000 small square holes and the ability to sublimate titanium while the beam is still on.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 877437
- Report Number(s):
- SLAC-PUB-11751
- Country of Publication:
- United States
- Language:
- English
Similar Records
The PEP-II Movable Collimators
Interaction region vacuum system design at the PEP-II B factory
HOM Sensitivity in the PEP-II HER Vacuum Chamber
Conference
·
Sun Mar 12 23:00:00 EST 2006
·
OSTI ID:877438
Interaction region vacuum system design at the PEP-II B factory
Conference
·
Mon Jul 21 00:00:00 EDT 1997
·
OSTI ID:16393
HOM Sensitivity in the PEP-II HER Vacuum Chamber
Conference
·
Tue Feb 09 23:00:00 EST 2010
·
OSTI ID:972252