Ground motion improvements in SPEAR3
Journal Article
·
· Chinese Physics. C, High Energy Physics and Nuclear Physics
SPEAR3 is a third-generation synchrotron light source storage ring, about 234 meters in circumference. To meet the beam stability requirement, our goal is to ultimately achieve an orbit variation (relative to the photon beam lines) of less than 10% of the beam size, which is about 1 micron in the vertical plane. Hydrostatic leveling system (HLS) measurements show that the height of the SPEAR3 tunnel floor can vary by tens of microns daily without thermal insulation improvements. We present an analysis of the HLS data that shows that adding thermal insulation to the concrete walls of the storage ring tunnel dramatically decreased diurnal tunnel floor motion.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1238572
- Report Number(s):
- SLAC-PUB-16479
- Journal Information:
- Chinese Physics. C, High Energy Physics and Nuclear Physics, Vol. 40, Issue 9; ISSN 1674-1137
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
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