Specification for Design of High Stability Supports
- Brookhaven National Lab. (BNL), Upton, NY (United States)
Stability requirements High stability BPM will be used for stabilization of transverse position of the electron beam circulating in the storage ring. To provide required stability overall error in the beam position should not exceed 0.15 microns for the vertical plane and 2 microns in the horizontal plane. Assuming electronic noise of the BPM receivers 0.1 microns we can find that vertical position of the BPM should be stable within 0.1 microns, while allowable horizontal mechanical motion is defined by the required error. For the longitudinal position we assume that electron beam travels 1 milliradians angle with respect to the axis. In this case longitudinal motion will translate into the observed transverse position δx, y = α x,y δs and tolerances will be defined by the requirements vertical plane. For 0.01 microns error longitudinal displacement should not exceed 10 μm. These requirements are for r.m.s. motion over 8 hours time period (note that end station located at 25 m from the source will move by 1.5 microns r.m.s. due to the ground motion).
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- DOE Contract Number:
- SC0012704
- OSTI ID:
- 1481159
- Report Number(s):
- NSLSII-ASD-TN-039; BNL-209374-2018-TECH
- Country of Publication:
- United States
- Language:
- English
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