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Single-pass BPM system of the Photon Factory storage ring
T Honda1, M Katoh, T Mitsuhashi
1Photon Factory, KEK, High Energy Accelerator Research Organization, Oho 1-1, Tsukuba, Ibaraki 305, Japan.
Journal of Synchrotron Radiation
|July 21, 2004
Summary
A new beam-position monitor (BPM) system is being developed for the Photon Factory
Area of Science:
- Particle accelerators
- Synchrotron radiation facilities
- Beam diagnostics
Background:
- The Photon Factory operates a 2.5 GeV electron storage ring.
- Commissioning a new low-emittance lattice requires precise beam monitoring.
- Beam transport lines need stable injection energy and orbit control.
Purpose of the Study:
- To prepare a single-pass beam-position monitor (BPM) system for the storage ring and beam transport line.
- To enable measurement of injected beam position during initial turns.
- To facilitate continuous orbit monitoring in the beam transport line.
Main Methods:
- Installation of stripline BPMs in the beam transport line.
- Utilizing a single injection pulse for multi-turn orbit measurement in the storage ring.
- Implementing a BPM system for the 2.5 GeV ring.
Main Results:
- The BPM system demonstrates adequate performance for commissioning.
- The system allows measurement of injected beam position within the first several turns.
- Stripline BPMs are being installed for beam transport line monitoring.
Conclusions:
- The developed BPM system is crucial for the commissioning of the new low-emittance lattice.
- Continuous orbit monitoring in the beam transport line enhances injection stability.
- The BPM system supports precise control of injection energy and beam orbit.