| Paper | Title | Page |
|---|---|---|
MOP003 |
Design of HEPS Storage Ring Beam Instrumentation | |
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| HEPS is a fourth generation light source which has horizontal emittance around 34pm.rad to gain the high brilliance photon beam, this ultra-low emittance brings many engineering challenges for beam instrumentation. The resolution of the beam position measurement and the beam size measurement is need to reach sub-micro meter. The large current and multi-bunches need bunch by bunch feedback system to cure instabilities. This paper will present an overview of beam instrumentation | ||
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MOP024 |
The Design and Optimization of Digital Beam Position Monitor Processor in HEPS | |
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| The Digital Beam Position Monitor (DBPM) is an important component of the High Energy Photon Source (HEPS). This article mainly introduces the design and development of the digital beam position measurement system based on the main indicators of HEPS, including the overall architecture design of the system, digital electronics design, RF electronics design, and the exposition of core algorithm design. It also provides a detailed performance comparison between the two versions of electronic design before and after optimization, including performance indicators such as flow-dependent, long-term stability, and position resolution. In laboratory testing, under the condition of an input signal of 499.8MHz and K factor is 8.26, the position resolution per turn by turn (TBT) is less than 1um, the fast orbit position resolution (FA) is less than 100nm, and the closed orbit position resolution (SA) is less than 10nm. The beam current-dependence and long-term stability are significantly better than the previous version, and the test results meet the design requirements of the High Energy Photon Source. | ||
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