| 1. |
- Breunlin, J., et al.
(författare)
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BEAM STABILITY IN THE MAX IV 3 GeV STORAGE RING
- 2022
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Ingår i: 2022 International Beam Instrumentation Conference, IBIC 2022 - Proceedings. - 9783954502417 ; , s. 370-373
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Konferensbidrag (refereegranskat)abstract
- The MAX IV Laboratory, inaugurated in 2016, hosts a 3 GeV ultra-low emittance storage ring, a 1.5 GeV storage ring and a linear accelerator driven Short Pulse Facility to deliver synchrotron radiation to scientific users. A Stability Task Force has been assigned to ensure the delivery of stable beams since early on in the design phase of the laboratory and is continuing its work in an ongoing and multi-disciplinary effort. Measurements of the electron beam stability resulting from the passive stabilization approach taken for the two storage rings will be presented, as well as figures of beam stability with the Fast Orbit Feedback system in operation. Each ID beamline in the 3 GeV storage ring is equipped with a pair photon beam position monitors that are currently used to complement the electron beam position monitors. In the light of the city development around the MAX IV campus, maintaining the good mechanical stability of the laboratory has to be seen as an ongoing effort. A number of studies are being performed to identify possible risks and to decide where measures need to be taken.
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| 2. |
- Freitas, Áureo, et al.
(författare)
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CONTROL SYSTEM SUITE FOR BEAM POSITION MONITORS AT MAX IV
- 2022
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Ingår i: 2022 International Beam Instrumentation Conference, IBIC 2022 - Proceedings. - 2673-5350. - 9783954502417 ; , s. 496-499
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Konferensbidrag (refereegranskat)abstract
- MAX IV is a fourth generation synchrotron facility at Lund, Sweden. It is composed of a full energy linear accelerator and two storage rings with 1.5 GeV and 3 GeV, which requires hundreds of beam position monitors. In this context, Libera Single Pass E and Libera Brilliance+ are employed as BPM instruments. This paper will present an overview of the control system suite used in the facility, including the communication, data acquisition and storage pipelines, monitoring, configuration and software maintainability.
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| 3. |
- Ilinski, P.
(författare)
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NOVEL PHOTOEMISSION TYPE OF X-RAY BEAM POSITION MONITOR FOR THE 'WHITE' UNDULATOR RADIATION
- 2022
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Ingår i: Proceedings of the International Beam Instrumentation Conference, IBIC. - 9783954502417 ; , s. 159-162
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Konferensbidrag (refereegranskat)abstract
- A novel photoemission type of X-ray Beam Position Monitor (XBPM) for the 'white' undulator radiation is proposed. The XBPM employs beamline frontend fixed mask as a source of photocurrent signal. Signal spatial distribution and XBPM response were analyzed for various undulator radiation parameters.
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| 4. |
- Takahashi, C., et al.
(författare)
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MULTI-DIMENSIONAL FEEDFORWARD CONTROLLER AT MAX IV
- 2022
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Ingår i: Proceedings of the International Beam Instrumentation Conference, IBIC. - 9783954502417 ; , s. 335-338
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Konferensbidrag (refereegranskat)abstract
- Feedforward control loops are used in numerous applications to correct process variables. While feedforward control loops correct process variables according to the expected behavior of a system at any given setpoint, feedback loops require measurements of the output to correct deviations from the setpoint. At MAX IV, a generic multi-dimensional input and output feedforward controller was implemented using TANGO Control System. This paper describes the development and use cases of this controller for beam orbit and optics corrections at MAX IV.
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