Keyword: resonance
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MOPE19 Mechatronics Concepts for the New High-Dynamics DCM for Sirius ion, controls, synchrotron, alignment 44
 
  • R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno
    LNLS, Campinas, Brazil
  • M.J.C. Ronde, T.A.M. Ruijl, R.M. Schneider
    MI-Partners, Eindhoven, The Netherlands
 
  Funding: Brazilian Ministry of Science, Technology, Innovation and Communication
The monochromator is known to be one of the most critical optical elements of a synchrotron beamline. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM is under development at LNLS for the future X-ray undulator and superbend beamlines of Sirius. Aiming at inter-crystal stability of a few tens of nrad and considering the limitations of the current DCM implementations, several aspects of DCM engineering are being revisited. The system concept is chosen such that a control bandwidth in the order of 200 to 300 Hz can be achieved. This requires well-designed system dynamics, which can be realized by applying a fundamentally different architecture than that used in common DCM designs, based on principles used in ultra-precision systems for semiconductor manufacturing. As a result, known disturbances can be attenuated or suppressed, and internally excited modes can be effectively handled. The mechatronics concepts and analyses, including the metrological details, are shown.
 
poster icon Poster MOPE19 [5.423 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE19  
About • paper received ※ 11 September 2016       paper accepted ※ 19 September 2016       issue date ※ 22 June 2017  
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MOPE41 Design and Construction of a PW Experimental System of HV Chamber Adaptable, Modular and Stable ion, laser, vacuum, experiment 99
 
  • A. Carballedo, C. Colldelram, J.R. García, R. Monge, L. Nikitina
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
  • J. Hernandez-Toro, L. Roso
    CLPU, Villamayor, Spain
 
  Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no 654148 Laserlab-Europe
In the recent years, the number of high power lasers devoted to particle acceleration has increased in Europe. Additionally to this, some synchrotrons and accelerators are integrating these lasers in its lines, increasing the scientific synergies. The HP laser must be transported in HV. The use of HV also permits good cleanliness in the optical set up. As addition, is necessary to create an adaptable and modular design where several chambers could be assembled together. One additional constrain is the stability. A new model of HV chambers is presented. These consist in a frame where the walls are exchangeable panels, which make easier the introduction of a new configuration of ports. The system was designed as construction blocks. For a proper connection of the chambers a new interior fixation and pushers system was designed. Thanks to this, coupling new HV chambers, the volume total can be also easily modified. Finally, a third generation decoupled system is integrated inside, consisting of a stable breadboard, this supported by six columns that implement a preloaded kinematical mount, providing both an outstanding stability and a fine regulation (1st RM: 77Hz).
 
poster icon Poster MOPE41 [0.938 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE41  
About • paper received ※ 09 September 2016       paper accepted ※ 20 September 2016       issue date ※ 22 June 2017  
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TUCA06 The Girders System for the New ESRF Storage Ring ion, alignment, SRF, storage-ring 147
 
  • F. Cianciosi, T. Brochard, Y. Dabin, L. Goirand, M. Lesourd, P. Marion, L. Zhang
    ESRF, Grenoble, France
 
  The ESRF is proceeding with the design and procurement of its new low emittance storage ring (Extremely Brilliant Source project). This completely new storage ring requires a high performance support system, providing high stability (first resonance frequency about 50Hz) and a precise alignment capability (50µm, manual in transverse direction and motorized in the vertical one). In order to meet these requirements we decided to support the magnets of each of the 32 cells of the synchrotron with four identical girders that was considered the best compromise between cost, complexity and performances. Each of the resulting 128 girders is 5.1m long, carries about seven tons of magnets, and its weight including fixed basement and adjusting system is six tons. The adjustment system relies on modified commercial wedges; their stiffness was evaluated through laboratory tests. The FEA calculations carried out to optimize the design will be presented, together with the results obtained on a complete prototype girder system which was built and extensively tested and confirmed the modal calculations.  
slides icon Slides TUCA06 [17.229 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA06  
About • paper received ※ 07 September 2016       paper accepted ※ 19 September 2016       issue date ※ 22 June 2017  
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