Author: Rovigatti de Oliveira, G.R.
Paper Title Page
TUPAB310 Establishing a Metrological Reference Network for the Alignment of Sirius 2214
 
  • H. Geraissate, G.R. Rovigatti de Oliveira
    LNLS, Campinas, Brazil
  • R. Junqueira Leão
    CNPEM, Campinas, SP, Brazil
  
  Sir­ius is the Brazil­ian 4th gen­er­a­tion syn­chro­tron light source. It con­sists of three elec­tron ac­cel­er­a­tors and it has room for up to 38 beam­lines. To make the align­ment of Sir­ius com­po­nents pos­si­ble, there is a need for a net­work of points com­pris­ing the in­stal­la­tion vol­ume, al­low­ing the lo­ca­tion of portable co­or­di­nate in­stru­ments on a com­mon ref­er­ence frame. This work de­scribes the de­vel­op­ment of such net­works for the whole Sir­ius fa­cil­ity. The lay­out of the net­works is pre­sented to­gether with the sur­vey strate­gies. De­tails are given on how the cal­cu­la­tions com­bined laser track­ers and op­ti­cal level mea­sure­ments data and how the Earth cur­va­ture com­pen­sa­tion was per­formed. A novel laser tracker ori­en­ta­tion tech­nique ap­plied for link­ing net­works on dif­fer­ent en­vi­ron­ments is also pre­sented. Fi­nally, the un­cer­tainty es­ti­ma­tion for the re­sult­ing net­work and its de­for­ma­tion his­tory is shown.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB310  
About • paper received ※ 20 May 2021       paper accepted ※ 07 June 2021       issue date ※ 21 August 2021  
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THXB06 Results of the First Alignment Run for Sirius 3728
 
  • R. Junqueira Leão, R. Oliveira Neto
    CNPEM, Campinas, SP, Brazil
  • H. Geraissate, F. Rodrigues, G.R. Rovigatti de Oliveira
    LNLS, Campinas, Brazil
  
  It is widely known that the po­si­tion of par­ti­cle ac­cel­er­a­tor com­po­nents is crit­i­cal for its per­for­mance. For the lat­est gen­er­a­tion light sources, whose mag­netic lat­tice is op­ti­mized for achiev­ing very low emit­tance, the tol­er­a­ble mis­align­ments are in the order of a few dozen mi­crom­e­ters. Due to the perime­ter of these ma­chines, the re­quire­ments push the lim­its of large-vol­ume di­men­sional metrol­ogy and as­so­ci­ated in­stru­ments and tech­niques. Re­cently a fine align­ment cam­paign of the Sir­ius ac­cel­er­a­tors was con­ducted fol­low­ing the pre-align­ment per­formed dur­ing the in­stal­la­tion phase. To con­form with the strict rel­a­tive po­si­tion­ing de­mands, mea­sure­ment good prac­tices were fol­lowed, and sev­eral 3D metrol­ogy pro­ce­dures were de­vel­oped. Also, to im­prove po­si­tion­ing res­o­lu­tion, high rigid­ity trans­la­tion de­vices were pro­duced. Fi­nally, the spe­cial tar­get hold­ers de­signed as re­mov­able fidu­cials for the mag­nets were re­vis­ited to as­sure max­i­mum re­li­a­bil­ity. Data pro­cess­ing al­go­rithms were im­ple­mented to eval­u­ate the align­ment re­sults in a ro­bust and agile man­ner. This paper will pre­sent the final po­si­tion­ing er­rors for Sir­ius mag­nets with an ex­pres­sion of the es­ti­mated un­cer­tainty.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THXB06  
About • paper received ※ 20 May 2021       paper accepted ※ 02 July 2021       issue date ※ 01 September 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)