Author: Peters, C.E.
Paper Title Page
TUPHA131 PLC Based Vacuum Controller Upgrade and Integration at the Argonne Tandem Linear Accelerator System 724
 
  • C.E. Peters, C. Dickerson, A.E. Germain, Y. Luo, M.A. Power, R.C. Vondrasek
    ANL, Argonne, Illinois, USA
 
  Funding: This work was supported by the U.S. Department of Energy, Contract No. DE-AC02-06CH11357. This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User Facility.
The in­stal­la­tion of a new Elec­tron Beam Ion Source (EBIS) to the Ar­gonne Tan­dem Lin­ear Ac­cel­er­at­ing Sys­tem (ATLAS) at Ar­gonne Na­tional Lab­o­ra­tory re­quires a vac­uum sys­tem ca­pa­ble of pro­vid­ing pres­sures in the re­gion of 10-10 Torr. His­tor­i­cally, vac­uum in­ter­locks have been pro­vided via ana­log logic chas­sis which are dif­fi­cult to up­grade and main­tain. In order to pro­vide suf­fi­cient in­ter­locks to pro­tect high volt­age com­po­nents of the EBIS, a new pro­gram­ma­ble logic con­troller (PLC) based Vac­uum con­trol sys­tem has been de­vel­oped and in­te­grated into the rest of the ac­cel­er­a­tor su­per­vi­sory con­trol sys­tem. The PLC in­ter­faces not only with fast act­ing relay based in­ter­lock sig­nals but also with RS-485 based se­r­ial de­vices to mon­i­tor and con­trol lower pri­or­ity pa­ra­me­ters such as pump speeds, vac­uum pres­sure read­out and set points, run hours and more. This work pre­sents the struc­ture and in­ter­face logic nec­es­sary to com­mu­ni­cate with a range of vac­uum gauges, turbo-mol­e­c­u­lar pumps and ion pump con­trollers. In ad­di­tion, the strat­egy to in­ter­face vac­uum con­trol with the rest of the ac­cel­er­a­tor con­trol sys­tem is pre­sented.
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA131  
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