Keyword: real-time
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MOPAB005 The MultiMat Experiment at CERN HiRadMat Facility: Advanced Testing of Novel Materials and Instrumentation for HL-LHC Collimators target, experiment, instrumentation, damping 76
 
  • F. Carra, A. Bertarelli, E. Berthomé, C. Fichera, J. Guardia, M. Guinchard, L.K. Mettler, S. Redaelli, O. Sacristan De Frutos
    CERN, Geneva, Switzerland
  • T.R. Furness
    University of Huddersfield, Huddersfield, United Kingdom
  • M. Portelli
    UoM, Msida, Malta
  
  Funding: *Part of the work described in this thesis was developed in the scope of the EuCARD-2 Project, WP11 'ColMat ' HDED', co-funded by the partners and the European Commission under Capacities 7th Framework Programme, Grant Agreement n. 312453. Research supported by the HL-LHC project.
The in­crease of the stored beam en­ergy in fu­ture par­ti­cle ac­cel­er­a­tors, such as the HL-LHC and the FCC, calls for a rad­i­cal up­grade in the de­sign, ma­te­ri­als and in­stru­men­ta­tion of Beam In­ter­cept­ing De­vices (BID), such as col­li­ma­tors Fol­low­ing suc­cess­ful tests in 2015 that val­i­dated new com­pos­ite ma­te­ri­als and a novel jaw de­sign con­ceived for the HL-LHC col­li­ma­tors, a new Hi­Rad­Mat ex­per­i­ment, named 'HRMT36-Mul­ti­Mat', is sched­uled for au­tumn 2017. Its ob­jec­tive is to de­ter­mine the be­hav­iour under high in­ten­sity pro­ton beams of a broad range of ma­te­ri­als rel­e­vant for col­li­ma­tors and beam in­ter­cept­ing de­vices, thin-film coat­ings and ad­vanced equip­ment. The test bench fea­tures 16 sep­a­rate tar­get sta­tions, each host­ing var­i­ous spec­i­mens, al­low­ing the ex­plo­ration of com­plex phe­nom­ena such as dy­namic strength, in­ter­nal damp­ing, non­lin­ear­i­ties due to anisotropic in­elas­tic­ity and in­ho­mo­gene­ity, ef­fects of en­ergy de­po­si­tion and ra­di­a­tion on coat­ings. This paper de­tails the main tech­ni­cal so­lu­tions and en­gi­neer­ing cal­cu­la­tions for the de­sign of the test bench and of the spec­i­mens, the can­di­date tar­get ma­te­ri­als and the in­stru­men­ta­tion sys­tem
#federico.carra@cern.ch 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB005  
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MOPAB131 Transverse Emittance Measurements Using LHCb's Beam-Gas Interactions detector, emittance, experiment, operation 441
 
  • T.B. Hadavizadeh
    Oxford University, Physics Department, Oxford, Oxon, United Kingdom
  • R. Alemany-Fernández, F. Alessio, C. Barschel, G.R. Coombs, M. Ferro-Luzzi, R. Matev
    CERN, Geneva, Switzerland
  
  Mea­sure­ments of the trans­verse beam emit­tance are of great im­por­tance at par­ti­cle ac­cel­er­a­tors such as the LHC in order to mon­i­tor, un­der­stand and im­prove the per­for­mance of the ma­chine. A num­ber of pro­file mon­i­tors at the LHC are ca­pa­ble of mea­sur­ing the trans­verse emit­tance from a range of dif­fer­ent processes in­clud­ing wire scan­ners and beam syn­chro­tron light mon­i­tors, each hav­ing ad­van­tages and short­com­ings. It is pos­si­ble ad­di­tion­ally to mea­sure the beam pro­files using in­ter­ac­tion ver­tices re­con­structed in LHCb's ver­tex lo­ca­tor (Velo). In­ter­ac­tions be­tween col­lid­ing beam par­ti­cles and be­tween beam par­ti­cles and resid­ual gas nu­clei are used to build up a pic­ture of the beam pro­files. To guar­an­tee the re­li­a­bil­ity and qual­ity of the dif­fer­ent emit­tance mea­sure­ments, a ded­i­cated cross-cal­i­bra­tion was per­formed dur­ing a ma­chine de­vel­op­ment pe­riod in Oc­to­ber 2016. The re­sults ob­tained with the LHCb Velo dur­ing this cross-cal­i­bra­tion are pre­sented here.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB131  
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MOPIK091 Development of Real-Time Charge Integrator for the Irradiation Dose Measurement target, background, Ethernet, controls 739
 
  • H.G. Lim, Y.-S. Cho, Y.S. Hwang, M.H. Jung, K. R. Kim
    Korea Atomic Energy Research Institute (KAERI), Gyeongbuk, Republic of Korea
  
  Funding: This work has been supported through KOMAC (KOREA of Multi-purpose Accelerator Complex) operation fund of KAERI by MSIP (Ministry of Science, ICT, and Future Planning).
KOMAC (Korea of Multi-pur­pose Ac­cel­er­a­tor Com­plex, Gyeongju, Korea) has sev­eral kinds of fa­cil­i­ties using pro­ton beam or ion beam. The KOMAC has pro­vided beam ser­vice to user group since 2013. For ef­fec­tive beam ser­vice, it is im­por­tant that ir­ra­di­a­tion dose at a tar­get should be sup­plied as much as user re­quires. To con­trol the ir­ra­di­a­tion dose of tar­get, a multi-chan­nels charge in­te­gra­tor, Fara­day cups, and a beam shut­ter are used. The amount of ir­ra­di­a­tion dose is cal­cu­lated in real time by ac­cu­mu­la­tive charge, which is rep­re­sented to in­te­gra­tion of in­duced cur­rent at each Fara­day cup for the tar­get. If the mea­sure­ments reach to the set value (de­sired dose), the beam is au­to­mat­i­cally blocked by beam shut­ter. Thus, pre­cise mea­sure­ment of ac­cu­mu­la­tive charge is re­quired. For out pur­pose, two kinds of real-time charge in­te­gra­tors were im­ple­mented with dif­fer­ent mea­sur­ing ranges. In order to ver­ify per­for­mance of the in­te­gra­tors, each de­vice's lin­ear­ity was eval­u­ated after mea­sur­ing ac­cu­mu­la­tive charge cor­re­spond­ing to dc cur­rent. And their mea­sur­able range was de­ter­mined. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPIK091  
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TUPIK057 The Real-Time Waveform Mask Interlock System for the RF Gun Conditioning of the ELI-NP Gamma Beam System gun, vacuum, operation, software 1822
 
  • S. Pioli, D. Alesini, A. Gallo, L. Piersanti
    INFN/LNF, Frascati (Roma), Italy
  • F. Cardelli, L. Palumbo
    University of Rome La Sapienza, Rome, Italy
  • D.T. Palmer
    Istituto Nazionale di Fisica Nucleare, Milano, Italy
  
  The new Gamma Beam Sys­tem (GBS), within the ELI-NP pro­ject, under in­stal­la­tion in Magurele (RO) by INFN, as part of Eu­roGam­mas con­sor­tium, can pro­vide gamma rays that open new pos­si­bil­i­ties for nu­clear pho­ton­ics and nu­clear physics. ELI-GBS gamma rays are pro­duced by Comp­ton back-scat­ter­ing to get mono­chro­matic­ity (0,1% band­width), high flux (1013 pho­ton/s the high­est in the world), tun­able di­rec­tions and en­er­gies up to 19 MeV. Such gamma beam is ob­tained when a high-in­ten­sity laser col­lides a high-bright­ness elec­tron­beam with en­er­gies up to 720 MeV. The RF-Gun, made with the novel clamp­ing gas­ket tech­nique, work­ing in '-mode at 100 Hz with a max. RF input of 16 MW, RF peak field of 120 MV/m and fill­ing time of 420 ns was fully tested and con­di­tioned few month ago at ELSA. This paper will de­scribe the real-time fast-in­ter­lock sys­tem based on wave­form mask tech­nique used dur­ing RF Gun con­di­tion­ing in order to mon­i­tor on-line re­flected RF sig­nals for a faster pulse-to-pulse de­tec­tion of break­downs and to en­sure the safety of Gun and mod­u­la­tor trip­ping such de­vices be­fore next RF pulse.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK057  
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