Keyword: data-acquisition
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MOPAB031 Orbit Measurements in the BESSY II Booster in Preparation for Quasi-Low-Alpha Operation booster, injection, lattice, extraction 146
 
  • T. Atkinson, E. Motuk, M. Ries, M. Ulrich
    HZB, Berlin, Germany
  
  Di­ag­nos­tic re­fur­bish­ments are on­go­ing in the booster syn­chro­tron in prepa­ra­tion for the near fu­ture Vari­able pulse Stor­age Ring (VSR) pro­ject at BESSY II. Es­sen­tial orbit mea­sure­ments have been re-in­stalled after al­most two decades of la­tency. This di­ag­nos­tic will help as­sess the ef­fec­tive­ness of the pos­si­ble up­grade sce­nar­ios such as quasi-low-al­pha op­er­a­tion and ex­trac­tion op­ti­miza­tion. The con­tri­bu­tion pre­sents the pre­lim­i­nary re­sults of the con­tin­ual global up­grade of the in­jec­tor sys­tems.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB031  
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MOPAB089 Development of a Digital Beam Signal Processor Test System Based on MATLAB and SCPI EPICS, controls, hardware, software 329
 
  • F.Z. Chen, L.W. Lai, Y.B. Leng, N. Zhang
    SSRF, Shanghai, People's Republic of China
  • Y.B. Yan
    SINAP, Shanghai, People's Republic of China
  
  The SXFEL (Soft X-ray Free Elec­tron Laser) and DCLS (Dalian Co­her­ence Light Source) have been under con-struc­tions since 2015. To sat­isfy the huge de­mands of dig­i­tal beam po­si­tion mon­i­tor proces­sor, we batch pro-duced over 200 sets of DBPM proces­sor. This paper de-scribes a high au­to­matic test plat­form based on MAT­LAB and SCPI, used for the de­vice ac­cep­tance test and per­for­mance eval­u­a­tion. The sim­u­la­tion beam sig-nals gen­er­ated by the Ag­i­lent sig­nal source MXG N5181A, con­nected to a 4-way power split­ter. The net­work con­trol sys­tem based on the ar­chi­tec­ture of the client and server mode, in­te­grated in­stru­ments test com­mands and ex­per-imen­tal data trans­ferred via a Mer­cury router. Using EP-ICS LabCA re­al­ized the data ac­qui­si­tion chan­nel ac­cess in­ter­face. The plat­form has been suc­cess­fully used for the Dalian Co­her­ent Light Source (DCLS) de­vices ac­cep­tance test­ing, the noise level, crosstalk be­tween chan­nels, am­pli-tude fre­quency re­sponse and SNR test re­ports au­to­matic gen­er­a­tion under test.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB089  
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MOPAB091 Transverse Beam Instability Observation and Investigation Using Bunch by Bunch on-Line DAQ System experiment, feedback, storage-ring, vacuum 335
 
  • N. Zhang, L.W. Lai, Y.B. Leng
    SSRF, Shanghai, People's Republic of China
  
  Funding: supported by National Natural Foundation of China (11375255 and 11375254)
Tank im­ped­ance of in-vac­uum in­ser­tion de­vice is one im­por­tant source of beam trans­verse in­sta­bil­ity, which was ex­pected to be sup­pressed by trans­verse feed­back sys­tem (TFB). For the ob­ser­va­tion and study of trans­verse in­sta­bil­ity af­fected by in­ser­tion de­vice and TFB, sets of an in-vac­uum un­du­la­tor nar­row gap set­ting and TFB gain set­ting were op­er­ated in a beam-based ex­per­i­ment. A bunch-by-bunch (BYB) po­si­tion on-line DAQ sys­tem was em­ployed in the mea­sure­ment to char­ac­ter­ize fre­quen­cies of in­di­vid­ual bunches. Bunch-train trans­verse os­cil­la­tion am­pli­tude vari­a­tion were curved by har­monic analy­sis. In this paper, we will in­tro­duce the BTB ADQ sys­tem, and re­port on the mea­sure­ment ex­per­i­ment and re­lated data analy­sis. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB091  
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MOPAB102 Fast Orbit Response Matrix Measurements at ALBA storage-ring, linear-dynamics, optics, non-linear-dynamics 365
 
  • Z. Martí, G. Benedetti, M. Carlà, J. Fraxanet, U. Iriso, J. Moldes, A. Olmos, R. Petrocelli
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
  
  At ALBA the stan­dard orbit re­sponse ma­trix mea­sure­ment with DC cor­rec­tor mag­net (CM) mod­u­la­tion is being up­graded with an AC ex­ci­ta­tion of the cor­rec­tors com­bined with the syn­chro­nized beam po­si­tion mon­i­tor (BPM) ac­qui­si­tion data rate at 10 kHz. Sev­eral types of ex­ci­ta­tion wave­forms (si­nu­soidal vs square types) and fre­quen­cies have been tested and com­pared to op­ti­mize the mea­sure­ment pre­ci­sion and re­peata­bil­ity. The data ac­qui­si­tion time of the ALBA re­sponse ma­trix (88 hor­i­zon­tal and 88 ver­ti­cal cor­rec­tors) with the new AC method takes 1 minute to com­plete in­stead of 7 min­utes of the stan­dard tech­nique.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB102  
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MOPAB125 Post-Mortem System for the Taiwan Photon Source kicker, timing, operation, photon 422
 
  • C.Y. Liao, Y.-S. Cheng, K.T. Hsu, K.H. Hu, C.H. Huang, C.Y. Wu
    NSRRC, Hsinchu, Taiwan
  
  The Tai­wan Pho­ton Source (TPS), a 3-GeV third-gen­er­a­tion syn­chro­tron light source lo­cated in Hsinchu, is avail­able to users since 2016. Dur­ing op­er­a­tion, it will in­evitably en­counter sys­tem trips caused by beam losses. Thus, a post-mortem (PM) sys­tem is an im­por­tant tool to an­a­lyze the cause of such events. Main func­tions of the PM sys­tem are: (i) PM trig­ger will be gen­er­ated when the stored beam is sud­denly lost ab­nor­mally; (ii) stor­age of rel­e­vant sig­nals when the server re­ceives such a trig­ger; (iii) PM Viewer to an­a­lyze each event and un­der­stand the cause and ef­fect of a beam trip event. The post-mortem sys­tem ar­chi­tec­ture, plans and im­ple­men­ta­tion will be dis­cussed in this re­port.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB125  
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TUOBA3 Strain and Temperature Measurements From the SNS Mercury Target Vessel During High Intensity Beam Pulses target, simulation, radiation, injection 1230
 
  • W. Blokland, Y. Liu, B.W. Riemer, M. Wendel, D.E. Winder
    ORNL, Oak Ridge, Tennessee, USA
  
  Funding: ORNL is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy. This research was supported by the DOE Office of Science, Basic Energy Science, Scientific User Facilities.
To bet­ter un­der­stand the me­chan­i­cal im­pact of the pro­ton beam on the life­time on Spal­la­tion Neu­tron Source (SNS*) mer­cury-filled, stain­less steel tar­gets, these tar­gets are now in­stru­mented with op­ti­cal and metal strain sen­sors, tem­per­a­ture sen­sors, and ac­celerom­e­ters. The strain and tem­per­a­ture sen­sors are placed in­side the tar­get ves­sel, be­tween the water shroud and mer­cury ves­sel, while the ac­cel­er­a­tors are placed out­side on the tar­get mount and on the mer­cury re­turn line. We now have data from four tar­gets. The first in­stru­mented tar­get used reg­u­lar mul­ti­mode op­ti­cal sen­sors, while later tar­gets have used rad­hard mul­ti­mode sen­sors. We are also de­vel­op­ing su­per-rad­hard sin­gle-mode op­ti­cal strain sen­sors to get data fur­ther into the pro­duc­tion cycle. In this paper, we de­scribe the data-ac­qui­si­tion sys­tem, com­pare the mea­sured strain to the sim­u­lated strain for the dif­fer­ent tar­gets, es­ti­mate the sur­viv­able ra­di­a­tion level for each type of sen­sor, and dis­cuss the im­pli­ca­tions of the re­sults on the life­time of the tar­get. 		 
slides icon Slides TUOBA3 [37.266 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUOBA3  
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TUOAB1 First LHC Transverse Beam Size Measurements With the Beam Gas Vertex Detector detector, target, hardware, vacuum 1240
 
  • A. Alexopoulos, C. Barschel, E. Bravin, G. Bregliozzi, N. Chritin, B. Dehning, M. Ferro-Luzzi, M. Giovannozzi, R. Jacobsson, L.K. Jensen, O.R. Jones, V. Kain, R. Matev, M.N. Rihl, V. Salustino Guimaraes, R. Veness, S. Vlachos, B. Würkner
    CERN, Geneva, Switzerland
  • A. Bay, F. Blanc, S. Gianì, O. Girard, G.J. Haefeli, P. Hopchev, A. Kuonen, T. Nakada, O. Schneider, M. Tobin, Q.D. Veyrat, Z. Xu
    EPFL, Lausanne, Switzerland
  • R. Greim, W. Karpinski, T. Kirn, S. Schael, A. Schultz von Dratzig, G. Schwering, M. Wlochal
    RWTH, Aachen, Germany
  
  The Beam Gas Ver­tex de­tec­tor (BGV) is an in­no­v­a­tive beam pro­file mon­i­tor based on the re­con­struc­tion of beam-gas in­ter­ac­tion ver­tices which is being de­vel­oped as part of the High Lu­mi­nos­ity LHC pro­ject. Tracks are iden­ti­fied using sev­eral planes of scin­til­lat­ing fi­bres, lo­cated out­side the beam vac­uum cham­ber and per­pen­dic­u­lar to the beam axis. The gas pres­sure in the in­ter­ac­tion vol­ume is ad­justed such as to pro­vide an ad­e­quate trig­ger rate, with­out dis­turb­ing the beam. A BGV demon­stra­tor mon­i­tor­ing one of the two LHC beams was fully in­stalled and com­mis­sioned in 2016. First data and beam size mea­sure­ments show that the com­plete de­tec­tor and data ac­qui­si­tion sys­tem is op­er­at­ing as ex­pected. The BGV op­er­at­ing pa­ra­me­ters are now being op­ti­mised and the re­con­struc­tion al­go­rithms de­vel­oped to pro­duce ac­cu­rate and fast re­con­struc­tion on a CPU farm in order to pro­vide real time beam pro­file mea­sure­ments to the LHC op­er­a­tors.  
slides icon Slides TUOAB1 [3.456 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUOAB1  
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TUPAB146 Vibration Measurements of Super-Conducting Undulator at SSRF undulator, data-analysis, experiment, damping 1675
 
  • R.B. Deng, Y. Liu, L. Wang, S. Xiang
    SINAP, Shanghai, People's Republic of China
  
  Funding: Work supported by the National Natural Science Foundation of China (Grant No. 11405255)
A Su­per-Con­duct­ing Un­du­la­tor (SCU) is being built at SSRF. Me­chan­i­cal sta­bil­ity of SCU is crit­i­cal to beam sta­bil­ity since the cen­tral load is sup­ported by spe­cial strings in SCU and the vi­bra­tion of load will cause di­rectly the vi­bra­tion of beam. In this paper, vi­bra­tion re­sults of sev­eral key com­po­nents in­clud­ing cen­tral load, cold head, frame sup­port, etc, are stud­ied under dif­fer­ent work­ing mode of com­pres­sors. The ground vi­bra­tions at dif­fer­ent dis­tances are com­pared to get the in­flu­ence of com­pres­sors to SCU. Use­ful sug­ges­tions and pos­si­ble mea­sures are de­scribed to mit­i­gate the vi­bra­tion and im­prove SCU sta­bil­ity. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB146  
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WEPVA128 The Data Acquisition System and Inspection Equipment on Vibration Evaluation for Deionized and Cooling Water Pumps in TPS coupling, status, operation, alignment 3568
 
  • Y.-H. Liu, Y.-C. Chung, C.K. Kuan, Z.-D. Tsai
    NSRRC, Hsinchu, Taiwan
  
  The pur­pose of this paper is to eval­u­ate the vi­bra­tion am­pli­tude and spec­trum for TPS water pump sys­tems. The util­ity sys­tems op­er­ate con­tin­u­ously since 2014, some of deion­ized and cool­ing water pumps pro­duced higher vi­bra­tion am­pli­tude and noise dur­ing op­er­a­tion. The pos­si­bly rea­son could be poor sys­tem ac­cu­racy, in­ap­pro­pri­ate in­stal­la­tion and com­mis­sion ad­just­ment. The data ac­qui­si­tion sys­tem on vi­bra­tion eval­u­a­tion for deion­izes water pumps was es­tab­lished in 2016. Ac­cord-ing to the long-tern vi­bra­tion am­pli­tude record­ing, the sys­tem op­er­a­tional sta­tus could be clar­i­fied. After vi­bra-tion test for sev­eral months, the bear­ing of booster deion-ized water pump was found abra­sive since cou­pling be-tween motor and pump mis­aligned. Be­sides, the founda-tion of cop­per deion­ized water pump sys­tem was bro­ken and ob­served by rapidly in­crease vi­bra­tion am­pli­tude in short term. The water pump sys­tems were re­paired and main­tained base on vi­bra­tion eval­u­a­tion. There is still some re­main prob­lems for deion­ized and cool­ing water pump sys­tems. The util­ity sys­tems could pre­vent mal-func­tion through reg­u­lar vi­bra­tion in­spec­tion and daily data ac­qui­si­tion.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPVA128  
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THPVA104 Design of New Spectrum Data Acquisition System timing, interface, framework, controls 4707
 
  • Z.X. Shao, H. Gao, W. Liu, C.Y. Pan
    USTC/NSRL, Hefei, Anhui, People's Republic of China
  
  Funding: Project supported by the National Basic Research Program of China, the National Key Scientific Instrument and Equipment Development Projects, China (2014YQ120351).
To solve the prob­lem of spec­trum ac­qui­si­tion in LIBS (Laser-In­duced Break­down Spec­troscopy), a real-time data ac­qui­si­tion sys­tem was de­signed based on PSoC (Pro­gram­ma­ble Sys­tem-On-Chip). First, the lin­ear array CCD with elec­tronic shut­ter func­tion TCD1304DG has been used as de­tec­tor .And then, the AD7621, a 16-bit ana­log-to-dig­i­tal con­verter, was used to con­vert sig­nal from the AFE (Ana­log Front End). After that, a high-in­te­grated, low-power PSoC5LP was used as core con­troller, it works to com­plete the dri­ver and data com­mu­ni­ca­tion, in­clud­ing CCD , ADC, FIFO, the USB in­ter­face, etc. At last, a WIFI mod­ule has been added to the sys­tem for the con­ve­nience of users as well as fol­low-up re­search. The re­sult through board-level test­ing in­di­cates that the sys­tem in the spec­trum ac­qui­si­tion is sta­ble and ac­cu­rate, and the in­di­ca­tors meet the LIBS pro­ject re­quire­ments. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA104  
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