Keyword: cryogenics
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TUCB01 Ultrahigh Vacuum in Superconducting Synchrotrons vacuum, ion, booster, synchrotron 23
 
  • A.V. Smirnov, A.V. Butenko, A.R. Galimov
    JINR, Dubna, Moscow Region, Russia
  • A.M. Bazanov, A. Nesterov
    JINR/VBLHEP, Dubna, Moscow region, Russia
  
  The achieve­ment of ul­tra­high vac­uum con­di­tions in the range of 10-10 – 10-12 Torr is a very com­pli­cate task for charged par­ti­cle ac­cel­er­a­tors. For su­per­con­duct­ing ac­cel­er­a­tors the main rest gas is hy­dro­gen which does not freeze ef­fec­tively on the cham­ber wall even under the liq­uid he­lium tem­per­a­ture. Fast ramp of the mag­netic field in the su­per­con­duct­ing syn­chro­trons leads to the heat­ing of the vac­uum cham­ber that brings an ad­di­tional prob­lem for the achieve­ment of the ul­tra­high vac­uum. In this talk the re­view of ul­tra­high vac­uum sys­tems in su­per­con­duct­ing ac­cel­er­a­tors is pre­sented. Non-evap­o­rated get­ters under the liq­uid ni­tro­gen tem­per­a­ture are planned to the achieve­ment of nec­es­sary vac­uum con­di­tions in the new ac­cel­er­a­tor com­plex of the NICA pro­ject (JINR, Rus­sia).  
slides icon Slides TUCB01 [2.220 MB]  
 
THZ03 Production of Superconducting Equipment at IHEP dipole, quadrupole, solenoid, superconductivity 301
 
  • L. Tkachenko, A.I. Ageev, I. Bogdanov, E. Kashtanov, S. Kozub, P.A. Shcherbakov, L.S. Shirshov, I. Slabodchikov, V. Sytnik, S. Zinchenko
    IHEP, Moscow Region, Russia
  
  The re­port overviews the re­cent SC-re­lated R&D and pro­duc­tion ac­tiv­ity at IHEP. The scope of the paper ex­tends over the items to fol­low. Two su­per­con­duct­ing mag­netic sys­tems of Elec­tron Lens for the Teva­tron col­lider were de­vel­oped, man­u­fac­tured and suc­cess­fully brought into op­er­a­tion. 42 cryo­genic elec­tri­cal feed boxes of var­i­ous types for the Large Hadron Col­lider were de­vel­oped, pro­duced and com­mis­sioned. Re­sults of de­vel­op­ment of fast-cy­cling SC mag­nets for the FAIR pro­ject are dis­cussed. Op­er­a­tional ex­pe­ri­ence ac­quired with the largest in Rus­sia cryo­genic sys­tem for cool­ing with a su­per­fluid he­lium of SC RF sep­a­ra­tor for the beam trans­fer line #21from the U-70 ma­chine is pre­sented. Test-and-trial re­sults with HTS cur­rent leads and di­pole mag­net em­ploy­ing Bi2223 as well as race­track coils made of sec­ond-gen­er­a­tion HTS are re­viewed.  
slides icon Slides THZ03 [0.823 MB]