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UA9 layout on SPS

UA9 layout on SPS . Gianluca Cavoto INFN Roma Crystal collimation workshop CERN 25/27 Oct 2010. UA9 @ SPS. Circumference : 6.9 km. UA9 collimation region. Data-taking during dedicated M achine D evelopment days with SPS beam in coast mode (~5 in a year). Collimation region.

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UA9 layout on SPS

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  1. UA9 layout on SPS Gianluca Cavoto INFN Roma Crystal collimation workshop CERN 25/27 Oct 2010

  2. UA9 @ SPS Circumference : 6.9 km UA9 collimation region Data-taking during dedicated Machine Development days with SPS beam in coast mode (~5 in a year). G.Cavoto

  3. Collimation region Protons hitting the crystal BLM Scint Inelastic interaction of protons in the crystal ✖ Deflected beam BLM GEM 65 m Intercepted by LHC collimator Absorbed by secondary collimator(TAL) BLM Scint Imaged byMedipix BLM Cerenkov G.Cavoto

  4. Out of collimation region Second TAL (TAL2 Al scatterer) Scatterer + BLM (scint and Cerenkov) in highly dispersive region Measure the effect of inelastic and quasi elastic [diffractive] events G.Cavoto

  5. IHEP tank Crystal 3 and 4 Scint B & L GEM1 IHEP gon. IHEP goniomenter G.Cavoto

  6. Crystal in IHEP tank Quasi mosaic crystal Strip crystal Crystal 3 Crystal 4 G.Cavoto

  7. Ex-RD22 CERN tank Scint C Two goniometer (crystal 1 and 2) One W scatterer One Cerekov detector GEM2 G.Cavoto

  8. LHC collimator (phase 2) • Instrumented with LHC-type BLM G.Cavoto

  9. Roman Pot 1 • Instrumented with Medipix on both horizontal pot Online! G.Cavoto

  10. Roman pot 2 • Close to TAL, better place to see channeledbeam • No detectors yet • 2 H and 2 V pots for Medipix • Relevant to measurechanneled beam direction (from centroid)and flux of proton of channeledbeam G.Cavoto

  11. TAL absorber Monitored with scintillator(out of vacuum) And Cerenkov (on the W absorber) G.Cavoto

  12. TAL2 in missing magnet half-cell Al scraper/scatterer G.Cavoto

  13. Alignment procedure LHC collimation alignment Crystal and all UA9 movable devices are aligned during each fill. Now standard and fast procedure to find channeling configuration and collimation. Rate increase: stop! Several secondary channeling position G.Cavoto

  14. Summary • UA9 layout is now well established • Need to instrument RP2 with 4 Medipix • Need to add our BLM scint close to SPS collimator • Hardware and DAQ are working • No big failure but keep on eye on radiationdamage of Medipix • Many more details in the following talks G.Cavoto

  15. G.Cavoto

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