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CKOV-1 PROGRESS

CKOV-1 PROGRESS. L. Cremaldi, D. Summers, R. Godang, M. Reep, B. Rankins U. Mississippi MICE MEETING- Frascati JUNE 25, 2005. CONCEPT. Simple Design, PID Redundancy, Immune to Decay in Flight. Aperture based on Tom Roberts beam spread plots at

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CKOV-1 PROGRESS

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  1. CKOV-1 PROGRESS L. Cremaldi, D. Summers, R. Godang, M. Reep, B. Rankins U. Mississippi MICE MEETING- Frascati JUNE 25, 2005

  2. CONCEPT • Simple Design, PID Redundancy, Immune to Decay in Flight. • Aperture based on Tom Roberts beam spread plots at • CKOV1. Sizing the radiator aperture at R =230mm. • The window will be fused silica 1/8-1/4 inch or UV • transmitting glass (Suprasil, etc. ). • Light collection by 4 flat triangular mirrors • + 4 x 8” PMTs (+ cones??) - Baseline. • Light collection studies underway to determine mirror • type (focusing/flat), position etc. - RayTracing. • Radiator for p = 240-280 MeV/c challenging! • C6F14(n=1.25), LN2(n=1.205), Aerogel(n=1.12) under study. • G4MICE cross checks by Steve Kahn important.

  3. MUON BEAM at CKOV1 Accepted muons 23cm Accepted muons 23cm

  4. 24” 3”od 6” 4” 4” 8”od 3” 1/8”x 19” od Quartz Window C6F14 Chamber 1/8” Glass MIRROR 18” 20” 53o 53 o 1/8” Glass MIRROR 2.25” 1/8” Al 8” PMT BaseLine Design

  5. C6F14 n=1.251 LN2 n=1.205    AEROGEL n=1.12    Radiators and Momentum Thresholds

  6. CKOV1- Monte Carlo 10 cm FC72 Radiator (n=1.25) at 240, 280 MeV/c 240 MeV/c 10 cm FC72 280 MeV/c 10 cm FC72 pions pions muons muons 79 126 134 170

  7. 240 MeV/c 10 cm LN2 280 MeV/c 10 cm LN2 pions pions muons muons 66 98 38 82 CKOV1- Monte Carlo 10 cm LN2 Radiator (n=1.20 ) at 240, 280 MeV/c

  8. 240 MeV/c 10 cm FC72 280 MeV/c 10 cm FC72 pions pions 2 3 muons muons 16 28 CKOV1- Monte Carlo 10 cm AEROGEL (n=1.12) Radiator at 240, 280 MeV/c

  9. HIGH INDEX AEROGEL INQUIREY - Matsushita Hello I'm interested in some high index (n=1.08 and n=1.12) aerogel tiles. Might you be able to supply such a product? Best Regards, Don Summers, Ph.D. Dear Prof. Don Summers: Thank you for your inquiry for our silica aerogels. My name is Hiroko Hasegawa, in Matsushita Electric Works, Ltd. We don't have any products of high index ( n=1.08 and 1.12 ) aerogel tiles. On the other hand, we could develop them if you would require more than 10 liters and the price could be matched. However, they should not be transparent (clouded or translucent). We hope to hear from you. Sincerely yours, Hiroko Hasegawa +++++++++++++++++++++++++++++++++++++++++ Hiroko Hasegawa Coating Business Promotion Group New Business Promotion Department Matsushita Electric Works, Ltd 1048 Kadoma,Osaka,571-8686 Japan <TEL> +81-6-6906-2018 (MIC:8711-2104) <FAX> +81-6-6904-4457 <Address> hhasegawa@mewe1.mewnet.or.jp +++++++++++++++++++++++++++++++++++++++++

  10. LN2 Reservoir Light Box Foam Insulation Vacuum Window N2 Flush LN2 CONCEPT Muon hodoscope • Cryo Engineering • Foam Insulation • Vaccuum Windows • Humidity Control • N2 Flush • Thermal Radiation? • P =  (TLn24 - Tbox4 )

  11. y y  x z Ray Tracing 2 bounce • MIRROR SEGMENTATION and LIGHT COLLECTION BAFFLES BEING STUDIED.

  12. y z x LIGHT COLLECTION at PMT SURFACES 1 1 2 4 geo~50% 3 2 250 MeV/c Muons LN2 Beam spread 3 4

  13. LIGHT COLLECTION OPTIMIZATION 35o Tilting Wing Mirrors by ~35o in each quadrant- Poor Mans Focusing.

  14. PRELIMINARY EFFICIENCY SCAN 90% x-position (cm)

  15. SUMMARY • Further Scrutiny of 4- Mirror Baseline Design. • Efficiency Scans - Promising - Further studies. • High Density Aerogel a good choice 240-280 MeV/c. • -but poor Transparency !! • LN2 New Baseline for (240-280) MeV/c! • Some advantage to adding Muon Position Hodoscope • in PID Reco Algorithm. • RayTracing Optimization of Mirror and PMT Components • In Progress. • Test Beam in Fall 05. • Performance Tests in G4-MICE. • Full Design by Jan 06. Mechanical Drawing etc.

  16. Radiators and Momentum Thresholds

  17. 00 deg 165 15 deg 165 30 deg 165 45 deg 334 60 deg 386 75 deg 379

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