ckov-1 progress
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
CKOV-1 PROGRESSL. Cremaldi, D. Summers,
R. Godang, M. Reep, B. RankinsU. Mississippi
MICE MEETING- FrascatiJUNE 25, 2005
• 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 UVtransmitting glass (Suprasil, etc. ).
•Light collection by 4 flat triangular mirrors + 4 x 8” PMTs (+ cones??) - Baseline.
•Light collection studies underway to determine mirrortype (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.
CONCEPT
Acceptedmuons
Acceptedmuons
MUON BEAM at CKOV1
23cm
23cm
C6F14Chamber
8”od
3”od
4”4”
53 o
6”
20” 53o18”
2.25”
1/8” Al
1/8” GlassMIRROR
1/8” GlassMIRROR
1/8”x 19” od Quartz Window
8” PMT
3”
24”
BaseLine Design
Radiators and Momentum Thresholds
C6F14 n=1.251
LN2 n=1.205
AEROGEL n=1.12
CKOV1- Monte Carlo 10 cm FC72 Radiator (n=1.25) at 240, 280 MeV/c
79 126
pions
muons
240 MeV/c10 cm FC72
280 MeV/c10 cm FC72
134 170
muons
pions
66 98
pions
muons
280 MeV/c10 cm LN2
240 MeV/c10 cm LN2
38 82
pions
muons
CKOV1- Monte Carlo10 cm LN2 Radiator (n=1.20 ) at 240, 280 MeV/c
2
16
pions
muons
240 MeV/c10 cm FC72
280 MeV/c10 cm FC72
3
28
muons
pions
CKOV1- Monte Carlo 10 cm AEROGEL (n=1.12) Radiator at 240, 280 MeV/c
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 HasegawaCoating Business Promotion GroupNew Business Promotion DepartmentMatsushita Electric Works, Ltd1048 Kadoma,Osaka,571-8686 Japan<TEL> +81-6-6906-2018 (MIC:8711-2104)<FAX> +81-6-6904-4457<Address> [email protected]+++++++++++++++++++++++++++++++++++++++++
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.
HIGH INDEX AEROGEL INQUIREY - Matsushita
LN2 CONCEPT
Foam Insulation
LN2 Reservoir
Vacuum Window
Light Box
N2 Flush
Cryo Engineering
•Foam Insulation •Vaccuum Windows•Humidity Control•N2 Flush•Thermal Radiation? P = (TLn2
4 - Tbox4 )
Muonhodoscope
Ray Tracing
y
xz
y
•MIRROR SEGMENTATION and LIGHT COLLECTION BAFFLES BEING STUDIED.
2 bounce
LIGHT COLLECTION at PMT SURFACES
z
x
y
1
2
3
4
250 MeV/cMuonsLN2
Beamspread
1 2
3 4
geo~50%
LIGHT COLLECTION OPTIMIZATION
35o
Tilting Wing Mirrors by ~35o in each quadrant- Poor Mans Focusing.
90%
PRELIMINARY EFFICIENCY SCAN
x-position (cm)
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.
Radiators and Momentum Thresholds
00 deg165
15 deg165
30 deg165
45 deg334
60 deg386
75 deg379