2005/10/31 Kuraray Confidential 1

About Kuraray WLS Fibers

Yuki Shiomi

Kuraray Co., Ltd.

2005/10/31 Kuraray Confidential 2

Agenda

• Kuraray Methacrylate Company• Kuraray Scintillation Material • Past experiments• Structure and Material of the Fiber• Individual Specifications spool/cut/diameter/bumps/eccentricity/ attenuation length/light output/bending loss• Production Capacity• Question and Answers

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Methacrylate Company

Core Products– Methacrylic resin for molding

• light -guide plates for liquid crystal displays (LCDs)• automobile lamp covers, and lighting fixtures

– Methacrylic synthetic marble– Methacrylic resin sheets

• signboards, displays, large tanks for aquarium facilities• front panels for televisions and computer monitors

– Opto-screens • screens for rear-projection televisions (Fresnel lens and lenticular lens)

– Stampers• CD-R, DVD± Ｒ stampers• Stampers for light -guide of LCDs

– Scintillation Materials

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Kuraray Scintillation MaterialsSCSN

SCSF

WLS

CLEAR Fiber

Description Light Output Emission Peak Att. Length Decay Time Softening PointSCSN- 61 55% Anthracene 430nm 0.92m 2SCSN- 81 50% Anthracene 440nm 1.40m 2.5ns 95℃

Description Decay Time Att. LengthColor Peak Spectra

SCSF- 78 blue 437nm 2.4ns >3.5mSCSF- 81 blue 450nm 2.8ns >4.0mSCSF- 3HF green 530nm 7 >4.5m

Emission

Description Att. Length Att. LengthColor Peak Spectra

Y- 11(200) green 476nm >3.5m >3.5mO- 2(100) orange 538nm >1.5m >4.0m

Emission

Description Att. LengthClear PS >10

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Past ExperimentsExperiment Time Customer Specification Quantity(kg)

CDF 1992 1993～ Fermilab Y- 11(250)M,0.83D. 18KEK SCSF- 3HF,0.83D.

Tsukuba Univ. Clear- PSM、他D0 1996 1998～ Fermilab Y- 11(250)M,0.835D. 14

Clear- PSM,0.835D. 740SCSF- 3HF(1500)MS,0.83D. 50

KLOE 1994 1995～ I.N.F.N. SCSF- 81,1.0D. 6000CHORUS 1993 1996、 CERN SCSF- 81,1.0D. 250

Nagoya Univ. SCSF- 78,0.495D. 120CMS 1998 1999～ CERN Y- 11(250)MS- 35,0.94D. 66

Clear- PSMS,0.94D. 130ATLAS 1999 2000～ CERN Y- 11(200)MS,1.0D. 960K2K 1997 KEK SCSF- 78M,0.692D. 560

MINOS 2000 2002～ Fermilab Y- 11(175)M,1.2D. 1200Caltech Clear- PSM,1.2D. 1600

Indiana Univ.STAR- EMC 1999 2003～ BNL CLEAR- PSM,0.9D. 150STAR- EEMC 1999 2003～ BNL CLEAR- PSM,0.9D. 110

Y- 11(200)M,0.83D. 21LHC- b 2001 2002～ CERN Y- 11(250)M,1.2D. 430

CLEAR- PSM,1.2D. 18K2K addition 2002 KEK Y- 11(200)M,1.5D. 180

OPERA 2003 2004～ IN2P3 Y- 11(175)M,1.0D. 300LHC- b 2004 CERN CLEAR- PSM,1.0D. 60

Total 13,000kg

1mm D1m=1g

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Round Fiber Square Fiber

D

Cladding

Core

Inner Cladding

T

D

Outer Cladding

CoreTo

Ti

T

SQ

Core

Cladding

T

T=3% of DNA=0.55Trapping Efficiency=4.2%

T=3%(To)+3%(Ti) of =6% of DNA=0.72Trapping Efficiency=5.4%

T=3% of SQNA=0.55Trapping Efficiency=4.2%

Structure and Material of the Fiber

[Multi cladding][Single cladding] [Single cladding]

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４５．７゜

Green Light

Blue Light

２６．７゜

Outer Cladding

Core

Single/Inner Cladding

[Y-11 Multi cladding]

Density (g/ cm)1.051.191.43Fluorinated Polymer nD=1.42

CoreMaterial Refractive Index

nD=1.59nD=1.49Single/ Inner Cladding

Outer Cladding

PolystyrenePolymethylmethacrylate

Transmission Mechanism of Multi Cladding Fiber

◆Multi cladding fiber has 50% higher light yield than single cladding fiber

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900mm300mm

fiber D >=0.6 large spoolfiber D <=0.5 small spool

about 1600g of fiber/spool

Individual Specifications

Spool

Fiber D >=0.8Cut length　　 0.5m to 5m

10,000km of 1.0mm D fibers - 6,250 spools of 1600m +- several 100m

Cut

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Diameter

Laser Diameter Apparutus(feed back control)

Laser Diameter Apparutus(final measurent)

Measurement frequency 50,000 ptsAverage +- 1% of DTolerance 3б/D=2.5%

Individual Specifications

1.0mm D fiber Average +-0.01 Standard Deviation RMS=<0.007mm

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Bumps

over +-2% of average D

Number of 2% bumps =< 50 per kmNumber of 4% bumps =< 15 per km

The number, position, diameter, length will be specified.Making a red mark on all bumps is possible.

Individual Specifications

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Eccentricity

(Dmax-Dmin)/(Dmax-Dmin)<1.5%[(Dmax-Dmin)/<3%]

Measure 2 points by micrometer

Individual Specifications

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Test Fiber HAMAMATSU Type R647(Bi al kari Photocathode)

Si - PDPhotod

El ect roMagnet i c Shut ter

Bl ue LED

PMT

Pi n Hol e

PC

(For f eedback cont rol t o LED)

Pr i nter

Bl ack BOX

Steppi ng Moter

Movi ng Li near Stage

Li near Gui de

(measures every 10 cm) 3m

2 sample fibers of 3m for every spool

sample fiber

Attenuation Length and Light Output (Measurement Method)

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Attenuation Length

0

1

2

3

4

5

6

7

8

0 50 100 150 200 250 300

Distance(cm)

PM

T V

olta

ge(m

V)

Y- 11(60)Y- 11(100)Y- 11(150)Y- 11(250)Y- 11(400)

example:Y-11 1.0D., non-S type with different concentrations

Individual Specifications

Y-11(200) A.L. of all fibers > 3.5The A.L. of every sample throughout the whole order RMS/Ave =< 10%

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Individual Specifications

Light Output

The L.O. at the 140cm of every sample throughout the whole order RMS/Ave=<7%

The L.O. at the 285cm of every sample throughout the whole order RMS/Ave=<15%

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10m long fiber test apparatus (measure 21 points)

All the values of the 21 points of the samples measured >=85%

MINOS Measurement Method (A. L. and Light Output)

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①Halogen Lump House(non monochromated light) ： ANRITSU ＧＡ－９２２Ａ②Power Meter ： ANRITSU ＭＬ９１０Ａ③Si-PD detector ： ANRITSU ＭＡ９８０２Ａ

2 sample fibers of 3m for every spool

Bending Loss (Measurement Method)

②

①FC Connector

Sample Fiber (3 m)

Black Box

③

100φdrum1 turn

100φ

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Bending LossBending Loss of all the samples=<5%

The Minimum bending diameter we recommend on safety side and long term reliability

Type mmφ２ 1mmφ 0.8mmφ 0.5mmφS Type 200mm 100mm 80mm 50mm

Non- S Type 400mm 200mm 160mm 100mm*S type – stronger against cracking, but has 10% shorter A.L.

Individual Specifications

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Production CapacityKuraray’s capacity of producing 10,000km of 1mm D fiber

Current capacity 74 months

Equipment capacity 26 months

The best we can do 16 months

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Yuki Shiomi (sales)Yuuki_Shiomi@kuraray.co.jp

Contact Address

Osamu Shinji (technical)Osamu_Shinji@kuraray.co.jp