status of mineral oil r&d 1 st reno collaboration meeting daejung kong, knu
TRANSCRIPT
Status of Mineral Oil R&D
1st RENO Collaboration Meeting
Daejung Kong, KNU
Introduction
Liquid Scintillator R&D Environment
R&D Status
Summary
Outline
Gd (Neutron catcher )+
Liquid Scintillator ( catcher)
p
νe
e+
e-
γ(0.511MeV)
γ(0.511MeV)
n
Gd
γ
γ γ
γ
E ~ 8MeV
30μs
prompt signal
Delayed signal
• Baseline Oil
– Mineral oil, Dodecane
– LONG attenuation length
• Scintillant material
– Pseudocumene(PC), PXE, toluene
• 1st wavelength shifter
– Wavelength ≤300 nm ~350 nm
– PPO, p-Terphenyl, PBD, Naphthalene
• 2nd wavelength shifter
– Wavelength ~350 nm ~ 425 nm
– POPOP, bis-MSB
• Other wavelength shifter
– Wavelength ≤ 300 nm ~ 425 nm
– BPO
Liquid Scintillator (LSc)
Introduction
Introduction II
• 1st Stage : Setup LSc R&D Environment
– Preparation of reagent samples
– Several LSc sample tests (cosmic ray, radioactive source)
– Accumulation of other Exp. information
• 2nd Stage : Long term stability Test
– Aging Test
– Absorption, Transparency, Light yield test, Etc.,
– Different Solvent Mixtures
• 3rd Stage
– LSc + Gd mixture
– And Test …………..
03/31/06 : Mineral Oil arrived from SNU
05/12/06 : PC and stuffs arrived
05/15/06 : N2 gas arrived
05/18/06 : First LSc samples produced
05/23/06 : First LSc samples tested
05/25/06 : Acryl Box construction
05/26/06 : First LSc R&D Group Meeting
06/01/06 : Survey of M.O in Korea
06/08/06 : Collection of M.O from Korean Co.
06/28/06 : Korean M.O Test
LSc R&D History at KNU
Preparation for LSc R&D
Testing
Reagent samples Specification QuantitiesPsedocumene (PC) C6H3(CH3)3 : density:0.88 70L
PPO Scintillation grade, 99% density: 1.06 500g
Mineral Oil Paraffin oil, Heavy density 0.872 200L
POPOP(C24H16N2O2) 1,4-bis-[2(5-phenyloxazolyl)-bezene 100g
LSc R&D Equipments
• Precise valance (up to 0.001g)• Small bottles for LSc samples• N2-gas
• Radioactive source (60Co) • PMT : PHILIPS VD202B : HV=1,200V, gain~106
• Power supply : keithley 248• Pico-ammeter : keithley 485• Oscilloscope : Tectronix TDS620B
cf) Purchased from Aldrich
Sample Mixing
Sample Test
LSc R&D Procedure
LSc samples (MO+PC+PPO+POPOP)
Radio-active source (60Co)
Pico-ammeter
Cosmic Ray
Oscilloscope
LSc R&D Environment
N2 injection
PC : Toxic
LSc Mixing
3 일 후 1%PPO + Mineral Oil
Sample MO [g][%] Psudecumene PPO[%] POPOP[%] Remark
M#1 150.49 (100) 0 0 0
C#1 100(100) 0 0 0
MP#1 104.77 (99.5) 0 0.5 0 w/o N2
MP#2 100.85 (99.5) 0 0.5 0 w/ N2
MP#3 132.00 (99) 0 1 0 w/o N2
MP#4 115.24 (99) 0 1 0 w/ N2
MP#5 101.67 (98) 0 2 0 w/o N2
MP#6 101.68 (98) 0 2 0 w/ N2
MC#1 80(80) 20 0 0 w/o N2
MCP#1 80.03 (80) 20 0.02 0 w/o N2
MCP#2 80.00 (80) 20 1 0 w/ N2
MCPO#1 80.00 (80) 20 0.2 0.006 w/o N2
MCPO#2 80.00 (80) 20 1 0.008 w/o N2
Current LSc R&D Samples
Storage for LSc Samples
LSc Test Setup60Co source
Sample MO [g][%] Psudecumene PPO[%] POPOP[%] 60Co[nA]
M#1 150.49 (100) 0 0 0 18
C#1 0 100 0 0 21
MP#1 104.77 (99.5) 0 0.5 0 95
MC#1 80(80) 20 0 0 36
MCP#1 80.03 (80) 20 0.5 0 362
MCP#2 80.00 (80) 20 1 0 403
MCPO#2 80.00 (80) 20 1 0.08 458
LSc Sample Tests with 60Co
원유 (crude oil)연료유(fuel oil) B.C. asphalt
YU-base
Mineral Oil (white)
식품 (foods), 화장품 (cosmatics), Etc.,
(www.seojinchem.com)
refinement
refinement
: extract heavy metal
Mineral Oil
M.O
알리파틱 + 나프텐 + 아로마틱
1. BMP 10 : YU-base (before Mineral Oil) 82. BMP 32 : YU-base (before Mineral Oil) 83. BMP 100 : Mineral Oil (‘S-Oil’ -> P96) 5 4. BSO 17 : poly alpha olleffine : 합성유 95. BSO 400 : poly alpha olleffine : 합성유 96. KL 350(S) : White Oil ( 서진화학 ) 97. Silicone Oil (100 cSt/250C) 98. Silicone Oil (1000 cSt/250C) 89. Reference : Mineral Oil (Aldrich) 9
Viscosity 60Co Test [nA]
Comparison of Mineral Oil b/w Aldrich and Korean Company
20mg
Summary
: Setup LSc R&D Environment
The results of LSc test are consistent
Learned Know-How
1st Stage
2nd Stage : Equipment preparation
Absorp, Transp, Light yield, Atten test
Long Stability test
Back up
Double-CHOOZ KamLAND