Property TK temperature PMPa pressure lvJkg latent heat

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キセノンの物性（沸点、潜熱、密度） Property T(K): temperature P(MPa): pressure lv(J/kg): latent heat (liquid)X 103 ls(J/kg): latent heat

キセノンの物性（沸点、潜熱、密度） Property T(K): temperature P(MPa): pressure lv(J/kg): latent heat (liquid)X 103 ls(J/kg): latent heat (solid) X 103 Cp(J/kg. K): specific heat X 103 (kg/m 3): density (W/m. K): thermal conductivity Triple point LXe (saturated) ● 164. 78 0. 100 95. 8 ● 1. 2 0. 3484 2947 ● 0. 108 161. 36 K 0. 0815 MPa ・融解熱が極めて小さい→固体になりやすい →固体では検出器にならず、PMT破損の恐れ GXe (saturated) LN 2 (saturated) 164. 78 0. 100 --0. 1734 9. 883 0. 0034 (173 K) 77. 35 0. 1013 199. 1 28. 4 2. 03 804 0. 1398 63. 148 K 0. 0125 MPa

First xenon liquefaction by a pulse tube cryocooler ● 14 W@165 K pulse tube

First xenon liquefaction by a pulse tube cryocooler ● 14 W@165 K pulse tube cryocooler For xenon property research ● Density, Boiling Heat transfer ● Refractive index at 174 nm VUV light

MEG Detector n n n Liquid xenon photon detector COBRA spectrometer – Magnet, DC,

MEG Detector n n n Liquid xenon photon detector COBRA spectrometer – Magnet, DC, TC All detector waveforms are recorded.

MEG LXe Detector -800 liter liquid xenon with 1000 PMTs -Impurity level of H

MEG LXe Detector -800 liter liquid xenon with 1000 PMTs -Impurity level of H 2 O to ~10 ppb

Xe flow scheme for MEG system 1000 L低温容器 静かな冷却 液相循環純化

Xe flow scheme for MEG system 1000 L低温容器 静かな冷却 液相循環純化

Large Prototype LXe Detector LXe volume : 120 L PMT: ~250 PT cryocooler for

Large Prototype LXe Detector LXe volume : 120 L PMT: ~250 PT cryocooler for LN 2 free operation

Technology Transfer to Iwatani -Cooling power, Reliability…

Technology Transfer to Iwatani -Cooling power, Reliability…

Cryocooler installed in MEG large prototype calorimeter Buffer Tank Rotary valve

Cryocooler installed in MEG large prototype calorimeter Buffer Tank Rotary valve

42 -day operation scheme of large prototype calorimeter by cryocooler -2004. 9. 18~21 Pre-cooling

42 -day operation scheme of large prototype calorimeter by cryocooler -2004. 9. 18~21 Pre-cooling (72 hrs) -2004. 9. 21~24 Liquefaction (79 hrs, 1. 5 L/hr) -2004. 9. 24~ Circulation (1. 5 L/hr rate) -2004. 10. 30 Xenon recovery

LN-free operation MEG calorimeter ~Monitor panel~ LXe temperatures GXe circulation flow CH heater power

LN-free operation MEG calorimeter ~Monitor panel~ LXe temperatures GXe circulation flow CH heater power LXe inner pressure

Pressure stability of LXe during LN-free operation Pressure in LXe calorimeter 20 k. Pa

Pressure stability of LXe during LN-free operation Pressure in LXe calorimeter 20 k. Pa Data at 800 hours elapsed after the pre-cooling started

Temperature stability of LXe during LN-free operation LXe temperature 1 K Cryocooler cold end

Temperature stability of LXe during LN-free operation LXe temperature 1 K Cryocooler cold end temperature Data at 800 hours elapsed after the pre-cooling started

液体キセノン用液相ポンプ -Barber Nichols -Pin = 0. 1014 MPa -Pout = 0. 3014 MPa -Top

液体キセノン用液相ポンプ -Barber Nichols -Pin = 0. 1014 MPa -Pout = 0. 3014 MPa -Top = 165 K -Flow rate = 100 L/h -Rotating speed = 3175 rpm

液相ポンプ試験のセットアップ n Pump specification Δp=0. 2 MPa u 100 liter/hour u 53 Hz operation

液相ポンプ試験のセットアップ n Pump specification Δp=0. 2 MPa u 100 liter/hour u 53 Hz operation u

Xe flow scheme for MEG system １０００ LLXe容器

Xe flow scheme for MEG system １０００ LLXe容器

Application to XENON detector -XENON-1 T design modular -Target cooled by shield LXe at

Application to XENON detector -XENON-1 T design modular -Target cooled by shield LXe at ~ 165 K by cryocooler

Application to XENON detector ~detailed setup of isolation flange~ Pulse tube cryocooler Re-condenser LXe

Application to XENON detector ~detailed setup of isolation flange~ Pulse tube cryocooler Re-condenser LXe chamber

Application to XENON detector

Application to XENON detector

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