horn –current design- 0.58 h 0.46 h 0.48 h weight : ????
TRANSCRIPT
1510
360
900
1400
25002000
Horn –current design-
0.58 H 0.46 H 0.48 H
Weight : ????
Comparison BNL type v.s. ‘New horn’
BNL type
New horn
Strip Line
Maybe 4 strip lines for one horn.
(c.f. K2K 300mm wide 15mm thick aluminum plates.)
Heat Load from Radiation
Graphite =1.8g/cm3
Water t=5mm
Al case t=1.5mm
Inner cond.
Al t=3mm
In total,
20kJ/3.3E14 protons = 6 kW @ 0.3Hz
(Joule’s heat 13kJ/ms)
cf. K2K heat load in the target from the current
= 1.4 kW
(surface area ~x 7)
In the graphite target, 57kJ/3.3E14 protons in total
30mm
52mm
t~19o
ZR
ZR
前提• 0.75MW 対応を基本とし、 4MW へ拡張可能とする。
• ホーン、ターゲットシステムは、 K-arena にならい上から釣る。
• ホーン、ターゲットの交換は完全リモートとする。
• ターゲット、ホーン、ビームの方向は、 Off-Axis beam 2°~3° に対応して変えられなければならない。 ( ただし変更は、しばしば行われるものではなく、 <1/yr 程度。 )
•ホーン、ターゲットの修理をするならばホットラボが必要である。
Decay Volume cooling の機械室がターゲット・ステーション建屋内に必要
配管 25A 40 本 ( ただし 0.75MW 時に使うのは、この一部 )
110m3/h, 2.9m3 for 4MW
K2K target station
Iron
Concrete
Soil
BeamSK
Target & 1st Horn
Transformer1,2
Top view
Stripline-1Stripline-2
Cave size (W3.7m, H3.8m, L17m)Cave – Radioactive air is closed simplify.Both transformers is set inside beam line.Stripline-1 : 9.3m, (Cross section t15mmx320mm)Stripline-2 :12.0m, (Cross section t15mmx320mm)
17m
2.15
3.7m
2
.15
Rail, 5-ton crane
Decay Pipe
Y. Yamanoi –KEK February 4, 2003
2nd Horn
C K2K Beam Channel G
Target Station –Top View-(ターゲット・ステーション地下レベル)
Z'
1.5
A
A
B
B
FV2
1.00 2.00
FV2
放射化物保管室
3.00
1.40
A
Z'
A
2.55
0.50
1.50 1.25
2.30
0.40
0.20
0.45
3.60
1.65
Target Station –Side View-
断面図
TP-1.1m
TP+11.8m(0.244Sv/ h)
TS上屋
土盛り
0.07Sv/ h for 1W/ m line
=FL=TP+10.8mGL
5.00
1.00
6.50
2.20
12.0
02.
523.
67
2.59
3.50
2.00
A B C D E F
TP-1.1m
5.50
10.00
0.201.
9
A
A
B
B13.80
空隙(サービスエリア)
5.00
1.00
2.20
1.50
1.25
1.65
0.70
2.00
TS cooling
air
r1
r2
1
2log
2 r
rQT
Cylindrical model
iron
( 熱 Q が r1 の所で発生したと仮定 )
r1~1m
KW/m80
W/m103.1)(20
1
50GeV
17GeVMW75.0
Fe
4
m
Q
mr@r
mrrrT
21229
112@182log26
mr@r
mrrrT
11292
5.012@552log135
For 4MW,
To protect horns, <80o is preferable.
Upgrade to 4MW
Al 冷却
3.5m
0.2m
0.26MW
horn
240
2]m[2.0][20
]W[1026.0
]W/mK[240
]m[5.3
2
1
2
1
6
m
A
WLT
アルミ冷却と空調の併用で
なんとかならないか?
ISAC 風?
TP-1.1m
TP+11.8m(0.244Sv/ h)
土盛り
=FL=TP+10.8mGL
2.20
10.0
0
2.59
5.50
10.00
0.201.
9
A
A
B
B空隙(サービスエリア)
5.00
素朴な疑問 / 問題完全リモートにするならば、 Al 板は、不必要?
放射線、空気閉じ込め、熱伝導体
完全リモートにするならば、 He は、不必要?
ホーンの捨て場はこれだけで十分か?
3mのバスバーごと捨てると厳しい?
コスト度外視メンテナンス・シナリオ1年に1度のメンテナンス→ホットラボが欲しい。
TRIUMF ISAC Target Station
NuMI Target HallBeam line is below floor level
Horn+Module in transit
Stripline Concrete Cover
Module Support Beams Horn Shielding Module Horn
Steel Shielding Air Cooling PassageConcrete Shielding
Temporary Stackup of removed shieldingSteel from module middle Concrete from over horn
Beam passageway (chase) is 1.2 m wide x 1.3 high
NuMI by J.Hylen
Target and Horn ModulesNuMI module = 2 AP0 modules + cross-bracing walls
Water tank
Stripline
RemoteStriplineClamp
Baffle
Target
Target/Baffle Module Horn 1 Module
Horn 1
25 cm wide, 2 m deep Steel endwalls with positioning, water, electric feedthroughs
Motor drives for transverse and vertical motion of carrier relative to module
Carrier
Target moves relative to carrier for insertion into horn for L.E. beam
NuMI by J.Hylen
NuMI Target HallNuMI by J.Hylen
Lifting Tablein Hot Cell
Push horn or target up into module remotely – 5 degrees of motion
Both tables move together along beam direction
Each table has independent vertical and transverse motion
NuMI by J.Hylen
Hot Handling Work CellMount/dismount components on modules
Railing
Module
Lead-glass window
Horn
Remote lifting table
Concrete walls
Horn mechanical connection to module, remote stripline clamp, waterline connection to horn, electrical connection to horn are all done through the module by person on top of hot cell
3 m
NuMI by J.Hylen
Lifting Fixture for ModuleRemotely change pick point to match center of gravity
Teeth disengaged to enable movement of hook relative to lifting fixture frame
Teeth engaged at center of gravity for horn 1 pick
Lifting fixture box frame
Module hook
Pins to engage module hooks
NuMI by J.Hylen
Hot Handling Dosefor hot horn replacement
Source DescriptionDose Rate on Contact (mrem/hr) (30 Day, 1 Day) (30 Day, 7 Day) (252 Day, 1 Day) (252 Day, 7 Day)
Walls, Floor, & Ceiling 0 0.05 5.50E-03 6.13E-02 1.58E-02
Bottom of Horn Module 213,083 100000 6.14E+04 2.55E+05 2.13E+05
Top of Horn Module 2 1 6.14E-01 2.55E+00 2.13E+00
Horn Module Connection Region 2 1 6.14E-01 2.55E+00 2.13E+00
Inside Horn Chase (Steal) 66 31 1.90E+01 7.89E+01 6.61E+01
Face of Unremoved H-Blocks 6 20 2.20E+00 2.45E+01 6.34E+00
Horn (Side View) 19,399 600000 7.04E+03 6.13E+05 1.94E+04
Horn (Upstream View) 25,865 800000 9.38E+03 8.18E+05 2.59E+04
Horn (Downstream View) 38,797 1200000 1.41E+04 1.23E+06 3.88E+04
Bottom of T-Blocks From Horn Module 213,083 100000 6.14E+04 2.55E+05 2.13E+05
Top of T-Blocks From Horn Module 2 1 6.14E-01 2.55E+00 2.13E+00
Concrete H-Block Shield Wall #1 3 10 1.10E+00 1.23E+01 3.17E+00
Concrete H-Block Shield Wall #2 3 10 1.10E+00 1.23E+01 3.17E+00Single Wall Reflection From Chase 0 0.01 6.14E-03 2.55E-02 2.13E-02
Material In Morgue 0 NA NA NA NA
Top of T-Blocks in Target Module 2 1 6.14E-01 2.55E+00 2.13E+00Top of Target Module 2 1 6.14E-01 2.55E+00 2.13E+00
Engineer
HORN WILL BE REPAIRED
HORN WILL BE DISCARDED 2.47E-02
HORN WILL BE REPAIRED
HORN WILL BE DISCARDED
0
6.82E-02
Technician #1 Radiation Safety Official
Dose Per Person (mrem)
0
0
0
0
00
0
RSO Measured
6.84E+00
Total Dose For All Personnel (mrem)
Technician #2
1.22E+001.41E+00
Crane Operator
4.13E+00
0
0
0
0NA
00
0
0
Hide Repair Doses
Note 1 sievert = 100 rem
NuMI by J.Hylen