Collimator Test-Bench Heating Test
description
Transcript of Collimator Test-Bench Heating Test
01.07.2004 Collimator rev01.07.2004 Collimator revueue
A. Bertarelli - S. Calatroni - M. Mayer - R. PA. Bertarelli - S. Calatroni - M. Mayer - R. Perret TS/MMEerret TS/MME
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Collimator Test-Bench Collimator Test-Bench Heating TestHeating Test
Primary GoalsPrimary Goals– To measure the thermal impedance between To measure the thermal impedance between
graphite and the cooling plate as a function of graphite and the cooling plate as a function of the applied pressurethe applied pressure
– To verify the temperature distribution in the To verify the temperature distribution in the collimator jaw baseline design (graphite, copper collimator jaw baseline design (graphite, copper cooling plate, s.steel support structure) and cooling plate, s.steel support structure) and compare to simulationscompare to simulations
– To identify whether graphite dust is produced To identify whether graphite dust is produced after several bakeout cycles at 250 ºCafter several bakeout cycles at 250 ºC
Secondary GoalSecondary Goal– To measure outgassing of graphite in the real To measure outgassing of graphite in the real
configurationconfiguration
01.07.2004 Collimator rev01.07.2004 Collimator revueue
A. Bertarelli - S. Calatroni - M. Mayer - R. PA. Bertarelli - S. Calatroni - M. Mayer - R. Perret TS/MMEerret TS/MME
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Experimental set-upExperimental set-up
01.07.2004 Collimator rev01.07.2004 Collimator revueue
A. Bertarelli - S. Calatroni - M. Mayer - R. PA. Bertarelli - S. Calatroni - M. Mayer - R. Perret TS/MMEerret TS/MME
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Heating resistanc
e
Cooling channels
Springs
AC150 C-C
composite
Experimental set-upExperimental set-up
01.07.2004 Collimator rev01.07.2004 Collimator revueue
A. Bertarelli - S. Calatroni - M. Mayer - R. PA. Bertarelli - S. Calatroni - M. Mayer - R. Perret TS/MMEerret TS/MME
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2 x 5 lt/min, 6 Kg/m2 x 5 lt/min, 6 Kg/m22 spring spring loadload
Measured temperature Measured temperature increaseincrease84±1 ºC
~13 ºC
2.9±0.3 ºC
5.3±0.3 ºC
6.7±0.3 ºC
10.1±0.3 ºC 200±0.4 ºC
~51 ºC
9.7±0.3 ºC
16.9±0.3 ºC
21.4±0.3 ºC
30.4±0.4 ºC
1500 W 4000 W
01.07.2004 Collimator rev01.07.2004 Collimator revueue
A. Bertarelli - S. Calatroni - M. Mayer - R. PA. Bertarelli - S. Calatroni - M. Mayer - R. Perret TS/MMEerret TS/MME
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Estimation of thermal Estimation of thermal impedanceimpedance
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1000 1500 2000 2500 3000 3500 4000 4500 5000
T
Gra
ph
ite
- C
op
per
[K
]
Applied Power [W]
Global thermal Global thermal impedance impedance Cu/AC150 C-CCu/AC150 C-C~ 8800 W m~ 8800 W m-2-2KK-1-1
01.07.2004 Collimator rev01.07.2004 Collimator revueue
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Thermal impedanceCu / Carbon-Carbon
Spring loadSpring load
2.4 Kg/cm2.4 Kg/cm22
Spring loadSpring load
6 Kg/cm6 Kg/cm22
Experiment Experiment (approximate (approximate global value)global value)
~ 5400 W m~ 5400 W m-2-2KK--
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~ 8800 W m~ 8800 W m-2-2KK--
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Estimation of thermal Estimation of thermal impedanceimpedance
01.07.2004 Collimator rev01.07.2004 Collimator revueue
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Temperature distribution Temperature distribution Comparison experiment - Comparison experiment -
modelmodel
31.1º
24.9º
21.9º
17.8º
30.8º
24.0º
21.3º
17.4º
Absolute temperatures with water inlet at 11 ºC, 2x5 lt/min, 2500W* E. Marotta, S. Mazzuca, J. Norley, Electronics Cooling August 2002* E. Marotta, S. Mazzuca, J. Norley, Electronics Cooling August 2002
Experiment Model *
01.07.2004 Collimator rev01.07.2004 Collimator revueue
A. Bertarelli - S. Calatroni - M. Mayer - R. PA. Bertarelli - S. Calatroni - M. Mayer - R. Perret TS/MMEerret TS/MME
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2000 W , 6 Kg/m2000 W , 6 Kg/m22 spring load spring load Change of water flowChange of water flow
109±2 ºC
~26 ºC
9±1.1 ºC
12.6±1.1 ºC
14.8±1.1 ºC
19.6±1.1 ºC104±2 ºC
~20 ºC
4.7±1.1 ºC
8.3±1.1 ºC
10.6±1.1 ºC
15.3±1.1 ºC
2 x 3 lt/min, Twater=5.6±0.4 ºC
2 x 5 lt/min, Twater=2.6±0.4 ºC