01.07.2004 Collimator 01.07.2004 Collimator revue revue A. Bertarelli - S. Calatroni - M. M A. Bertarelli - S. Calatroni - M. M ayer - R. Perret TS/MME ayer - R. Perret TS/MME 1 Collimator Test-Bench Collimator Test-Bench Heating Test Heating Test Primary Goals Primary Goals – To measure the thermal impedance between To measure the thermal impedance between graphite and the cooling plate as a function graphite and the cooling plate as a function of the applied pressure of the applied pressure – To verify the temperature distribution in the To verify the temperature distribution in the collimator jaw baseline design (graphite, collimator jaw baseline design (graphite, copper cooling plate, s.steel support copper cooling plate, s.steel support structure) and compare to simulations structure) and compare to simulations – To identify whether graphite dust is produced To identify whether graphite dust is produced after several bakeout cycles at 250 ºC after several bakeout cycles at 250 ºC Secondary Goal Secondary Goal – To measure outgassing of graphite in the real To measure outgassing of graphite in the real configuration configuration
Primary Goals To measure the thermal impedance between graphite and the cooling plate as a function of the applied pressure To verify the temperature distribution in the collimator jaw baseline design (graphite, copper cooling plate, s.steel support structure) and compare to simulations - PowerPoint PPT Presentation
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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
A. Bertarelli - S. Calatroni - M. Mayer - R. PA. Bertarelli - S. Calatroni - M. Mayer - R. Perret TS/MMEerret TS/MME
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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