Cooldown of the First Sector of the Large Hadron Collider: Comparison between Mathematical Model and Measurements

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The first 3.3-km long LHC sector (sector 7-8) was cooled down for the first time from room temperature to below 2.0 K from January to March, 2007. In this paper, the measured cool-down evolution of the sector is presented and compared with the calculated results. The discrepancies between the measur...

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Detalles Bibliográficos
Autores principales: Liu, L, Riddone, G, Serio, L, Tavian, L
Lenguaje:eng
Publicado: 2007
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1099114
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author Liu, L
Riddone, G
Serio, L
Tavian, L
author_facet Liu, L
Riddone, G
Serio, L
Tavian, L
author_sort Liu, L
collection CERN
description The first 3.3-km long LHC sector (sector 7-8) was cooled down for the first time from room temperature to below 2.0 K from January to March, 2007. In this paper, the measured cool-down evolution of the sector is presented and compared with the calculated results. The discrepancies between the measured and calculated data are analyzed. In addition, two unexpected phenomena, unbalanced cool-down between two neighboring cells supplied by one valve, and longer cool-down time with respect to the predicted generic cool-down are thoroughly and numerically analyzed.
id cern-1099114
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
record_format invenio
spelling cern-10991142023-05-31T13:24:23Zhttp://cds.cern.ch/record/1099114engLiu, LRiddone, GSerio, LTavian, LCooldown of the First Sector of the Large Hadron Collider: Comparison between Mathematical Model and MeasurementsAccelerators and Storage RingsThe first 3.3-km long LHC sector (sector 7-8) was cooled down for the first time from room temperature to below 2.0 K from January to March, 2007. In this paper, the measured cool-down evolution of the sector is presented and compared with the calculated results. The discrepancies between the measured and calculated data are analyzed. In addition, two unexpected phenomena, unbalanced cool-down between two neighboring cells supplied by one valve, and longer cool-down time with respect to the predicted generic cool-down are thoroughly and numerically analyzed.LHC-PROJECT-Report-1081CERN-LHC-PROJECT-Report-1081oai:cds.cern.ch:10991142007
spellingShingle Accelerators and Storage Rings
Liu, L
Riddone, G
Serio, L
Tavian, L
Cooldown of the First Sector of the Large Hadron Collider: Comparison between Mathematical Model and Measurements
title Cooldown of the First Sector of the Large Hadron Collider: Comparison between Mathematical Model and Measurements
title_full Cooldown of the First Sector of the Large Hadron Collider: Comparison between Mathematical Model and Measurements
title_fullStr Cooldown of the First Sector of the Large Hadron Collider: Comparison between Mathematical Model and Measurements
title_full_unstemmed Cooldown of the First Sector of the Large Hadron Collider: Comparison between Mathematical Model and Measurements
title_short Cooldown of the First Sector of the Large Hadron Collider: Comparison between Mathematical Model and Measurements
title_sort cooldown of the first sector of the large hadron collider: comparison between mathematical model and measurements
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1099114
work_keys_str_mv AT liul cooldownofthefirstsectorofthelargehadroncollidercomparisonbetweenmathematicalmodelandmeasurements
AT riddoneg cooldownofthefirstsectorofthelargehadroncollidercomparisonbetweenmathematicalmodelandmeasurements
AT seriol cooldownofthefirstsectorofthelargehadroncollidercomparisonbetweenmathematicalmodelandmeasurements
AT tavianl cooldownofthefirstsectorofthelargehadroncollidercomparisonbetweenmathematicalmodelandmeasurements

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