| Preprint | |
| Report number | LHC-PROJECT-Report-1081 ; CERN-LHC-PROJECT-Report-1081 |
| Title | Cooldown of the First Sector of the Large Hadron Collider : Comparison between Mathematical Model and Measurements |
| Author(s) | Liu, L ; Riddone, G ; Serio, L ; Tavian, L |
| Affiliation | (CERN) ; (Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China) |
| Publication | 2007 |
| Imprint | Mar 2007 |
| Number of pages | 9 |
| Note | Manuscript not submitted to the AIP proceedings |
| Presented at | Conference on Cryogenic Engineering and Cryogenic Materials, Chattanooga, TN, USA, 16 - 20 Jul 2007 |
| Subject category | Accelerators and Storage Rings |
| Accelerator/Facility, Experiment | CERN LHC |
| Abstract | 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. |
| Submitted by | [email protected] |
Journalen skapades 2008-04-14, och modifierades senast 2023-05-31
