CEC-ICMC 2017 - Abstracts, Timetable and Presentations

Session

C2OrD - Large Scale Refrigeration and Liquefaction III

C2OrD

11 Jul 2017, 15:00

Monona Terrace Community and Convention Center

Conveners

C2OrD - Large Scale Refrigeration and Liquefaction III

• Laurent Tavian (CERN)
• Brian DeGraff (ORNL)

129. [Invited] Novel concept of 60-120 kW refrigerator - Part 2: 4-80K box

Sergiy Putselyk

11/07/2017, 15:00

Invited Oral Presentation

In order to cover the required cryogenic load, several cryogenic groups, e.g. at CERN, ITER, JLab, SLAC, have to install several refrigerators with maximal power capacities each. As an alternative, development of larger refrigerators up to 120kW power could be an alternative to the installation of several “small” ones. In the present paper, the novel concept of 60÷120 kW refrigerator is...

245. Towards the conceptual design of the cryogenic system of the Future Circular Collider (FCC)

Mr Laurent Tavian (CERN)

11/07/2017, 15:30

Contributed Oral Presentation

Following the update of the European strategy in particle physics, CERN has undertaken an international study of possible future circular colliders beyond the LHC. The study considers several options for very high-energy hadron-hadron, electron-positron and hadron-electron colliders. From the cryogenics point of view, the most challenging option is the hadron-hadron collider (FCC-hh) for which...

264. Main improvements of LHC Cryogenics Operation during Run 2 (2015-2018)

Mr Laurent Delprat (CERN)

11/07/2017, 15:45

Contributed Oral Presentation

After the successful Run 1 (2010-2012), the LHC entered its first Long Shutdown period (LS1, 2013-2014). During LS1 the LHC cryogenic system went under a complete maintenance and consolidation program. The LHC resumed operation in 2015 with an increased beam energy from 4 TeV to 6.5 TeV. Prior to the new physics Run 2 (2015-2018), the LHC was progressively cooled down from ambient to the 1.9 K...

252. Refrigeration assessment of the existing cryogenic plants for the high luminosity upgrade of the Large Hadron Collider (LHC)

Daniel Alexander Berkowitz Zamora (CERN)

11/07/2017, 16:00

Contributed Oral Presentation

The cryogenic system of the LHC will be upgraded by 2025 to comply with a considerable increase of beam induced heat loads deriving from higher beam currents and peak luminosity levels from the High-Luminosity LHC. The current baseline foresees a modified sectorization scheme with three additional cryogenic plants dedicated to cool the insertions at LHC’s points 1, 4 and 5, reducing the...

195. Commissioning and first cooldown of XFEL linac

Dr Bernd Petersen (DESY)

11/07/2017, 16:15

Contributed Oral Presentation

Commissioning the XFEL cryogenic system has begun in the middle of 2015 by putting into operation components necessary for operating the XFEL injector. The injector was cooled down to 2K at the end of 2015 and operated - including beam commissioning - until August 2016. After warming up of the whole XFEL cryogenic system, commissioning remaining components including the 1.5 km long...

319. First operation of the XFEL linac with the 2K cryogenic system

Dr Tobias Schnautz (DESY)

11/07/2017, 16:30

Contributed Oral Presentation

The RF operation of the about 800 superconducting 1.3GHz 9-cell cavities of the XFEL linac requires helium II bath cooling at 2K, corresponding to a vapor pressure of 3100 Pa. After the first cool-down of the XFEL linac to 4K in December, 27th,2016 the operation of the 2K cryogenic system was started in January, 2th 2017. The 2K cryogenic system consist of a 4-stage set of cold compressors to...