CEC/ICMC 2023 Abstracts & Technical Program

Session

C3Or3A: Large Scale Refrigeration Operations and Commissioning

12 Jul 2023, 14:00

314

Conveners

C3Or3A: Large Scale Refrigeration Operations and Commissioning

• William Soyars
• John Weisend (ESS)

7. C3Or3A-01: [Invited] Loss of insulation vacuum tests on an EuXFEL-like cryomodule

Aman Kumar Dhillon (Deutsches Elektronen-Synchrotron DESY)

12/07/2023, 14:00

Invited Oral

Many Free Electron Lasers (FEL) are nowadays based on linear superconducting accelerators (linacs). The typical layout of such a linac consists of a number of cryomodules (CMs) arranged in strings. Each cryogenic circuit in a string is protected by safety valves (SVs) in case of failure of the system or a catastrophic event. A typical worst-case scenario considers the venting of the insulation...

142. C3Or3A-02: First results of the cryogenics operation for the LHC physics run 3 at the increased energy to 6.8 TeV

Laurent Delprat (CERN)

12/07/2023, 14:20

Contributed Oral

Back in 2018, LHC completed its run 2 physics period. Consolidation, maintenance, and upgrade activities performed during the subsequent long shutdown 2 period (LS2), based on a data-driven approach, allowed for full potential availability of the LHC cryogenics infrastructure before tackling the 2021 magnet quench training campaign, preparing the whole machine for operation at the increased...

11. C3Or3A-03: The first cooldown of SCL3 cryogenic system

Mr Sungwoon Yoon (Institute for basic science)

12/07/2023, 14:35

Contributed Oral

RAON, Rare isotope Accelerator complex for ON-line experiments, is the first superconducting linear accelerators in S. Korea. It will have three linear accelerators (LINAC), SCL1, SCL2, and SCL3. Now, construction of the SCL3, the third superconducting LINAC was finished in the middle of 2022 and the commissioning of its cryogenic system was done July, 2022. The first cooldown of the LINAC...

237. C3Or3A-04: [Invited] Commissioning of the ESS large-scale 20 K helium refrigeration system for the cryogenic moderator system

Dr Hideki Tatsumoto (European Spallation Source)

12/07/2023, 14:50

Invited Oral

At the European Spallation Source (ESS), a 5 MW beam of 2.0 GeV proton with a nominal current of 62.5 mA driven by an accelerator will strike a tungsten wheel target at a repetition of 14 Hz and a pulse length of 2.86 ms. The fast neutrons produced via spallation process are reduced to cold and thermal neutrons of a lower energy level by passing through a thermal water pre-moderator, and up to...

415. C3Or3A-05: LCLS-II Helium Refrigeration System Commissioning Results

Viswanath Ravindranath (Stanford University)

12/07/2023, 15:20

Contributed Oral

SLAC National Accelerator Laboratory has upgraded to LCLS-II, featuring a 4 GeV superconducting linear accelerator composed of 37 cryomodules and two large helium refrigeration systems with a cooling capacity of 4 kW at 2.0 K. The LCLS-II Helium Refrigeration System (HRS) consists of two compressor stations, each with a power of approximately 4.5 MW, two 4.5 K cold boxes, each with a power of...

377. C3Or3A-06: LCLS-II Linear Accelerator Cool-Down And Pump-Down

Dr Viswanath Ravindranath (Stanford University)

12/07/2023, 15:35

Contributed Oral

SLAC National Accelerator Laboratory has upgraded to LCLS-II, featuring a 4 GeV superconducting linear accelerator composed of 37 cryomodules and two large helium refrigeration systems with a cooling capacity of 4 kW at 2.0 K. LCLS-II linear accelerator was successfully cooled from ambient temperature to 4.5 K and then to its final operating temperature of 2.0 K (31 mbar). In this paper, we...