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CEC/ICMC 2023 Abstracts & Technical Program

9–13 Jul 2023
Hawaii Convention Center
US/Hawaii timezone

Conference Management: Centennial Conferences

Session

C1Po1E: Large Scale II: Cryogenic Moderators

10 Jul 2023, 09:15
Exhibit Hall III, Level 1

Exhibit Hall III, Level 1

Conveners

C1Po1E: Large Scale II: Cryogenic Moderators

  • Li Wang (Lawrence Berkeley National Laboratory)
  • Yi Jia (FermiLab)

Presentation materials

There are no materials yet.

  1. 315. C1Po1E-01: Design of the Cryogenic Moderator System for the Second Target Station
    Jim Janney
    10/07/2023, 09:15
    Poster

    The Second Target Station (STS) at Oak Ridge National Laboratory will be a 700 kW pulsed spallation neutron source designed to provide the world’s highest brightness cold neutron beams. In order to produce the required neutron performance, two compact liquid hydrogen moderators are located adjacent to the tungsten spallation target and must be supplied with less than 20K hydrogen and a para...

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  2. 64. C1Po1E-02: Preparing the Cryogenic Moderator System (CMS) at SNS for higher beam power
    Matthew Howell (Oak Ridge National Laboratory)
    10/07/2023, 09:15
    Poster

    The Spallation Neutron Source (SNS) incorporates a 20-K helium refrigeration system to cool three circuits supplying cold hydrogen to neutron moderators. The helium refrigeration system consists of a warm compressor, oil removal, purifier, 20-K cold box, and three helium-hydrogen heat exchangers. The hydrogen loops consist of a circulator, moderator, accumulator with expandable bellows, and...

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  3. 420. C1Po1E-03: Spallation Neutron Source Reliability Improvement Projects for the Cryogenic Moderator System
    Rocky Armstrong (ORNL)
    10/07/2023, 09:15
    Poster

    The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) operates the Cryogenic Moderator System (CMS) which provides supercritical hydrogen cooling at 20K to three neutron moderators. A helium refrigerator provides 8 kW of cooling capacity to three parallel hydrogen circuits. Several projects have been completed to improve operational reliability CMS. The status of...

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  4. 164. C1Po1E-04: Development status of the in-situ measurement system for ortho-to-parahydrogen fractions for the ESS cryogenic moderator system
    Dr Hideki Tatsumoto (European Spallation Source)
    10/07/2023, 09:15
    Poster

    At the ESS target, high energy spallation neutrons are produced by impinging a 5 MW proton beam on the high-Z material, tungsten. The proton beam is pulsed with a repetition of 14 Hz and a pulse length of 2.86 ms. The moderator system consists of a water pre-moderator and two liquid hydrogen cold moderators, which are optimized to achieve a high cold neutron brightness. The neutronic...

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  5. 35. C1Po1E-05: Presentation of the commissioning and testing of the hydrogen cryostat of the cryogenic moderator system at the ZEA-1 (Forschungszentrum Jülich) for the European Spallation Source ESS
    Dr Eberhard Rosenthal (Forschungszentrum Jülich GmbH, Central Institute of Engineering, Electronics and Analytics (ZEA-1))
    10/07/2023, 09:15
    Poster

    The European Spallation Source (ESS) is a multi-disciplinary research facility based on the world’s most powerful neutron source. One key component of the target station is the cryogenic moderator system (CMS) which is designed and manufactured by the ZEA-1 of the Forschungszentrum Jülich. The cryostat of the CMS supplies liquid hydrogen in a closed loop at the temperature of around 18.5K and...

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  6. 15. C1Po1E-06: Liquid Deuterium Cold Source Concept for the NIST Neutron Source
    Mr John Jurns (National Institute of Standards and Technology)
    10/07/2023, 09:15
    Poster

    The National Institute of Standards and Technology (NIST) Center for Neutron Research (NCNR) houses an aging reactor that serves about 40% of all cold neutron research needs in the U.S. First critical in 1967, the National Bureau of Standards Reactor (NBSR) is now more than 50 years old. NCNR engineers have initiated a design effort for a replacement reactor – namely the NIST Neutron Source or...

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