FRIB cryogenic system status

Casagrande, F.; Ganni, V.; Knudsen, P.; Jones, S.; Sidi‐Yekhlef, A.; Tatsumoto, Hideki; Nguyen, Christine; Fila, A.; Vargas, Gerardo; Dudley, Christie; Joseph, Nathan; Stanley, Stephen; Dixon, K.; Norton, R.; Laverdure, Nathaniel A.; Sheng, Yang

doi:10.1088/1757-899x/278/1/012102

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…At ARR1, the main hazards are radiation hazards from X-rays from the ion source and RF cavities which was mitigated with local shielding. At ARR2, Oxygen Deficiency Hazards (ODH) are introduced as cryogen was introduced in the linac tunnel [9]. It required ODH controls system for the linac tunnel to operate which continuously monitors the oxygen concentration level and activate an evacuation alarm at detection of oxygen deficiency.…”

Section: Strategic Planningmentioning

confidence: 99%

Beam Commissioning Status and Future Plans of FRIB

Ikegami

Bonofiglio

et al. 2021

Proceedings of the 3rd J-Parc Symposium (J-Parc2019)

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The Facility for Rare Isotope Beams (FRIB) is a high power heavy ion accelerator facility presently under construction and commissioning at Michigan State University in USA. Its driver linac is designed to accelerate all stable ions to energies above 200 MeV/u with beam power of up to 400 kW. For the FRIB linac, phased commissioning of 7 phases is adopted and the beam commissioning of upstream segments have been started since 2017 in parallel with the construction in downstream segments. The beam commissioning for 3 of 7 phases have been completed successfully. At the third phase of beam commissioning, four ion species of Ar, Ne, Kr, and Xe have been accelerated to a higher energy than 20 MeV/u with 15 Quarter Wave Resonator (QWR) cryomodules. At this stage, the FRIB linac has become the world's highest energy Continuous Wave (CW) hadron linac. At the next phase of beam commissioning scheduled after the readiness review in March 2020, we aim at accelerating these heavy ion beams to about 200 MeV/u using the 15 QWR cryomodules and 24 Half Wave Resonator (HWR) cryomodules. Operations for scientific users and beam power ramp up towards 400 kW are expected to start as planned in 2022. In parallel with the commissioning, research and development for future upgrades are also progressing.

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Section: Strategic Planningmentioning

confidence: 99%

Beam Commissioning Status and Future Plans of FRIB

Ikegami

Bonofiglio

et al. 2021

Proceedings of the 3rd J-Parc Symposium (J-Parc2019)

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FRIB cryogenic system status

Casagrande

Ganni

Knudsen

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The Facility for Rare Isotope Beams (FRIB) cryogenic plant has been successfully commissioned, including compressor system, 4.5 K cold box system, sub-atmospheric (2 K) cold box system, and the distribution system for two of the three linear accelerator (Linacs) segments. This plant uses the Ganni-Floating pressure process, allowing the compressor discharge and 4.5 K cold box supply pressure to automatically vary from 6 to 21 bar, without introducing additional exergetic losses to reduce the capacity (e.g., throttling turbine inlet valves, load heaters, etc.). The 2 K (31 mbar) load is supported using five stages of centrifugal compressors, housed within the sub-atmospheric cold box, which recompress the helium to 1.15 bar (and around 30 K). In 2012, FRIB assumed the responsibility, in collaboration with JLab to design and procure the sub-systems after the decision to move away from an industry supplied turn-key system. FRIB was responsible for procurement of all systems, all onsite activities, including the installation and integration of all the subsystems, development of the control systems, as well as, the integration, commissioning, and testing of each sub-system. At present this has culminated in the production of the first beam through the first Linac segment. An overview of the planning and execution of the project will be presented, which allowed meeting of scheduled goals and anticipated performance, and prevented the need to store or ‘double-handle’ any equipment.

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FRIB cryogenic system status

Cited by 2 publications

References 8 publications

Beam Commissioning Status and Future Plans of FRIB

Beam Commissioning Status and Future Plans of FRIB

FRIB cryogenic system status

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