Explanipedia

Progress towards the Facility for Rare Isotope Beams Open

J. Wei, D. Arenius, Nathan Bultman, F. Casagrande, Chris Compton , et al. · 2023

Muon-based facilities offer a unique potential to provide capabilities at both the Intensity Frontier with Neutrino Factories and the Energy Frontier with Muon Colliders ranging from the Higgs energy to the multi-TeV energy range. They rel…

Accelerator commissioning and rare isotope identification at the Facility for Rare Isotope Beams Open

J. Wei, Hiroyuki Ao, B. Arend, Steven Beher, G. Bollen , et al. · 2022

In 2008, Michigan State University was selected to establish the Facility for Rare Isotope Beams (FRIB). Construction of the FRIB accelerator was completed in January 2022. Phased accelerator commissioning with heavy ion beams started in 2…

Developments Towards FRIB Upgrade to 400 MeV/u for Heaviest Uranium Ions Open

K. McGee, Kyle Elliott, Grigory Eremeev, Fumio Furuta, Andrei Ganshyn , et al. · 2022

High-Q₀ medium-velocity (beta opt = 0.6) 5-cell elliptical cavities for superconducting linacs are critical technology for advancing current and future projects such as the Proton Improvement Plan II linac and the proposed energy upgrade o…

Medium-velocity superconducting cavity for high accelerating gradient continuous-wave hadron linear accelerators Open

K. McGee, S. Kim, Kyle Elliott, Andrei Ganshyn, W. Hartung , et al. · 2021

We present the first rf studies of the medium-beta superconducting radio frequency (SRF) elliptical cavities designed for Michigan State University's Facility for Rare Isotope Beams (FRIB) energy upgrade linac. The proposed energy upgrade …

Certification testing of production superconducting quarter-wave and half-wave resonators for FRIB Open

Cong Zhang, W. Hartung, John Popielarski, Kenji Saito, Sang-Hoon Kim , et al. · 2021

Beam Commissioning Status and Future Plans of FRIB Open

Masanori Ikegami, Hiroyuki Ao, Jon Bonofiglio, Nathan Bultman, F. Casagrande , et al. · 2021

Design and Implementation of a Production Model Bias Tee Open

T. Larter, Eleazar Gutierrez, Sanghoon Kim, Dan Morris, John Popielarski , et al. · 2021

The Facility for Rare Isotope Beams (FRIB) includes two types of half wave SC resonators (HWR) operating at 322MHz. The fundamental power couplers used to transmit RF power into the HWRs commonly suffer from multipacting which can result i…

Commissioning Status of the Linac for the Facility for Rare Isotope Beams Open

S. Lidia, Hiroyuki Ao, B.K. Barnes, R. Bennett, E. Bernal-Ruiz , et al. · 2020

The Facility for Rare Isotope Beams will be completed in late 2021. Here, we report here on the current efforts to commission the first stages of the 200-MeV/u superconducting, continuous wave heavy-ion linac. The statuses of the cryogenic…

Advances of the FRIB project Open

J. Wei, Hiroyuki Ao, Steven Beher, Nathan Bultman, F. Casagrande , et al. · 2019

The Facility for Rare Isotope Beams (FRIB) Project has entered the phase of beam commissioning starting from the room-temperature front end and the superconducting linac segment of first 15 cryomodules. With the newly commissioned helium r…

FRIB Solenoid Package in Cryomodule and Local Magnetic Shield Open

Kenji Saito, Hiroyuki Ao, Brian M. Bird, Ryan Bliton, Nathan Bultman , et al. · 2019

FRIB cryomodule design has a feature: solenoid package(s) and local magnetic shields in the cryomodule. In this design, exposing SRF cavities to a very strong fringe field from the solenoid is concerned. A tangled issue between solenoid pa…

Experience and Lessons in FRIB Superconducting Quarter-Wave Resonator Commissioning Open

Sang‐Hoon Kim, Hiroyuki Ao, F. Casagrande, Wei Chang, Chris Compton , et al. · 2019

The superconducting (SC) linear accelerator (linac) for the Facility for Rare Isotope Beams (FRIB) has one quarter-wave resonator (QWR) segment and two half-wave resonator (HWR) segments. The first linac segment (LS1) contains twelve β = 0…

FRIB Driver Linac Integration to be ready for Phased Beam Commissioning Open

Hiroyuki Ao, Steven Beher, Nathan Bultman, F. Casagrande, Chris Compton , et al. · 2019

The driver linac for Facility for Rare Isotope Beams (FRIB) will accelerate all stable ion beams from proton to uranium beyond 200 MeV/u with beam powers up to 400 kW. The linac now consists of 10⁴ superconducting quarter-wave resonators (…

FRIBCavity and Cryomodule Performance, Comparison with the Design and Lessons Learned Open

Samuel Miller, Hiroyuki Ao, Brian M. Bird, B. W. Bullock, Nathan Bultman , et al. · 2019

The superconducting driver linac for the Facility for Rare Isotope Beams (FRIB) requires the production of 46 cryomodules. Design is complete on all six cryomodule types which utilize four superconducting radio frequency (SRF) cavity desig…

The Facility for Rare Isotope Beams Superconducting Cavity Production Status and Findings Concerning Surface Defects Open

Chris Compton, Hiroyuki Ao, Joseph Asciutto, Jim Craft, Kyle Elliott , et al. · 2019

The Facility for Rare Isotope Beams (FRIB), located on the campus of Michigan State University (MSU) will require 324 Superconducting Radio Frequency (SRF) cavities in the driver linac. Four types of cavities of two classes, quarter-wave (…

Performance of FRIB Production Quarter-Wave and Half-Wave Resonators in Dewar Certification Tests Open

W. Hartung, Wei Chang, Sang-Hoon Kim, D. Norton, John Popielarski , et al. · 2019

The Facility for Rare Isotope Beams (FRIB) is under construction at Michigan State University (MSU). The FRIB superconducting driver linac will accelerate ion beams to 200 MeV per nucleon. The driver linac requires 10⁴ quarter-wave resonat…

The FRIB SC-Linac - Installation and Phased Commissioning Open

J. Wei, Hiroyuki Ao, Steven Beher, Brian M. Bird, Nathan Bultman , et al. · 2019

The Facility for Rare Isotope Beams (FRIB) superconducting (SC) driver linac is designed to accelerate all stable ions including uranium to energies above 200 MeV/u primarily with 46 cryomodules containing 324 quarter-wave resonators (QWR)…

Installation Progress on FRIB β=0.041 Cryomodules Toward Beam Commissioning Open

Hiroyuki Ao, Brian M. Bird, Nathan Bultman, F. Casagrande, Chris Compton , et al. · 2018

The Facility for Rare Isotope Beams (FRIB) driver linac is to accelerate all the stable ion beams from proton to uranium beyond 200 MeV/u with beam powers up to 400 kW, which will be the first large-scale, CW SRF ion linac. The beam commis…

RF System for FRIB Accelerator Open

Dan Morris, John Brandon, Nathan Bultman, Kelly Davidson, A. Facco , et al. · 2018

The RF system of the FRIB driver accelerator includes solid state amplifiers up to 18 kW operating at frequencies from 80.5 MHz to 322 MHz. Much higher power is required for the normal conducting RFQ, ~100 kW, and it is based on vacuum tub…

Design of β=0.65, 5 Cells, 644 MHz Elliptical Cavity for FRIB Upgrade Open

Mengxin Xu, Chris Compton, Crispin Contreras-Martinez, I. Gonin, W. Hartung , et al. · 2018

The superconducting (SC) linac of the Facility for Rare Isotope Beams (FRIB) under construction will deliver 200 MeV/u, 400 kW beam to the target for producing rare isotopes at Michigan State of University (MSU). For further beam energy up…

FRIB Project Status and Beam Instrumentation Challenges Open

J. Wei, P. N. Ostroumov, Leslie Hodges, Shelly Jones, Thomas Russo , et al. · 2018

With an average beam power two orders of magnitude higher than operating heavy-ion facilities, the Facility for Rare Isotope Beams (FRIB) stands at the power frontier of the accelerator family. This report summarizes the status of design, …

Production Status of Superconducting Cryomodules for the Facility for Rare Isotope Beams Open

Chris Compton, Hiroyuki Ao, Joseph Asciutto, Brian M. Bird, W. Hartung , et al. · 2017

The Facility for Rare Isotope Beams (FRIB) is an SRF accelerator project in full production at Michigan State University (MSU). With the civil construction nearly complete, the installation of accelerator equipment into the tunnel has take…

Performance Testing of FRIB Early Series Cryomodules Open

John Popielarski, Chris Compton, Andrei Ganshyn, W. Hartung, Didi Luo , et al. · 2017

Construction of a new accelerator for nuclear physics research, the Facility for Rare Isotope Beams (FRIB), is underway at Michigan State University (MSU). The FRIB linac will use superconducting resonators at an operating temperature of 2…

Progress of FRIB SRF Production Open

Ting Xu, Hiroyuki Ao, Brian M. Bird, Nathan Bultman, F. Casagrande , et al. · 2017

The Facility for Rare Isotope Beams (FRIB), under construction at Michigan State University, will utilize a driver linac to accelerate stable ion beams from protons to uranium up to energies of >200 MeV per nucleon with a beam power of up …

Suppression of multipacting in high power RF couplers operating with superconducting cavities Open

P. N. Ostroumov, S. Kazakov, D. Morris, T. Larter, Alexander Plastun , et al. · 2017

First FRIB β=0.53 Prototype Coldmasss Build Open

Daniel Victory, Kyle Elliott, Byron Oja, John Popielarski, Michael Wilbur · 2017

The β=0.53 coldmass consists of eight Superconducting Radio Frequency (SRF) β=0.53 cavities, eight Fundamental mode Power Couplers (FPC), and one 8 T solenoid. This is the first coldmass with this version of cavity and it has brought new c…

Status of β=0.53 Pre-Production Cryomodule Open

Hiroyuki Ao, Brian M. Bird, G. H. Bryant, B. W. Bullock, Nathan Bultman , et al. · 2017

The driver linac for the Facility for Rare Isotope Beams (FRIB) comprises four kinds of cavities (=0.041, 0.085, 0.29, and 0.53) and six types of cryomodules including matching modules. FRIB has started the fabrication of a β=0.53 preprodu…

First FRIB β=0.041 Production Coldmass Build Open

Kyle Elliott, Samuel Miller, Byron Oja, John Popielarski, Laura Popielarski , et al. · 2017

Three β=0.041 cryomodules are required for the Facility for Rare Isotope Beams (FRIB) accelerator. Cleanroom assembly of all three coldmasses for these cryomodules has been completed. The cleanroom assembly includes; the superconducting ra…

FRIB HWR Tuner Development Open

S. Stark, A. Facco, S. M. Gerbick, Michael Kelly, Samuel Miller , et al. · 2017

During the last two years the HWR pneumatic tuner development at FRIB evolved from the first prototypes to the final production design. A lot of warm testing and several cryogenic integrated tests with cavity were performed to optimize the…

Design of a FRIB Half-Wave Pre-Production Cryomodule Open

Samuel Miller, Hiroyuki Ao, Brian M. Bird, G. H. Bryant, B. W. Bullock , et al. · 2017

The driver linac for the Facility for Rare Isotope Beams (FRIB) will require the production of 48 cryomodules (CMs). In addition to the β=0.085 quarter-wave CM, FRIB has completed the design of a β=0.53 half-wave CM as a pre-production pro…

Design and Commissioning of FRIB Multipacting-Free Fundamental Power Coupler Open

Zhihong Zheng, John Popielarski, Kenji Saito, S. Stark, Ting Xu , et al. · 2017

The original Fundamental Power Coupler (FPC) of Half-Wave Resonator (HWR) for the Facility of Rare Isotope Beams (FRIB) requires multipacting conditioning at operating RF power which is up to 5 kW Continue Wave (CW). Conditioning takes a l…

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