Search NASA⌕ Search

SEARCH · Search NASA

Results for “Accelerator Design Technology, and Operations”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 127 records · Page 7
All sourcesNASA NTRSDOE OSTI
DOE OSTI2019

FY 18 Summary Report on the Technology Transfer Work Package for the Northstar Mo99 Production Project

In order for LANL to assist Northstar in achieving their production goal, the main work package for LANL in FY18 was termed Technology Transfer. This has evolved beyond transferring knowledge and information to assisting in the new plant design. Progress was significantly delayed because Northstar did not provide a point-of-contact until mid-year, at which point James McCarter was hired. This year end report will detail the work done in support of the Northstar facility.

43 PARTICLE ACCELERATORS↗
DOE OSTI2019

Simple Longitudinal Dynamics Modeling for X-FEL Linacs

We generate a first-order model for the longitudinal dynamics of an X-FEL linac with a 2-stage bunch compression scheme, such a MaRIE. While such a simple approach cannot capture all of the subtleties of relevant effects such as coherent spontaneous emission (CSR) and space-charge induced microbunching instabilities, simple scaling laws permit insight into the potential magnitude of those effects. This approach also allows an initial estimation of overall accelerator system length, and required dechirping at the end of the accelerator, thus permitting relative evaluations of proposed configurations.

43 PARTICLE ACCELERATORS↗
DOE OSTI2019

ORNL D-Li Fusion Neutron Facility - Accelerator Systems Cost Report

Several past design studies were reviewed and an analysis of alternatives completed to assess the range of accelerator parameters and accelerating structure types that can potentially meet the requirements of a 125-mA, 40-MeV, D-Li Fusion Neutron Facility. The design studies reviewed included past LANL designs for IFMIF and designs based on the use of modified versions of the LANL LEDA. Also reviewed were the past IFMIF-EVEDA design iterations that explored several options for the main linac including the use of an Alvarez DTL, interdigital accelerating structures, and a superconducting RF half-wave resonator {SCRF HWR) based main linac.

43 PARTICLE ACCELERATORS↗
DOE OSTI2019

The BNL-LANL cathode collaboration: Applying the tools of modern material science to cathode design [Slides]

Changes to the LANL / BNL photocathode programs are a strategic response to evolving needs and opportunities within NNSA. The Materials by Design strategy engages the broader material science communities at both LANL and BNL. Progress has been non-linear with time and investment. Techniques honed for one application can be rapidly applied to many others. For example, Cs 2 Te following successes of smooth K 2 CsSb. We enter a cycle of using accelerator-based tools to improve accelerators. Providers of advanced tools of material science (accelerator based x-ray light sources) are now availing themselves of the same capabilities to improve the next-generation machines. We are looking to define future collaborations.

36 MATERIALS SCIENCE↗
DOE OSTI2019

Northstar Technology Transfer and Facility Development Work Package FY19 Summary Report

Northstar is rapidly advancing toward a Mo99 production facility. This will be a demonstration and technology development or proof-of-concept facility comprised of 1 target station. The target will be 2 sided, irradiated by 2 rhodotrons. Diagrams of the facility are included in this report. LANL has provided support in FY19 on many components and systems toward the realization of this facility. Besides providing the documentation and lessons learned from years of concept development and tests of targets and other subsystems, specific development work was provided in a number of areas, including bulk and local shielding, target insertion and removal, facility layout, and target holder development. These will be discussed in some detail.

43 PARTICLE ACCELERATORS↗
DOE OSTI2020

Northstar Accelerator Based Mo99 Production Facility Design Support (LANL FY20 Quarters 1 and 2 Facility Design Support Report)

Facility design support this quarter centered on transfer of the target insertion and design details to MBraun and Springs, the companies under contract via Northstar to do the hot cell, target insertion and the local target shielding. A significant number of changes have been introduced by these vendors which have been reviewed and critiqued. In addition, the company contracted to produce the Mo100 disks announced that the tolerance on the thickness of 0.5 mm would be ±25%. An alternative design of the target holder was proposed. Bulk shielding and local target shielding design work has continued also and will be reported.

43 PARTICLE ACCELERATORS↗
DOE OSTI2020

Niowave Power Converter Modeling and Testing

Niowave has designed, built and is now using in-beam a low power (up to 10 kW) lead bismuth eutectic (LBE) converter. In this concept, an electron beam is passed through a falling layer of LBE, converting the electron to neutrons which then pass into a vessel which is functionally a subcritical reactor configuration. A detailed report has been written by Niowave, entitled “LBE Neutron Converter Manual.” The LANL contribution has been modeling, followed by a flow visualization model made in quartz. The LANL contribution is reported herein.

43 PARTICLE ACCELERATORS↗
DOE OSTI2020

A beam profile and position measurement system for the IPF target

Currently one determines the size and position of the proton beam at the IPF target using plastic films. These films are installed in a target carrier, lowered into position, exposed to the beam, raised back up to the hot cell, removed from the target carrier, and assessed via a video feed. About an hour is required for each cycle of measurement. Because of this high cost in terms of time the users usually settle for a beam that is good enough to meet their needs, but not as good as they would like. I propose here a diagnostic device that would enable a measurement of under two seconds. This would enable delivery of a better-quality beam in less time.

43 PARTICLE ACCELERATORS↗
DOE OSTI2020

Phase 1 NuScale SMR FOAK Nuclear Demonstration Readiness Project (Final Scientific/Technical Report)

The overarching objective of the Phase 1 NuScale SMR First-of-a-Kind (FOAK) Nuclear Demonstration Readiness Project was to enhance competitiveness of the U.S. nuclear industry by enabling timely deployment of the NuScale small modular reactor (SMR). The scope of this Phase 1 project continued to advance the licensing and design maturity, particularly in those areas related to supporting customer readiness, supply chain integration, cost competitiveness, and cost confidence. This investment provided by the Government has accelerated development of these designs and technologies so that the existing domestic fleet of nuclear power plants remains viable and the most mature in the nuclear industry. The intent is to have the new, advanced U.S. designs be deployed as early 2026, and be globally competitive. As a part of the First-of-a-Kind Nuclear Demonstration Readiness Project, NuScale has been developing an advanced reactor design, leading the path for other development projects or complex technology advancements for existing plants that have significant technical and licensing risk. The NuScale Power team (NuScale) is advancing licensing, engineering, supply chain development, testing, and other required activities to enhance the innovation and competitiveness of the U.S. nuclear industry by enabling timely deployment of the NuScale SMR. Specifically, NuScale is performing the following activities in Phase 1. Fully supporting the NRC review of the NuScale DCA to ensure approval of a final safety evaluation report by the end of 2020. Improving plant cost confidence and cost competitiveness through design and supply chain advancement, incorporation of constructability best practices, and margin recovery to increase plant power output. Accelerating design maturity, technology development, and operational program readiness to support a customer commitment for plant deployment. The Department of Energy (DOE) Office of Scientific and Technical Information (OSTI), a unit of the Office of Science, fulfills agency-wide responsibilities to collect, preserve, and disseminate both unclassified and classified scientific and technical information (STI) emanating from DOE-funded research and development (R&D) activities at DOE national laboratories and facilities and at universities and other institutions nationwide. This scientific and technical report provides summaries of the analyses and research that was performed by NuScale under this project that achieves the objective of disseminating information to the nuclear industry to ensure the innovations realized are shared for the benefit of the industry at large.

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS↗
DOE OSTI2020

Space charge fields in azimuthally symmetric beams: Integrated Green's function approach

Electromagnetic fields induced by the space charge in relativistic beams play an important role in Accelerator Physics. They lead to emittance growth, slice energy change, and the microbunching instability. Typically, these effects are modeled numerically since simple description exists only inthe limits of large- or small-scale current variations. In this paper we consider an axially symmetric charged beam inside a round pipe and find the solution of the space charge problem that is valid in the full range of current variations. We express the solution for the field components in terms of Green’s functions, which are fully determined by just a single function. We then find that this function is an on-axis potential from a charged disk in a round pipe, with transverse charge density ρ⊥(r), and it has a compact analythical expression. We finally provide an integrated Green’s function based approach for efficient numerical evaluation in the case when the transverse charge density stays the same along the beam

43 PARTICLE ACCELERATORS↗