In this role, you will independently provide leadership and have technical responsibility for the Radio Frequency (RF) Engineering work for the Advanced Light Source Upgrade (ALS-U) of the accelerator complex, a world-class user facility that provides high-intensity photon beams for science. You will apply RF engineering principles, develop methods, and research techniques toward the solution of complex technical problems in RF Engineering. You will perform a variety of engineering tasks such as developmental work, characterization measurements, design, develop subsystems, fabricate, commission and document. You will perform reconfiguration and design work for other projects, programs and laboratories.
Provide leadership and have technical responsibility for the design and delivery of the High Power RF Systems at the ALS-U and ALS.
Working independently, apply RF engineering principles, develop methods, and research techniques toward the solution of complex technical problems in RF Engineering.
Perform a variety of engineering tasks such as developmental work, characterization measurements, design and develop subsystems and conduct repairs in support of the RF systems currently installed.
Perform reconfiguration and design work for planned system upgrades. Will design using ECAD tools and evaluate designs using circuit simulation.
Independently lead the support of the ALS RF systems which includes the upgrade, repair and maintenance of following systems:
Low phase noise, 500 MHz Master Oscillator and signal distribution system
Low Power RF Controllers consisting of analog and digital based (FPGA) phase and amplitude control loops
Electron Gun System, a thermionic gun that is pulsed at 125 MHz and operates at an accelerating potential of 120 kV DC,
Sub-Harmonic Buncher amplifier systems operating at 125 & 500 MHz in pulse mode at 20 kW
24 MW pulsed L-Band PFN Modulators delivering power to the 3 GHz Linac accelerating structures
80 kW CW, 500 MHz IOT based Booster Ring RF amplifier system
65 kW CW, 500 MHz Klystron based Cavity Teststand amplifier system
300 kW CW, 500 KHz Klystron based Storage Ring RF system system
Normal conducting, Ultra High Vacuum (UHV) high-Q resonant RF cavities at 125, 500 MHz & 1.5 & 3.0 GHz
Coaxial, WR-650 and WR-1800 waveguide RF transmission line systems
Higher Order Mode (HOM) Damping systems
Temperature Controlled water cooling systems
Multi-megahertz pulsed Cam-Shaft beam kicker system
PLC & EPICS based controls, ModBusTCP protocol, IEC 61131 Structured Text programming.
Contribute to pulsed power projects.
Provide leadership to technical staff.
Coordinate electronic and mechanical resources needed to complete a task or project.
Work with other scientists and engineers to review and solve difficult technical issues.
Improve documentation, baseline data and operating and maintenance procedures.
Contribute scope and provide cost and schedule estimates for projects.
Represent the Laboratory to the outside world in RF Engineering through, for example, participation in design reviews, workshops and conferences.
Author or contribute to conference presentations and publications.
May develop or lead internal or external collaborations.
Independent engineer who plays a leadership role in RF amplifier systems or accelerating structures research and development.
BS or equivalent in Engineering or a related field
8+ years of relevant experience in the design, construction, implementation and maintenance of systems involving pulsed megawatt klystrons and hundred-kilowatt class CW klystrons in the several hundred megahertz to multiple gigahertz frequency range including associated power supplies and modulators.
3+ years as a demonstrated technical leader and supervisor
Demonstrated leadership and authority in the area of High Power RF Amplifier systems (electron tube or solid-state). Preferred for charged particle accelerator applications.
Demonstrated working knowledge of UHV materials, UHV assembly techniques and of accelerating structures.
Experience with industrial control systems and control algorithms/techniques.
Experience with a finite element method solver for electromagnetic structures such as HFSS or Microwave Studio.
Experience with E-CAD tools for schematic capture, simulation, design for Manufacture.
Experience using Project Data Management (PDM) tools such as Windchill, AutoEDMS, etc.
Excellent oral and written communication skills.
Ability to interact effectively with experts in multiple disciplines, including machine control software engineering, mechanical engineering, physics and operations.
Ability to work effectively in a team environment.
Additional Desired Qualifications:
Advanced degree desired.
Have working knowledge of beam interaction with accelerating and stripline kickers.
Have working knowledge of digital-based controls for RF systems. Typically, FPGA/DSP based systems with multi-channel heterodyned up and down-converted signals.
Knowledge of superconducting RF systems for charged particle accelerators and synchrotron light source physics is preferred.
Experience with EPICS control system desired.
The posting shall remain open until the position is filled.
This is a 2-year term appointment with the possibility of extension or conversion to Career appointment based upon satisfactory job performance, continuing availability of funds and ongoing operational needs.
Full-time, M-F, exempt (monthly paid) from overtime pay.
Salary is commensurate with experience.
This position may be subject to a background check. Any convictions will be evaluated to determine if they directly relate to the responsibilities and requirements of the position. Having a conviction history will not automatically disqualify an applicant from being considered for employment.
Lawrence Berkeley National Lab, 1 Cyclotron Road, Berkeley, CA.
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Internal Number: 86238
About Lawrence Berkeley National Laboratory
In the world of science, Lawrence Berkeley National Laboratory (Berkeley Lab) is synonymous with excellence. Thirteen scientists associated with Berkeley Lab have won the Nobel Prize. Fifty-seven Lab scientists are members of the National Academy of Sciences (NAS), one of the highest honors for a scientist in the United States. Thirteen of our scientists have won the National Medal of Science, our nation's highest award for lifetime achievement in fields of scientific research. Eighteen of our engineers have been elected to the National Academy of Engineering, and three of our scientists have been elected into the Institute of Medicine. In addition, Berkeley Lab has trained thousands of university science and engineering students who are advancing technological innovations across the nation and around the world. Berkeley Lab is a member of the national laboratory system supported by the U.S. Department of Energy through its Office of Science. It is managed by the University of California (UC) and is charged with conducting unclassified research across a wide range of scientific disciplines. Located on a 200-acre site in the hills above the UC Berkeley campus that offers spectacular... views of the San Francisco Bay, Berkeley Lab employs approximately 4,200 scientists, engineers, support staff and students. Its budget for 2011 is $735 million, with an additional $101 million in funding from the American Recovery and Reinvestment Act, for a total of $836 million. A recent study estimates the Laboratory's overall economic impact through direct, indirect and induced spending on the nine counties that make up the San Francisco Bay Area to be nearly $700 million annually. The Lab was also responsible for creating 5,600 jobs locally and 12,000 nationally. The overall economic impact on the national economy is estimated at $1.6 billion a year. Technologies developed at Berkeley Lab have generated billions of dollars in revenues, and thousands of jobs. Savings as a result of Berkeley Lab developments in lighting and windows, and other energy-efficient technologies, have also been in the billions of dollars. Berkeley Lab was founded in 1931 by Ernest Orlando Lawrence, a UC Berkeley physicist who won the 1939 Nobel Prize in physics for his invention of the cyclotron, a circular particle accelerator that opened the door to high-energy physics. It was Lawrence's belief that scientific research is best done through teams of individuals with different fields of expertise, working together. His teamwork concept is a Berkeley Lab legacy that continues today.