What You Will Do This position will be filled at either the R&D Engineer 2 or 3 level, depending on the skills of the selected candidate. Additional job responsibilities (outlined below) will be assigned if the candidate is hired at the higher level. The Accelerator Operations and Technology Division (AOT), Radio Frequency Engineering (RFE) group is seeking a high-power RF engineer for the 201-MHz RF team. The AOT division maintains, operates, and upgrades all accelerator systems used at the Los Alamos Neutron Science Center (LANSCE) complex. These consist of two 750-keV Cockcroft-Walton-based injector systems (H+ and H- systems), a 201.25-MHz drift tube linear accelerator utilizing high-power diacrode tubes, an 805-MHz coupled cavity linac utilizing klystrons as the primary power source, a proton storage ring, and roughly a kilometer of beam transport lines that feed beam to the five independent research programs. The RFE group is principally responsible for all RF systems, all pulsed power, and all high-power DC power supplies used to operate magnets on the beam transport lines. Low-level RF (LLRF) control and monitoring of the various RF sources used to drive the beam is critical to the high performance and successful operation of the accelerator. AOT's Radio Frequency Engineering (AOT-RFE) Group provides expertise, support, and technical leadership in high power RF systems, high voltage systems, pulsed power systems, low level RF feedback and feedforward systems, and high current / high power magnet power supply systems. AOT-RFE's primary focus is the design, development, and maintenance of these systems for the LANSCE Los Alamos Neutron Science Center (LANSCE) User Facility. This includes participation in current and future projects to enhance the capabilities at LANSCE. R&D Engineer 2 ($94,100 - $155,700) As a member of the AOT-RFE high power RF Engineering team, you will be working closely with other engineers and technicians and will be responsible for the operation, troubleshooting, and maintenance of the LANSCE 201 MHz high power RF vacuum tube and solid state power amplifier systems. This includes design and use of associated electronics, interlocks, protection circuits, high voltage power supplies, and power electronics. The successful candidate is also expected to provide "on call" support for the LANSCE high power RF amplifier systems after hours and on weekends. The "on-call" assignment will typically be for one week out of every six, while the accelerator is operating (approximately 7 months per year). R&D Engineer 3 ($113,100 - $190,900) In addition to what is outlined for R&D Engineer 2, this level will also involve planning and implementing future RF system upgrades as part of a larger team. This includes a high power amplifier system to drive a new radio frequency quadrupole accelerator and a replacement high voltage system with higher power klystron amplifiers for a large portion of the LANSCE linac. The work also includes analyzing RF system data to guide design decisions for enhancements for improving reliability and performance. What You Need Minimum Job Requirements: Along with a resume/CV, applicants must submit a comprehensive cover letter addressing, bullet by bullet, each of the required and applicable desired skills listed below. R&D Engineer 2 Demonstrated knowledge and experience with two or more of the following technologies: * Installation, operation and maintenance of high-power gridded vacuum tube or klystron-based RF amplifier systems.
* Installation, operation and maintenance of high voltage power supply and capacitor bank systems, including engineered controls and procedural steps required for their safe use.
* Installation, operation, and maintenance of high power LDMOS or GaN transistor-based RF amplifier systems.
Demonstrated knowledge and experience with all of the following tasks: * Passive RF components in coaxial transmission lines, such as hybrids, directional couplers, combiners and splitters and circulators.
* Programmable logic controllers used in RF transmitter or industrial applications. (National Instruments LabVIEW and Allen Bradley experience are both acceptable)
* Test, diagnosis and repair of electronic equipment/components, particularly those used in RF transmitter applications.
* Ability to interpret and create detailed electrical schematics.
* Design, layout and building of prototype printed circuit boards for small projects, including the use of surface mount technology.
* Strong oral and technical writing skills, including drafting detailed equipment specifications and preparation of safety procedures for operation and maintenance of high-power equipment
* Familiarity working with a close-knit team of engineers and technicians and supporting or coordinating with a variety of outside groups from accelerator physicists to electricians, mechanics to mechanical engineers.
Additional Job Requirements for R&D Engineer 3: * Demonstrated knowledge and experience with the design of high-power gridded vacuum tube or klystron-based RF amplifier systems.
* Demonstrated knowledge and experience with the design of high voltage power supply and capacitor bank systems, including the engineered controls and procedural steps required for their safe use.
* Demonstrated knowledge and experience with the design of electronic systems including proficiency in the use of software simulation software to model performance. (PSpice, Multisim, LTSpice, etc.)
* Demonstrated experience coordinating multidisciplinary projects in design or upgrade of complex Radio Frequency systems
* Demonstrated experience in effectively producing written documents and successful oral communication skills.
Desired Qualifications for both R&D Engineer 2 and 3: * Knowledge and familiarity with operation and maintenance of RF particle accelerators.
* Experience with matrix algebra and block diagram simulation software (Matlab/Simulink, Scilab/Xcos, etc.)
* Knowledge and familiarity with resonant cavity circuits, tuning and coupling.
* Knowledge and familiarity with accelerator feed forward and feedback low level RF systems.
* Experience with high power broadcast systems for television or radio
* System or component level experience with high power military or commercial radar
* Ability to obtain a Q clearance, which typically requires U.S. citizenship.
Education/Experience at R&D Engineer 2 level: Position requires a minimum of a Bachelor's Degree in Engineering from an ABET accredited institution and 4 years of related experience; or, an equivalent combination of education and experience directly related to the occupation. Education/Experience at R&D Engineer 3 level: Position requires a minimum of a Master's Degree in Engineering from an ABET accredited institution and 6 years of related experience; or, an equivalent combination of education and experience directly related to the occupation. A Ph.D. is preferred. Essential Job Functions (can perform with or without reasonable accommodation): Physical Job Requirements: Ability to speak, ability to hear in a normal range, standing, walking, reaching overhead, reaching horizontally, reaching down, gripping with hands, typing or keyboarding.
Note to Applicants: Consideration for the position will be strictly limited to applicants that submit a comprehensive cover letter addressing, bullet by bullet, each of the required and applicable desired skills. Location: This position will be physically located in os Alamos, NM. Position commitment: Regular appointment employees are required to serve a period of continuous service in their current position in order to be eligible to apply for posted jobs throughout the Laboratory. If an employee has not served the time required, they may only apply for Laboratory jobs with the documented approval of their Division Leader. The position commitment for this position is 1 year. Where You Will Work The Accelerator Operations and Technology - Radio Frequency Engineering (AOT-RFE) Group provides expertise, support, and technical leadership in all aspects of RF engineering including gridded tube amplifiers and klystrons as well as RF control systems and RF accelerator cavities. AOT-RFE's primary focus is the design, and implementation of RF systems for the LANSCE User Facility. This includes participation in current and future projects. AOT's secondary focus is to share its expertise and experience with organizations within the Laboratory as well as external partners and sponsors. Along these lines, AOT-RFE has worked on national accelerator and global security projects utilizing its knowledge base while incorporating cutting edge technology. Additionally, the group fosters and participates in worldwide collaborations, workshops, and conferences in the interest of exploring and pushing the frontiers in RF technology. Located in northern New Mexico, Los Alamos National Laboratory (LANL) is a multidisciplinary research institution engaged in strategic science on behalf of national security. LANL enhances national security by ensuring the safety and reliability of the U.S. nuclear stockpile, developing technologies to reduce threats from weapons of mass destruction, and solving problems related to energy, environment, infrastructure, health, and global security concerns. Our generous benefits package includes: * PPO or High Deductible medical insurance with the same large nationwide network
* Dental and vision insurance
* Free basic life and disability insurance
* Paid maternity and parental leave
* Award-winning 401(k) (6% matching plus 3.5% annually)
* Learning opportunities and tuition assistance
* Flexible schedules and time off (paid sick, vacation, and holidays)
* Onsite gyms and wellness programs
* Extensive relocation packages (outside a 50 mile radius)
Additional Details Directive 206.2 - Employment with Triad requires a favorable decision by NNSA indicating employee is suitable under NNSA Supplemental Directive
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