JLab Weekly for Users - Feb. 23, 2022

-CLAS Collaboration
-Scale Dependence
-EIC Partner Project
-Software & Computing RT
-Conference Attendance
-Alert Notification Test
-Safety Flash
-LaTeX Tools Training
-In Remembrance
-Women's History RT
-Community Spotlight
-January Hires
-Accelerator Traineeship
-JSA Thesis Prize
-JSA Postdoc Prize
-MOMO's Menu

 February 23, 2022

All-Staff Meeting Video Now Available
The video of the all-staff meeting held by Jefferson Lab Director Stuart Henderson on Feb. 22 is now available for viewing here.

You may also view the Q&A, which includes additional questions answered after the meeting. 


Next week, roughly 200 scientists from more than 40 institutions worldwide will participate in the CLAS Collaboration Meeting. The meeting will open with presentations from newly appointed Deputy Director for Science David Dean and new Associate Director for Physics Thia Keppel, followed by an update on the CEBAF accelerator. Right after, there will be a special open discussion session among CLAS members on medium-longterm plans of the collaboration. The highlight of the week will be a seminar by Alessandro Bacchetta (University of Pavia, Italy) on Friday morning. He’ll present an overview of the status and perspectives for Transverse Momentum Dependent Parton Distributions (TMDs).

The meeting will also feature updates on recently completed and advanced analyses on CLAS and CLAS12 data, new PAC proposals, upcoming and just-completed experiments, reports and discussions on software and CalCom (with a special emphasis on plans for pass-2 processing of CLAS12 data), and joint sessions devoted to the three physics Working Groups (Hadron Spectroscopy, Deep Processes and Nuclear Physics). To attend, register now here. For more details, contact CLAS Chair Silvia Niccolai.

A new paper examines the scale dependence of the gluon distribution in the nucleon and the pion in the framework of holographic light-front QCD and the Veneziano model. It argues that the QCD evolution of the gluon distribution leads to a single scale-dependent Pomeron, which depends on the momentum transfer squared and also on the physical scale of the amplitude. This can explain not only the Q2 evolution of the proton structure function at small x, but also the energy and Q2 dependence of high energy diffractive processes involving virtual photons up to Large Hadron Collider energies.


Progress in the 3D layout of the beam lines in the interaction region allows us to take the next step toward integrating the ancillary detectors along the beam line. These are, for example, the luminosity detector, local polarimetry, the backward small-angle electron tagging detectors, the Zero-Degree Calorimeter, off-momentum detectors, Roman Pots, and the detector systems in the B0 magnet. Starting from this 3D CAD layout, we completed a 3D model of the extended interaction region in the SketchUp modeling tool. This model includes the existing STAR electronics platforms to check possible reuse and modification needs, the various proto-collaboration detectors, and selected beam line detector elements like the proton-Carbon polarimeter and the luminosity detector. This visualization tool will greatly facilitate further engineering work and user engagement.

We are now working on completing the model that will allow us to define the installation sequence in the Interaction Region over approximately 80 meters. This effort will identify possible conflicts and refine the schedule, allow updating the beam pipe design in this region, and investigate how to best integrate the beam pipe into the detector and realize a bakeout as needed to maintain good ultimate beam line vacuum without impacting the micro-vertex tracker.  We will use the tool to study options to help meet the maximum fringe field requirements set by the RCS and the IR accelerator magnets, which are important for the flux return design for any experimental solenoid. Models for all three proto-collaboration detector proposals (ATHENA, CORE and ECCE) have been developed, of which the largest is shown in the figure.


The Software & Computing Round Table of March will cover “Data Management.” The topic is inspired by the saying: "If you do not manage your data, they will manage you.” On Tuesday, Mar. 1, at 11 a.m., Rosie Bolton from the Square Kilometre Array (SKA) will present "SKA Global Data Management Challenges and Prototypes"; Cedric Serfon (BNL) will share experience from using "Rucio at Belle II”; and John DeStefano (BNL) will talk about "Running Rucio: Design, Deployment, and Maintenance of a Critical Service from a Facilities Perspective.” The detailed agenda and Zoom information is available on Indico. For questions, contact Markus Diefenthaler.


In MEDCON 4, JLab staff are permitted to attend conferences virtually and in accordance with Travel Manual requirements. Virtual participation in conferences organized by foreign institutions requires advance approval by the DOE Program Office not less than 45 days prior to the conference start date.

Effective Feb. 23 and with advance approval of their division head, JLab staff may now attend in person a domestic meeting, conference or other event that is attended by either a large number of people from throughout an industry or profession or by those representing a wide range of interests when one of the following conditions is met:

  • To present a new and significant scientific result.   
  • When invited to serve as a meeting or session organizer, convener or chairperson.
  • When central to the research of an early career scientist.
  • When required to attain or maintain a professional certification or credential required for Jefferson Lab job performance.

The number of JLab participants will be limited to only those necessary to accomplish these objectives. Division head approval must be clearly identified through the Travel Authorization approval or via an email attached to the TA indicating division head approval to attend that event. This update will be included in the next revision of the TJNAF COVID-19 Health and Safety Plan. If you have any questions about the policy, contact Charlotte Cepello.

At 10:30 a.m. on Thursday, Mar. 3, Security personnel will conduct a test of Jefferson Lab’s Active Threat Alert Notification System. Like the Site-Wide Alert System, the test message will be sent via email and pagers/text and will display on the Cisco phone digital screens. No response will be expected, as this is only an operational test of the system. For more information about the test and steps you may need to take in the event of an actual active threat alert, see the full memo.

A Facilities Management & Logistics employee was loading property onto a work truck at the off-site Warwick Boulevard warehouse and was checking that the equipment was properly positioned and strapped down when, in the process of climbing down from the flat bed, the employee missed the lower step and fell to the ground, injuring their wrist. While working on elevated surfaces, it’s critical to frequently survey your work environment to avoid potential issues or obstructions and use engineered controls, when feasible. It is imperative to report any discomfort to your supervisor immediately when a fall occurs. Early reporting of discomfort can lead to effective case management and the development of a preventive plan that includes the even distribution of tasks within your work group.



On Thursday, Mar. 3 at 12:30-1:30 p.m., Max Bruker will present “Collaborative Writing: Version Control, Data Storage, Planning Ahead” as part of the “Paradigms for a More Efficient Publication Workflow” educational series. To join via Zoom, click here. For questions, contact Max Bruker

Abstract: Efficient scientific communication, be it in the form of presentations or writing, relies on the typesetting of visual material. Unfortunately, real-life issues, such as time constraints, unsystematic workflow, and improper use of the available tools often lead to suboptimal results despite significant efforts. This series of meetings aims to identify the underlying problems and explore some possible solutions. Focusing on LaTeX and some of its modern packages, I will show why everything is a computer programming task and hope to enable you to be efficient at executing it. The first part focused on what quality standards must be met, which the second part expanded on by showing some basics of how to implement the solutions in LaTeX. In the third part, Bruker will invite attendees to work interactively on examples submitted by the audience. Feel free to submit any interesting data/schematic visualization tasks you have had (or are about to have) to Max Bruker.



A big congratulations to the following colleagues on their internal promotions!

  • John Spurio, SRF Cryomodule Assembly Technician (Technician/Drafter I), Accelerator Division
  • Aubrie Davie, Energy & Sustainability Analyst (Staff Computer Scientist I), Facilities Management & Logistics
  • Shawn Frierson, CEBAF Operability Leader (Staff Engineer III), Accelerator Division
  • Arun Tadepalli, Hall A/C Staff Scientist I (Staff Scientist I), Physics Division


Save the Date! Join the conversation with women across the lab who will share their stories and career experiences. Panelists include Katherine Wilson (Engineering), Anne Payne (FM&L), Shareen McCallum (CFO), Tina Johnson (ES&H), Renuka Rajput-Ghoshal (Physics), and Valerie Bookwalter (Accelerator). Our panel will engage in a roundtable discussion in celebration of Women's History Month on Thursday, March 10, 9 – 10 a.m. This event will be facilitated by Aurora Realin, DEI program manager, and is open to the Jefferson Lab community. To join, click here.


In recognition of Black History Month, we are highlighting Renee Carter! As a procurement administrator, Carter is focused on securing the tools, materials and devices that Jefferson Lab researchers need to fulfill every aspect of their work. For Carter, supporting a team goes well beyond her work at Jefferson Lab, and she's accomplished a lot since she was originally featured in 2017. Together with her husband, she coaches basketball with Special Olympics Area 33-Newport News since 2018. They enjoy this opportunity to engage with some amazing athletes and their families. Their team has won back-to-back State Championships and will be completing for a three-peat at the Special Olympics VA State games on March 5-6, 2022. 

She also cheers on her two sons in their athletic careers. Her oldest son, Christopher, 31, continues to play on the gold-winning Virginia Special Olympics team out of George Mason University. In 2019, he was selected from a pool of Special Olympics athletes throughout the world to participate in NBA Cares Special Olympics Unified Basketball Game during the NBA all-star weekend in 2020. Chris had the honor of wearing number 24, one of Kobe Bryant's jersey numbers, and he hit the game winning shot at the buzzer to win the game for his team. Chris currently lives and works in Fairfax, Va. Carter’s youngest son, Marcus, 24, played guard for the Men’s Basketball Team at Christopher Newport University. Marcus was awarded 1st team All American Honors as a member of the CNU Men's Basketball. He was a part of a team that reached the Final Four for the first time in school history. Marcus graduated in 2019 with a bachelor's degree in political science and currently works and resides in Chesterfield, Va. When it comes to achieving big goals, both Carter’s sons and her colleagues at Jefferson Lab rely on her ever-present support as they pursue their dreams.


Please be sure to welcome Jefferson Lab's newest employees to the lab! To learn more about your new colleagues, click on their profile link below!

- Juan "Rick" Adrover - Electrical Safety Engineer, ES&H Division
- Sarra Bira - SRF Accelerator Post Doctoral Fellow, Accelerator Ops, R&D
- David Dean - Deputy Laboratory Director, Directorate
- Dyanne "Dee" Delucia - Administrative Assistant, Chief Operating Officer Office
- Tinnya Hopson - Recruiting Coordinator, Chief Operating Officer Office
Krishna Padiyar - Site Occupational Medical Director, ES&H Division
- Nathan Rider - Electrical Engineering Manager – Instrumentation and Controls, Engineering Division
- William Sterling - Techno./Design Drafter (T/D II), Engineering Division
Matthew Weaks - Production Engineer, Accelerator Ops, R&D


Particle accelerators are among the hidden drivers of our modern world. From medical diagnostics and treatments to computer chip manufacturing and oil exploration to discovery sciences, the world’s more than 30,000 particle accelerators underlie many of our modern conveniences. Now, more local students will soon have easier access to the unique job opportunities offered by these remarkable machines. Jefferson Lab has partnered on a new traineeship to give graduate students unprecedented access to opportunities in accelerator science and technology. The new Virginia Innovative Traineeships in Accelerators (VITA) is a partnership among four higher education and research institutions located in Hampton Roads, including Old Dominion University, Jefferson Lab, Hampton University and Norfolk State University. Learn more about VITA here.

The 2022 JSA Thesis Prize competition is now open! The Jefferson Lab Users Organization Board of Directors will award the JSA Thesis Prize for the best lab-related thesis during the annual JLUO meeting in June. This project is fully supported by the JSA Initiatives Fund. Criteria for evaluation include quality of the written thesis, contribution of the student to the work, and contribution to the lab physics/community. The deadline for the JSA Thesis Prize competition is Tuesday, Mar. 1. For more information, click here. For questions, contact Lorelei Carlson

The 2021 JSA Postdoctoral Research Prize competition is now open! This competition is organized by the Jefferson Lab Users Organization Board of Directors and is sponsored by the JSA Initiatives Fund. The winning candidate will receive a $10,000 grant to pursue a research project of their choosing. The award is based (in part) on the originality and quality of this proposed research. The deadline for the JSA Postdoctoral Prize competition is Tuesday, Mar. 1. The winner will be announced in Spring 2022. For more information, click here. For questions, contact Lorelei Carlson.


Tired of the same old dinners? Let MOMO's broaden your plate with eclectic and delicious meals delivered right to your door!
Next week’s $10 menu options include:

  • Chicken tortilla soup, chicken and cheese quesadilla and a tomato, cucumber and avocado salad.
  • Shredded chicken enchiladas topped with cheddar cheese, yellow rice with black beans and a corn, tomato and pepper salad.
  • Shepherd’s pie (made with ground beef, mixed veggies and topped with mashed potatoes), rolls and a romaine salad with peppers, tomatoes, cucumbers, shredded cheese and basil vinaigrette.
  • Shrimp and sausage in BBQ sauce with peppers and onions, smoked gouda grits and asparagus.
  • Spaghetti tossed with mushrooms, peppers, onions, broccoli, vodka sauce and topped with walnuts, grilled bread and a Caesar salad.
  • Pork tenderloin with peach chutney, mashed potatoes and green beans.
  • Pesto salmon with roasted tomatoes, oven-roasted potatoes and broccoli.
  • Chicken salad with rolls, oven-roasted potato salad and a marinated tomato, cucumber and pepper salad.

In addition to these delicious delivery options, MOMO's @ Quark Café also offers two weekly choices of a dinner for four that can be picked up at the Quark Café during normal operating hours. Options each week can be found on page five of the weekly Café menu here.

À la carte items and desserts as well as vegetarian, gluten-free and low-sodium options available upon request. Delivery is free within a 10-mile radius or enjoy curbside pickup at 11801 Canon Blvd, Newport News, VA 23606, in City Center. Pickup is also available in Quark Café. To place your order or for more information, call MOMO’s at 757-240-5854 or email Martha "MOMO" BennettView the upcoming Feb. 28-Mar. 4 menu here. View the current Feb. 21-25 menu hereFor questions, contact Josh Cameron.


Editor's note: This edition of the JLab Weekly brought to you by Kandice Carter. If you have an article idea that is worthy of appearing on the lab's homepage, send it to her today! Rebecca Anderson will be back in the office next week, so be sure to submit material for future editions of the JLab Weekly to Rebecca.  

The JLab Weekly provides information on the status of safety, accelerator operations, experiments, reviews, upcoming activities and special events. Have something you want to see in the JLab Weekly? Send submissions to Rebecca Anderson.

E. Isupov et al. (CLAS Collaboration). "Polarized structure function σLT′ from π0p electroproduction data in the resonance region at 0.4GeV2<Q2<1.0GeV2." Phys. Rev. C 105, L022201 (2022).

Colin Egerer, Christos Kallidonis, Joseph Karpie, Nikhil Karthik, Christopher J. Monahan, Wayne Morris, Kostas Orginos, Anatoly Radyushkin, Eloy Romero, Raza Sabbir Sufian, and Savvas Zafeiropoulos (On behalf of the HadStruc Collaboration). "Transversity parton distribution function of the nucleon using the pseudodistribution approach." Phys. Rev. D 105, 034507 (2022).



To view this photo larger, click here.
CNU President Paul Trible and JLab Director Christoph Leemann sign a memorandum of understanding, Oct. 9, 2006.

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Accelerator Schedule

Senior Procurement Officer
Hall B Staff Scientist
Staff Computer Scientist I
Postdoctoral Fellow
SRF Material Scientist
Hall A/C Group Leader

    Feb. 23: Age/Generation Demographic FG
    Feb. 23-25: GlueX Collab Meeting
    Feb. 24: Race Demographic FG 
    Feb. 24: Engineering Career Day
    Feb. 28: SafeZone Education

    Mar. 1: Software & Computing RT
    Mar. 1-4: CLAS12 Collab
    Mar. 3: Collaborative Writing
    Mar. 5: MS Science Bowl
    Mar. 10: Women's History Roundtable
    Mar. 21: Safety Shoe Truck
    Mar. 22: Overcoming Barriers to Comms
    Mar. 28-30: J-FUTURE

    Apr. 5: Software & Computing RT
    Apr. 9-12: APS April Meeting
    Apr. 9-16: Intl Rad Damage and Protection
    Apr. 20: JLab Sci Ed Teacher Night

    May 2-6: DIS 2022
    May 3: Software & Computing RT
    May 9-13: QCD Evolution 2022
    May 17-19: Streaming Readout X
    May 30-June 5: CIPANP 2022

    June 7: Software & Computing RT
    June 13-15: JLUO Meeting

    July 12: Software & Computing RT
    July 31-Aug. 5: IEEE Real Time Conf

    Aug. 7-12: GRC Photonuclear Reactions

    Sept. 11-16: INPC 2022

    May 8-12, 2023: CHEP


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