[Eicatjlab_all_personnel] EIC at JLab Monthly Newsletter Fall/Winter Edition 2025

Wed Nov 19 16:21:33 EST 2025

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[EIC at JLab Monthly Newsletter  Fall/Winter Edition 2025]

A message from Todd Satogata,
Accelerator Associate Project Manager
EIC at JLab Employee Spotlight – Jiquan Guo
Upcoming Dates for Technical Rep Training
EIC at JLab Administrative News
BEHIND THE BUILD - THANK YOU, EIC & HALL D TEAMS!
Around JLab News
[EIC Header,Upcoming Technical Design Reviews]

·            AC-LGAD (BTOF, FTOF, CTOF) Peer Review – 3 Dec
·            First Article 591 MHz Cryomodule FDR – 9-10 Dec
·            ePIC Micro Pattern Gaseous Detector (MPGD) PDR – 15 Dec (tentative)
·            ASR Conventional Magnet PDR – Feb-Mar TBD (tentative)

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·            EIC at JLab All Hands Meeting – Jan 2026 TBD
·            Accelerator Storage Rings Subproject Readiness Review – Jan 14-16 2026
·            Detector Subproject Readiness Review – Feb 3-5 2026
·            Global Project & Energy & Luminosity Ramp-up Readiness Review – Feb 10-12 2026
·            Electron Injector Follow up Review – Apr 2026
·            DOE IPR– Mar 9-12, 2026
·            DOE CD-2/3 Approval for Accel Rings – Sep 2026

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[cid:image036.jpg at 01DC5970.8DC6AF90]All everyday material, from cells to cell phones, from dust to stars, is made of atoms; every atom is made of a nucleus surrounded by a cloud of electrons.
The Electron-Ion Collider (EIC) will enable exploration of how quarks and gluons combine and interact to form the protons and neutrons comprising the nuclei of every atom. By colliding high-energy beams of electrons with ions (nuclei stripped of their electron clouds), the EIC will act as an ultra-precise microscope, revealing how quarks and gluons interact and give rise to the mass and structure of the visible universe. It’s designed to answer long-standing questions about the strong force that holds nuclei – and thus all matter – together.
Electrons and nuclei can also interact magnetically, like they are tiny bar magnets. This magnetic property of subatomic particles is called spin, and it has a direction like a bar magnet. A key feature that makes the EIC uniquely powerful is its ability to use polarized beams, where the spins of most of the electrons or ions in a particular colliding beam are pointing in the same direction. This polarization is crucial because it allows researchers to study how the internal spin of quarks and gluons contributes to the overall spin of the proton, a puzzle that has baffled physicists for decades. By precisely controlling and measuring beam polarization during collisions, scientists can separate and understand the roles of quark motion, gluon fields, and quantum effects in shaping one of nature’s most basic properties: angular momentum.
Beyond its scientific breakthroughs, the EIC will drive innovation in accelerator and detector technology, data analysis, and advanced materials. It will foster collaboration among national labs, universities, and industry while training a new generation of researchers and engineers. In uncovering how matter’s fundamental ingredients behave and generate the properties of the world around us, the Electron-Ion Collider stands to transform our understanding of the universe at its most elemental level.

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·         12/10/2025      8:15 a.m. – 2:30 p.m.

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As the Electron-Ion Collider (EIC) project design matures, validating detector design and performance before construction is critical. Tests are needed to ensure proper assembly, integration with electronics, noise studies, and benchmarking against simulations. Detectors also require exposure to high-energy, charged particles. But while cosmic rays are sometimes useful, their rates are low, their energies are unknown, and data collection can take weeks. By contrast, controlled particle fluxes provide precise energies and high rates, enabling fast calibration.

Enter Hall D! Here, a flux of 3.5-6 GeV electrons and positrons at kilohertz rates provides an excellent setup for testing small sample detectors. The pair spectrometer area, originally built for GlueX luminosity measurements, also provides an ideal environment for detector R&D. Thank you, Hall D, for making these critical EIC detector studies possible! To learn how the EIC, Hall D, Radiation Control and Shipping & Receiving teams collaborated toward successful tests, check out the full story on the “Behind the Build” webpage<https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab.us11.list-2Dmanage.com_track_click-3Fu-3D1de9c43e6d5e45ff0ecd664cd-26id-3D72e8998441-26e-3Dfc29a61ba5&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=hgOzrSUKitFe7k0Z8C6zexvOOVT83W-5qSgP81n9YgU&m=u94DCEZN1Wdg-IgikK5T0ncYG4Zp3X2kHLMw8SJheTt8ZnqaLJ8tjOX-aCWnofNE&s=Cz9O2bsaBDtY0Jhp3KrJ1nOktK824gtw17iUYhbiDBU&e=>.

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Scientific users Simone Mazza, left, and Yu Hu were among the EIC and Hall D detector-study collaborators.
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[A person wearing glasses  AI-generated content may be incorrect.]Jiquan Guo is the lead RF physicist for EIC project's RF system at JLAB. Jiquan earned his Ph.D. in Applied Physics from Stanford University in 2008. His dissertation was completed at SLAC National Accelerator Lab, focusing on the active high power RF pulse compression system capable of providing flat top pulse for normal conducting linacs, using a semiconductor RF switch. He designed and built such a switch as well as a few RF components in the pulse compression system and demonstrated the active pulse compression experimentally.
Jiquan continued to work as a research associate at SLAC and developed an X-band 2K SRF material sample testing platform with a TE013 cavity, working with collaborators to develop novel thin film SRF materials like MgB2.
In 2011 Jiquan moved to Jefferson Lab to work as a staff scientist in the SRF institute. His early work at JLab focused on CEBAF 12 GeV upgrade, especially the C100 cryomodules' waveguide HOM filter, HOM survey, and commissioning. He also worked on the development of RF windows and HOM absorbers and materials for various SRF projects.
Between 2014 and 2019, Jiquan spent most of the time working on the JLEIC project, a sister project of EIC. His broad contribution to the JLEIC project included the electron injection scheme for the JLEIC electron ring using CEBAF; the study of reusing PEP-II RF system in JLEIC electron storage ring; the hadron injection complex and bunch formation scheme; the injection and extraction scheme of the circulating cooling ring and the harmonic RF kicker; the positron beam formation/injection; requirements for various RF systems in JLEIC's sub-accelerators; and RF transient beam loading study for both the electron storage ring and hadron storage ring.
Jiquan started to work for the EIC project in 2020. In the beginning he was focusing on the specification of different RF sub-systems; RF transient in the electron storage ring; bunch formation in the electron injector, as well as the hadron ring. He also led the final stage of the JLEIC harmonic kicker fabrication and proof-of-principal beam test, which could be used for EIC electron injector.
Since 2021, Jiquan has been leading the RF design effort for one of EIC's most challenging SRF cryomodules, the electron storage ring's cryomodule required to handle 2.5 A beam current and provide 800 kW per cavity.

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EIC at JLab Travel Reminders:

1.  When planning EIC travel, remember to use the Travel Request form located on the
EIC at JLab SharePoint Travel site<https://jeffersonlab.sharepoint.com/sites/EICPartnerProject-TJNAF/SitePages/TRAVEL.aspx> (must be logged into SharePoint to access the link).

2.  If you are planning foreign travel, you need to ensure adequate time for the approval process.  All Foreign Travel requests are required to be submitted 30 - 45 days prior to travel dates.

3.  Resolving travel complications after business hours:
o   If any issues arise after hours, the Traveler must directly contact OMEGA FOR AFTER HOURS EMERGENCY ASSISTANCE CALL
1(888)  527-1279 ADVISE ID CODE SM5MI/99MGJEFFERSON

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Safety Shoe Truck

The Saf-Gard- safety shoe vendor will be in ARC parking lot from 9-11:00 a.m. to fill approved PR requisitions. Place your order through your JLab Insight Front Page. Under "Popular Applications", select: E-commerce & Stockroom tab, then sign-on. Under the menu on the left: select "Shop", then select: JLab Stockroom Items- Blue Tab: Select: Filter by Supplier, select: Saf-Gard Safety Shoe Company (2), select: Male or Female, place order<https://jeffersonlab-my.sharepoint.com/:w:/g/personal/cbaker_jlab_org/EUuTOAkhXKxOu-zc3cZtiDkBubXTjXgTIdj03SSHvuNJlQ?e=KZF1ar>.
Safety Shoe Upcoming Dates:
Monday, November 24, 2025
Monday, December 8, 2025
Monday, December 15, 2025

American Red Cross Blood Drive

The upcoming American Red Cross Blood Drive will take place in Applied Research Center (ARC) rm. 126. The Red Cross needs more blood donors! Appointments may be scheduled at redcrossblood.org using the sponsor code TJNAF. New and repeat donors are encouraged to attend. Walk-ins are welcome. All participation is greatly appreciated.
https://www.redcrossblood.org<https://www.redcrossblood.org/>

December 16, 2025 10 a.m. - 2 p.m.

Annual Children’s Holiday Party - Winter Wonderland

You’re invited to attend “Winter Wonderland,” the annual children’s holiday party, on Saturday, Dec. 6, from 10 a.m.-1 p.m. in the CEBAF Center atrium! JAG is excited to welcome all staff, scientific users, contractors and their families to celebrate the holiday season at the event.

Celebrate with complimentary food and beverages (including liquid-nitrogen ice cream!), crafts, games, a bounce house, face painting, and balloon art. Also, there will be a photo opportunity with Santa himself! You won't want to miss it!

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Spread Cheer - Volunteers Are Needed!

JAG needs your help to make the Winter Wonderland party wonderful! Please sign up online<https://misportal.jlab.org/webTools/jag_events/2025_holiday_party> to volunteer and spread cheer at the event. Volunteer as little or as much as you’d like from 10 a.m.-2 p.m. Please note that those volunteering or attending will not be able to charge their time, as this is a volunteer event. Thank you to all of the volunteers who help run the show!

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Show Your Spirit! - Holiday Door-Decorating Contest
The JAG Holiday Door-Decorating Contest kicks off the holiday season! Decorations can go up as early Monday, Nov. 24, and must be taken down by Tuesday, Jan. 6. Please do not incorporate food-based items in your decorations, and make sure all lighting and electronics are Underwriters Laboratories (UL)-approved. To be in the running for awards, please send your name(s) and location to Mary Jo Bailey<mailto:mbailey at jlab.org> no later than Friday, Dec. 12, at 5 p.m. Prizes will be awarded for best overall, geekiest and most original. Judging will take place Monday, Dec. 15, and winners will be announced Tuesday, Dec. 16. For questions, contact Mary Jo Bailey<mailto:mbailey at jlab.org>.
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Toys for Tots Drive - Make the Holidays Brighter
Let’s come together to make the holidays brighter for children in our community! JAG asks all who attend the Winter Wonderland party to consider bringing a new, unwrapped toy to the event on Saturday, Dec. 6, for the lab’s Toys for Tots drive. If you can’t make it to the party, you can drop your toy in collection boxes Starting Monday, Nov. 17, through Friday, Dec. 5, at the following locations:
·         CEBAF Center Atrium
·         Support Service Center (SSC) lobby
·         TED/Test Lab connecting hallway
·         ES&H Building main entrance
·         Machine Control Center (MCC) main entrance
If you have questions about any of the December events, or if you are interested in learning more about the JAG Committee, please contact David Abbott<mailto:abbottd at jlab.org>.

We look forward to kicking off the holiday season with you!

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