CLAS Collaboration July 2025

Jul 8, 2025, 7:00 AM → Jul 11, 2025, 7:00 PM US/Eastern

Torggler Auditorium (TFAC 102) (Christopher Newport University)

William Phelps (Christopher Newport University/Jefferson Lab)

Location: Torggler Fine Arts Center, Christopher Newport University

Registration: https://cnu.irisregistration.com/Site/2025clas

Zoom: https://jlab-org.zoomgov.com/j/1610084751 (Password in email to clas_member mailing list sent on 7/7/25)

Tue, July 8

8:00 AM → 10:30 AM Plenary 1

Convener: William Phelps (Christopher Newport University/Jefferson Lab)

8:00 AM Check in and Badging

8:50 AM Welcome & Introductory Remarks

Speaker: William Phelps (Christopher Newport University/Jefferson Lab)

clas_collaboration_welcome_phelps_july_2025.pdf

9:00 AM Update from JLab

Speaker: David Dean (TJNAF)

20250708 CLAS Collab meeting.pptx

9:30 AM Hall-B Status

Speaker: Patrick Achenbach (Jefferson Lab)

Achenbach-HallBStatus-08-07-2025.pdf

10:00 AM Measurement of Beam-Recoil Observables Cx and Cz for K+Λ Photoproduction

Speaker: Daniel Carman (JLab)

ky-cxcz-07112025.pdf

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 12:30 PM Plenary 2

Convener: William Phelps (Christopher Newport University/Jefferson Lab)

11:00 AM CALCOM Update

Speaker: Daniel Carman (JLab)

calcom-update-07082025.pdf

11:30 AM Calibration Task Force

Speaker: Raffaella De Vita (Jefferson Lab)

20250708_calibrationTF.pdf

12:00 PM CLAS Chair Candidate Presentations

Speakers: Bryan McKinnon (University of Glasgow), Gabriel Niculescu (JMU)

CLAS_Chair_Presentation.pdf

12:30 PM → 12:45 PM CLAS Collaboration Group Photo

12:45 PM → 2:00 PM Lunch Break

12:45 PM → 2:00 PM Student & Postdoc Session

Convener: Richard Tyson (Jefferson Lab)

12:45 PM Student & Postdoc Meeting

Speaker: Richard Tyson (Jefferson Lab)

Student_Meeting_July2025.pdf

2:00 PM → 3:30 PM Software Working Group

Convener: Nathan Baltzell (Jefferson Lab)

2:00 PM Introduction

Speaker: Nathan Baltzell (Jefferson Lab)

2:05 PM Scientific Computing @ JLab

Speaker: Brad Sawatzky (Jefferson Lab)

SciComp-Update-CLAS_July2025_Sawatzky.pdf

2:25 PM AHDC/ATOF Software & Calibrations

Speaker: Michael Paolone (New Mexico State University)

2:40 PM AHDC AI Tracking

Speaker: Mathieu Ouillon (Miss State U.)

AI-ALERT_CLASCollaboration_July25.pdf

3:00 PM Containered Analysis Demo

Speaker: Christopher Dilks (Jefferson Lab)

0. Intro

1. User Guide

2. Tutorial

For convenience, image files (SIF) are temporarily stored in /volatile 

You may use the following URIs in commands such as apptainer run to follow along interactively with the presented tutorial:

1. Analysis image from container-forge:

/volatile/clas12/users/dilks/share/analysis-in-containers/analysis_latest.sif

2. Image for analysis-in-containers tutorial:

/volatile/clas12/users/dilks/share/analysis-in-containers/analysis_in_containers_latest.sif

These SIF files are provided so that you do not have to wait for apptainer pull to download and convert them.

If the files have been removed from /volatile, you can pull (download) them using

apptainer pull docker://codecr.jlab.org/hallb/clas12/container-forge/analysis:latest
apptainer pull docker://codecr.jlab.org/hallb/clas12/tutorials/analysis-in-containers/analysis_in_containers:latest

See documentation within the repository links for more info, and the most up-to-date URIs.

3:30 PM → 4:00 PM Coffee Break

4:00 PM → 5:45 PM Software Working Group

Convener: Nathan Baltzell (Jefferson Lab)

4:00 PM Linux/JLab Tools Demo

Speaker: Nathan Baltzell (Jefferson Lab)

4:10 PM DC++: Status & Plans

Speaker: Florian Hauenstein (Jefferson Lab)

DC++.pdf

4:30 PM Forward Tracking to High Luminosity

Speaker: Tongtong Cao (Jefferson Lab)

Forward Tracking to High Luminosity.pdf

5:00 PM Detached Vertexing Analysis Tools

Speaker: Veronique Ziegler (Jefferson Lab)

ColMeetingJuly2025.pdf

5:15 PM A(i)DAPT Software Overview (TBC)

Speaker: Trevor Reed (FIU)

aidapt_demo.pdf

Wed, July 9

8:25 AM → 10:35 AM Deep Processes Working Group

Convener: Silvia Niccolai (IJCLab Orsay)

8:30 AM Introduction

Speaker: Silvia Niccolai (IJCLab Orsay)

DPWG_June2025.pdf

8:35 AM Positive Kaon SIDIS with deuterium target

Speaker: Simone Vallarino

2025_07_09_Vallarino_CLAS_collaboration_meeting.pdf

8:55 AM Cross sections for neutron DVCS

Speaker: Li Xu

cross-section_nDVCS_Jul09.pdf

9:15 AM DVCS on a longitudinally polarized target

Speaker: Samy Polcher Rafael (CEA Saclay - Université Paris Saclay)

pDVCS_colabJuly25.pdf

9:35 AM J/Psi photoproduction on proton and neutron

Speaker: Richard Tyson (Jefferson Lab)

JPsiRGB_CollabMeeting_July2025.pdf

9:55 AM Update on pi0 SIDIS multiplicities and modulations: Radiative Correction studies

Speaker: Valerii Klimenko (Argonne National Laboratory)

Klimenko_CM_July25.pdf

10:15 AM Update on Gmn analysis

Speaker: Jerry Gilfoyle (University of Richmond)

gmnUpdate25.pdf

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 12:55 PM Deep Processes Working Group

Convener: Silvia Niccolai (IJCLab Orsay)

11:00 AM Bonus analysis update

Speaker: Yu-Chun Hung (ODU)

clas12_collaborationMeetings_2025Jul09.pdf

11:20 AM Proton double-spin asymmetry for DIS

Speaker: Derek Holmberg (William and Mary)

Proton Spin Structure in Run Group C.pdf

11:40 AM Deuteron double-spin asymmetry for DIS

Speaker: Darren Upton (Old Dominion University)

DSA from More Than Just the Proton.pdf

12:00 PM RGA Analysis Updates and Studies of Deep Exclusive Processes

Speaker: Latifa Elouadrhiri (Jefferson Lab)

12:30 PM → 2:00 PM Lunch Break

12:30 PM → 2:00 PM Membership Committee Meeting

Speaker: Bryan McKinnon (University of Glasgow)

2:00 PM → 3:30 PM Hadron Spectroscopy Working Group

Convener: Bryan McKinnon (University of Glasgow)

2:00 PM Spectroscopy Results from CLAS

Speaker: Veronique Ziegler (Jefferson Lab)

HSJuly2025.pdf

2:20 PM Contributions from Npi exclusive channels into inclusive cross sections in the resonance region

(remote)

Speaker: Stas Sorokin (Moscow State University)

20250709.pdf

2:40 PM J/ψ Electroproduction analysis in RGA

Speaker: Mariana Tenorio Pita (Old Dominion University)

Collab_July2025.pdf

3:00 PM Two-pion channel cross sections using the CLAS12 RGA pass2

Speaker: Krishna Neupane (USC, Columbia SC)

CLAS_Collaboration_2025_July.pptx

3:30 PM → 4:00 PM Coffee Break

4:00 PM → 6:05 PM Hadron Spectroscopy Working Group: Deep Processes Working Group

Convener: Bryan McKinnon (University of Glasgow)

4:00 PM Update on RG-K Cascade Production

Speaker: Bianca Gualtieri (Florida International University)

BGualtieri_CLAScollab_July25_final.pptx

4:20 PM Recent update on the analysis of Λ(1405) electroproduction with CLAS12

Speaker: Tatsuhiro Ishige (Tohoku University)

ishige_presentation_CLAS_Collaboration_meeting_v2.pdf

4:35 PM Partial Wave Amplitudes of K+K-

Speaker: Charlie Velasquez (University of York)

Partial Wave Amplitudes of K+K- Charlie Velasquez (1).pdf

4:50 PM AI-assisted evaluation of pi^+n electroproduction cross sections from CLAS data

(remote)

Speaker: Andrey Golda (Moscow State University)

AndreyGolda.pdf

Thu, July 10

8:30 AM → 10:50 AM Nuclear Physics Working Group

Convener: Lamiaa El Fassi (Mississippi State U.)

All assigned time slots include at least two minutes for questions; please plan accordingly! 

8:30 AM Introduction and Greetings

Speaker: Lamiaa El Fassi (Mississippi State U.)

LE-July25Meet.pdf

NPWG wikipage: https://clasweb.jlab.org/Hall-B/npwg/index.php/Main_Page

8:35 AM New CLAS cross-section measurements for neutrino experiments

(Remote)

Speaker: Julia Tena Vidal (Tel Aviv University)

CLASJulyCM.pdf

8:50 AM Measuring CLAS12 D(e,e'pi) Cross Sections for e4nu Update

Speaker: Caleb Fogler (Old Dominion University)

2025-07-10_CLAS_cfogler_v1.pdf

9:02 AM Asymmetry in coherent, virtual pion production on 4He

(Remote)

Speaker: David Jenkins (Virginia Tech)

eg6WorkGroup10jul25b.pdf

9:17 AM RG-M Experiments Updates (TBC)

Speaker: Andrew Denniston (MIT)

RGM_Update.pdf

9:37 AM RG-D Experiments: Status and Analysis Plans

Speaker: Mathieu Ouillon (Miss State U.)

RG-D_CLASCollaboration_July25.pdf

9:57 AM RG-D CT Studies

Speaker: Matthew Maynes (Mississippi State University)

RGD_CT_studies.pdf

10:09 AM Study of \pi^- Photoproduction off Deuterium using G10 data

Speaker: Volker Burkert (Jefferson Lab)

Path-forward.pptx

10:30 AM → 11:00 AM Coffee Break

11:00 AM → 1:30 PM Nuclear Physics Working Group

Convener: Lamiaa El Fassi (Mississippi State U.)

All assigned time slots include at least two minutes for questions; please plan accordingly! 

11:00 AM RG-D: Particle Identification and Contamination Studies

(remote)

Speaker: Suman Shrestha (Temple University)

RGD_PID_CONTAM_STUDIES.pdf

11:12 AM RG-E Experiments Calibration and Analysis Updates (TBC)

Speaker: Antonio Radic (UTFSM)

RG-E Experiment update 07-2025.pdf

11:32 AM Status of RG-E Inclusive Analysis

(Remote)

Speaker: Ryan Milton (UC Riverside)

07_10_2025 CLAS collaboration meeting.pdf

11:44 AM The ALERT Experiments: Updates and Plans (TBC)

Speaker: Henry Klest (Argonne National Laboratory)

ALERT Status CLAS Collab 7-10-25.pdf

12:04 PM RG-E Lambda Analysis and ALERT AI-assisted PIDs Update

Speaker: Uditha Weerasinghe (Mississippi State University)

Uditha_CLASMeeting_Summer2025.pdf

12:16 PM The ALERT-SRC Experiment

Speaker: Florian Hauenstein (Jefferson Lab)

ALERT_SRC_clas2025.pdf

12:30 PM → 2:00 PM Lunch

2:00 PM → 3:30 PM PAC 53

Convener: William Phelps (Christopher Newport University/Jefferson Lab)

2:00 PM RG-H Dry Run

Speaker: Marco Contalbrigo (INFN Ferrara)

rgh_250710.pdf

2:30 PM A Measurement of the Coherent J/psi Electroproduction Cross Section off He-4

(Remote)

Speaker: Sangbaek Lee (Argonne National Laboratory)

Coherent_Jpsi_He4_ALERT_July2025_PAC.pdf

3:00 PM Electro- and photo-production of muon pairs with µCLAS12

Speaker: Pierre Chatagnon (Jefferson Lab)

muCLAS12_PAC53.pdf

3:30 PM → 4:00 PM Coffee Break

4:00 PM → 5:00 PM Plenary

Convener: William Phelps (Christopher Newport University/Jefferson Lab)

4:00 PM DVCS on Proton: A machine learning approach for channel selection

Speaker: Juan Sebastian Alvarado (IJCLab)

Summer2025 CLAS12 Meeting.pdf

4:30 PM Partial Wave Decomposition of 𝜋𝜋 Beam Spin Asymmetries

Speaker: Gregory Matousek (Duke University)

Partial Wave Decomposition of 𝜋𝜋 Beam Spin Asymmetries (2).pdf

5:00 PM → 7:00 PM Reception

Fri, July 11

9:00 AM → 10:00 AM Plenary 5

Convener: William Phelps (Christopher Newport University/Jefferson Lab)

9:00 AM Pion-Proton Correlations in eA Scattering

Speaker: Sebouh Paul (UC Riverside)

CLAS CM July 2025_ Pion-Proton Correlations (1).pdf

9:30 AM Address to the CLAS Collaboration

Speaker: Jens Dilling

10:00 AM → 10:30 AM Coffee Break

10:30 AM → 12:00 PM Plenary 6

Convener: William Phelps (Christopher Newport University/Jefferson Lab)

10:30 AM Accelerator Update

Speaker: Michael Tiefenback (JLab)

AcceleratorUpdate_CLAS12Collab_11July2025.odp

AcceleratorUpdate_CLAS12Collab_11July2025.pdf

11:00 AM Calibration Task Force

Speaker: Raffaella De Vita (Jefferson Lab)

20250708_calibrationTF.pdf

11:20 AM Speakers Committee Report

(Virtual)

Speaker: Lucilla Lanza

CSC_July2025.pdf

11:30 AM Membership Committee Report

Speaker: Bryan McKinnon (University of Glasgow)

MemCommJul2025.pdf

11:40 AM Student/Postdoc Report

Speaker: Richard Tyson (Jefferson Lab)

Student_MeetingReview_Jul2025.pdf

11:50 AM Closeout Session

Speaker: William Phelps (Christopher Newport University/Jefferson Lab)

clas_collaboration_closing_phelps_july_2025.pdf

12:00 PM → 1:00 PM Plenary 6: CLAS Business Session

Convener: Patrick Achenbach (Jefferson Lab)

12:00 PM Business Topics

Speaker: Patrick Achenbach (Jefferson Lab)

Achenbach-HallBBusiness-11-07-2025.pdf