[Cuga] JLab Weekly - a message from the JLab Communications Office

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JLab Weekly - <span class="Object" id="OBJ_PREFIX_DWT17589_com_zimbra_date"><span class="Object" id="OBJ_PREFIX_DWT17630_com_zimbra_date">October 17</span></span>, 2018 			
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IN THIS ISSUE 

• Laser Safety 

• DOE Town Hall 

• Colloquium Today 

• Holiday Update 

• BEAMS Role Models 

• Travel Reminder 

• In the News: Gluons 

• Publications 

• Vacation Donation 
	
October 17 , 2018 


Jefferson Lab Spotlight: Joanna Griffin 

Graffic Designer Joanna Griffin combines a love of art with an appreciation of diverse cultures in the illustrations she creates for the Jefferson Lab Community. Read more here . 

				
		
		

THEORETICAL AND COMPUTATIONAL PHYSICS 
The Joint Physics Analysis Center (JPAC) has extended its hadron spectroscopy analysis to include the phenomenological description of three-particle reactions . Within the isobar approximation, the connected part of the 3 → 3 amplitude is first expressed as a sum over initial and final pairs and then is expanded into a truncated partial wave series. The analytic structure of the resulting unitarity equation is discussed, and analogies are made with formalisms for extracting 3->3 scattering amplitudes in lattice QCD. 


ESH&Q 
Laser Safety at Jefferson Lab 
According to the Occupational Safety and Health Administration, LASER is an acronym that stands for Light Amplification by Stimulated Emission of Radiation. The laser produces an intense, highly directional beam of light. The human body is vulnerable to the output of certain lasers, and under certain circumstances, exposure can result in damage to the eye and skin. The most common cause of laser-induced tissue damage is thermal in nature, where the tissue proteins are denatured due to the temperature rise following absorption of laser energy. ES&H Manual Chapter 6410 Laser Safety Program addresses hazard mitigation and preventive measures for laser use here at Jefferson Lab. 


GENERAL ANNOUNCEMENTS 
Lab Community Invited to Watch DOE Employee Town Hall Today at Noon 
Under Secretary for Science Paul Dabbar will visit DOE’s Germantown campus on Wednesday , Oct. 17, and lead a town hall-style conversation in the main auditorium there, noon-1 p.m. Dabbar will provide an update on activities in the S4 portfolio and respond to questions. The town hall will be broadcast live in the CEBAF Center Auditorium for interested members of the Jefferson Lab community. 

Today 's Colloquium: Physics from the Gravitational and Electromagnetic Waves of a Neutron Star Merger 
The recent detection of gravitational waves and associated electromagnetic emission from a binary neutron star merger has illuminated the physics of strong gravity and dense matter and has addressed long standing questions as to the origin of the heaviest elements in the universe. Daniel Kasen — University of California, Berkeley and Lawrence Berkeley National Lab - will review our physical understanding of compact object mergers and will describe how observations of gravitational waves, high-energy photons and radioactively powered optical emission have important physical implications, including constraints on the speed of gravity, the equation of state of nuclear matter, and the nucleosynthesis of the heavy elements. The event will take place in the CEBAF Center Auditorium on Oct. 17 at 3 p.m. 



Jefferson Lab 2019 Holiday Calendar Updated 
The 2019 holiday calendar, which lists Jefferson Lab closure dates for calendar year 2019, has been updated with revised information. View the revised calendar by clicking the link. In addition, you can find upcoming holidays for both 2018 and 2019 on the At-A-Glance calendar . 

Make an Impact on a Young Mind: Be a BEAMS Role Model 
Local 5th grade students participating in Jefferson Lab’s Becoming Enthusiastic About Math and Science program will begin their visits to the laboratory for hands-on science and positive interaction this month. To help open the door to STEM careers for these future scientists, the Science Education group is seeking volunteers to interact with the kids in short Role Model visits for the 2018-2019 school year. For more information and to volunteer, see the full memo . 

Business Travel Reminder: Travel Arranged by Another Institution 
JSA staff are reminded that all business travel, even when arranged and paid for by another institution, requires an approved JSA Travel Authorization. When such travel is to a destination outside the United States, a country clearance and DOE Foreign Management System (FTMS) approval are also required. Employees electing to travel without an approved travel authorization or to a foreign country without FTMS approval are assumed to be on personal travel, must charge their time to vacation or LWOP if their vacation is exhausted, and may not charge time to the DOE contract. If you have any questions about this reminder, contact Travel Services at travels at jlab.org . 

In the News: More Gluons in the Pion 
The American Physical Society’s Physics website has published a synopsis on a recent paper published in Physical Review Letters. The paper, which features a combined analysis of collider data, found that the gluon contribution to the pion is three times larger than thought. 

CONTACT 
The JLab Weekly provides information on the status of safety, accelerator operations, experiments, reviews, upcoming activities and special events. Deadline for submission is every Tuesday by 10 a.m. Submit new items to: the Communications Office or contact Kandice Carter at x7263. 

		
PUBLISHED JOURNAL ARTICLES 


Oct. 7-13, 2018 

Yi-Bo Yang, Ming Gong, Jian Liang, Huey-Wen Lin, Keh-Fei Liu, Dimitra Pefkou, and Phiala Shanahan (χQCD Collaboration). "Nonperturbatively renormalized glue momentum fraction at the physical pion mass from lattice QCD." Phys. Rev. D 98 , 074506 (2018). 

P. C. Barry, N. Sato, W. Melnitchouk, and Chueng-Ryong Ji (Jefferson Lab Angular Momentum (JAM) Collaboration). "First Monte Carlo Global QCD Analysis of Pion Parton Distributions." Phys. Rev. Lett. 121 , 152001 (2018) . 

N. Hirlinger Saylor et al. (CLAS Collaboration). "Measurement of unpolarized and polarized cross sections for deeply virtual Compton scattering on the proton at Jefferson Laboratory with CLAS." Phys. Rev. C 98 , 045203 (2018) . 

Remember to submit your papers for approval to the Jefferson Lab Publications database . 

Publications Refresher Offered Oct. 23 
The next Publications Refresher Course will take place Tuesday , Oct. 23, at 3:30 p.m. in TED Bldg. Room 2559. The course includes a demonstration of how to submit and how to review your publications, and ORCID and DOE PAGES will be discussed. Bring any questions you may have about this process. If you plan to attend, R.S.V.P. no later than close of business on Monday , Oct. 22, to Kim Edwards . 	

UPCOMING EVENTS 
Oct. 17: Colloquium 
Oct. 19: American Red Cross Blood Drive 
Oct. 24: C.R.A.S.E. Seminar 
Oct. 24: JAG Tailgate 
Oct. 29-Nov. 1: EIC Accelerator Collaboration Meeting 
Oct. 31: Colloquium 


IN CASE YOU MISSED IT 
• C.R.A.S.E. Lunchtime Seminar 

• JAG Tailgate 


HISTORY PHOTO OF THE WEEK 



This week's History Archives Photo of the Week travels back to the 2000 JLab Fall Festival and features a punkin chunkin trebuchet. 
	
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