JLab Weekly
Briefs
is an ongoing publication providing information on the status of
safety, accelerator operations, experiments, free-electron laser,
reviews, upcoming activities and special events. Deadline for
submission is every Tuesday by 10 a.m. Submit new items to: Public Affairs or contact Kandice
Carter at x7263.
Archives
|
|
Jefferson Lab Weekly Briefs
October 21, 2009
12 GeV Upgrade
The two FY10 procurements for 12 GeV civil construction are on schedule
for award in the second fiscal quarter. The solicitation for the North
and South Access Building Additions is being prepared by the JLab
Procurement Group, and the site visit will be held in the beginning of
November. This contract includes 1800-square-foot additions to each of
the access buildings and new electrical unit substations for the
accelerator power supplies to be installed in these buildings. The
other FY10 civil construction procurement is the Central Helium
Liquefier (CHL) Utility Upgrades, cooling towers and transformers, to
support the CHL #2 compressors.
Physics
For the past week, experiment E05-109, HAPPEx-III, a measurement of the
nucleon strange form factors at high Q2, has taken
production data under excellent beam conditions, both with respect to
helicity-correlated properties and background conditions in the Compton
polarimeter in Hall A.
Last Chance to Submit Your
APS April Meeting Abstract
The deadline
for receipt of abstracts is Friday, Oct. 23, at 5 p.m. EDT (2 p.m.
PDT).
The 2010
APS April Meeting will take place at the Marriott Wardman Park
Hotel in Washington, DC. Because the April Meeting will be held in
conjunction with the annual winter meeting of the American Association
of Physics Teachers (AAPT), it has been moved to February.
Accelerator
The accelerator has been running well with low trip rates. On
Thursday, the injector was optimized to deliver better beam. Several
minor issues were addressed this week, including: the
insulating vacuum pump for zone 1L03 failed and was replaced; the Arc1
Box Supply failed, and the power supply was replaced; the
radiofrequency
separators tripped off twice; and a couple of trim rack power supplies
were
replaced.
Free-Electron Laser
The FEL had a good week of running tests for beam, a Colorado
State optics study and one user test. The gun continues to operate
exceptionally, maintaining its quantum efficiency at operational levels
over the entire week without additional cesiation. Installation and
checkout of the ultraviolet beamline also made great progress; the FEL
team intends to thread beam through the line for the first time next
week.
Theory Center
Members of the JLab lattice QCD group have calculated the spectrum of
mesons composed of quarks with masses around that of the strange quark.
The results <arXiv:0909.0200>
include the first determination of the mass of a spin-4 meson, the
identification of states with exotic quantum numbers and a
vector-hybrid candidate. The next steps are to lower the quark masses
and to develop methods for dealing with two-particle states, before
eventually calculating meson-photon couplings. This program of
calculations will inform expected production rates for GlueX at 12 GeV,
as well as providing the ab initio predictions for the meson masses
demanded by experiment.
JLab's Safety Numbers
98 Days since Last Recordable Accident (JLab record:
331)
406 Days since Last Lost Workday Accident (JLab record: 676)
JLab Calendar of Events
Oct.
28: William F. Brinkman, Director of DOE's Office of Science,
visits JLab
Nov. 1: Daylight Saving Time ends
Nov. 12: Safety
Shoe Vendor onsite
Nov. 16: Women
in Science and Engineering Workshop
Nov. 24-25: Thanksgiving
holidays - JLab closed
Dec. 10: Safety Shoe Vendor onsite
Dec. 24 - Jan. 1: Winter
holidays/Shutdown days - JLab closed
|
Environment, Safety, Health & Quality
Distracted Driving
Eighty percent of all crashes and 65 percent of all near-crashes
recently studied by the Virginia Tech Transportation Institute involved
driver inattention within three seconds of the crash. For instance, if
you are driving 45 mph and you look down for two seconds, you will
have traveled 132 feet effectively 'blind' to hazards. If a hazard
presented itself at the same speed, it would normally take you 172 feet
to react, hit the brake and stop without losing control.
The following
information was developed by various organizations (in parentheses) to
help make people aware of the hazards of driving while distracted:
- Distraction from cell phone use while driving
(hand-held or hands-free)
extends a driver's reaction as much as having a blood alcohol
concentration at the legal limit of .08 percent. (University of Utah);
- The number one source of driver inattention is use of
a
wireless device. (Virginia Tech/NHTSA);
- Drivers that use cell phones are four times as likely
to get into
crashes serious enough to injure themselves. (NHTSA, Insurance
Institute for Highway Safety);
- 10 percent of drivers aged 16-24 are on
their phone at any one time;
- Driving while distracted is a factor in 25 percent of
police-reported crashes;
- Driving while using a cell phone reduces the amount
of brain activity associated with driving by 37 percent (Carnegie
Mellon).
For more information, visit the Drive
Smart Virginia website.
Computing and Networking Infrastructure
Tips for Curtailing Spam
Getting a lot of spam in your e-mail inbox? JLab has contracted with
MXLogic to filter viruses and spam out of incoming e-mail. There are
several methods you can employ to further curtail the amount of spam
that reaches your inbox. The simplest method is to forward spam
messages to spam@mxlogic.com - this trains the filters at MXLogic to
recognize such messages as spam; it may take a few forwarded e-mails to
work. Additional, more involved steps can be found on the JLab E-mail
Filtration Services webpage.
Announcements
Performance Appraisals Update
Supervisors have until Tuesday, Oct. 27 to meet with
employees to discuss FY10 expectations and self-assessments and
complete draft evaluations. If you are offsite, you can stay on track
by using a PIN; you can get your PIN from Bruce Ullman at x7170. Check
out the entire timeline
here and access the system here.
Hand Sanitizer Still
Available
To minimize the spread of flu this season, JLab purchased bottles of
hand sanitizer and wipes for distribution to staff and users for
disinfecting hands and common-use workplace surfaces, such as phones
and keyboards. One 8-ounce bottle of hand sanitizer and 10 disinfecting
wipes are available for each individual. These materials are for use in
the workplace; they are not meant to be taken home. Use only as
indicated on the product label. If you didn't pick up your personal
allotment last week, you can obtain them from the Technical Stockroom,
Bldg. 90, between 8 a.m. and 4 p.m., Monday-Friday. If you have any
questions, contact x7225 or x7233.
Access Your United Way
Pledge Form Electronically
Donors can access the United Way pledge form electronically this year.
Simply print the form available at this link,
fill it out and send it with any check payments attached to Joshua
Cameron, CEBAF Center, room B214, MS 12B by Monday, Nov. 2. As always
with charitable donations, make a copy of the signed form for your
records.
If you wish to use the traditional form, it is available for pickup at
the following locations: CEBAF Center Lobby, VARC Lobby, ARC Lobby,
Test Lab 2nd Floor Lobby and MCC Lobby. Detach and keep the pink carbon
for your personal record and send the rest of the completed form, along
with any check payments attached, to Joshua Cameron.
|
|
