[Cuga] JLab Weekly Briefs - a message from Kandice Carter

[Kandice Carter]

To access the full version of the JLab Weekly Briefs, visit: https://www.jlab.org/news/briefs/latest 

February 1 Briefs Excerpts: 

12 GeV Upgrade Update - Hall B 
The Central Time of Flight (CTOF) detector was installed on a temporary stand in Hall B for the upcoming first beam run for CLAS12. The stand reproduces the points on the Solenoid cryostat to which the CTOF must attach in its final configuration following magnet arrival and commissioning. The CTOF was subsequently cabled, brought to operating voltage and checked for light leaks. The High Threshold Cherenkov Counter (HTCC) was moved from its construction area in the TEDF Building to Hall B and placed on the beamline. The tungsten Moeller shield cone was then added, and the HTCC was rolled into place and hooked up to signal and high-voltage cables, after which circulation of the carbon dioxide operating gas was started. The Silicon Vertex Tracker was then brought to Hall B from the Experimental Equipment Lab cleanroom. After some adjustment, it was rolled into its space inside the CTOF, which in turn had been rolled downstream close to the HTCC. The CTOF was stopped just short of what will be its final operating position in the future in order to accommodate a temporary target for the first beam run. This target is a carbon fiber that is mounted onto a beam harp and placed just at the entrance to the HTCC gas volume. The upstream and downstream sections of beamline were added and pumped out. Finally, some lead bricks were placed at the spot on the existing tagger magnet where the beamline exits to act as extra shielding for the upcoming first beam-tuning exercises. 

Physics - Hall A Update 
Hall A is celebrating the timely, successful completion of the Super BigBite Spectrometer (SBS) project. This DOE capital equipment project has successfully constructed 40 planes of large Gas Electron Multiplier (GEM) tracking detectors, a dipole magnet and associated moveable support and beamline systems, and a novel scintillator-based coordinate detector. Five approved experiments will use this new spectrometer, which will also involve a new hadron calorimeter, electron calorimeter and state-of-the-art polarized helium-3 target. Hall A received additional good news this week with the announcement that Critical Decision-0 was awarded (although paused for funding) for the MOLLER experiment. 

Publications Training Offered Feb. 24 
If you’re new to the lab or are writing your first journal article or proceedings paper, the next Publications Training and Refresher course is for you! This 45-60 minute course will be held on Friday, Feb. 24, at 10:00 a.m. in CEBAF Center room F224-225. If you plan to attend, let Kim Edwards know by emailing kindrew at jlab.org no later than Thursday, Feb. 23. 

Tornado Warning Siren Test Set for Friday, Feb. 3 
Jefferson Lab's tornado warning siren will undergo its monthly operational test at 10:30 a.m. on Friday, Feb. 3. Don't respond to the siren; this is a test of the siren system and not a personnel response exercise. Individuals planning to be in the Central Materials Storage Area (where the siren is located) while the test is taking place must have with them and wear two layers of hearing protection. 

People in the News 
Jefferson Lab's Chief Technology Officer, Drew Weisenberger, was in the news last week at the University of Regina for work involving PhytoPET. Read all about it in the Regina Leader-Post: http://leaderpost.com/business/agriculture/testing-the-health-of-plants-at-the-u-of-r 

To access the full version of the JLab Weekly Briefs, visit: https://www.jlab.org/news/briefs/latest 
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