<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000'>Hi Paul,<br><br>Generally a good summary.<br><br>When do you plan on coming back to JLAB? Monday? I thought Wednesday. That is when we planned to have the work done.<br><br>We are going to open up more holes than the one's designated to get as many threaded rods installed as possible that do not put force on the light guides. <br><br>The threaded rod will be grade 8.<br><br><div><span name="x"></span>Tim Whitlatch<br>Hall D Engineer<br>Jefferson Lab<br>12050 Jefferson Ave ste 402<br>Newport News, Va 23606<br>757-269-5087<span name="x"></span><br></div><br><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>eugenio@fsu.edu<br><b>To: </b>"GlueX Particle ID Mailing List" <halld-pid@jlab.org><br><b>Cc: </b>"Tom Carstens" <carstens@jlab.org>, "Tim Whitlatch" <whitey@jlab.org>, "Hussein Al Ghoul" <halghoul@fsu.edu><br><b>Sent: </b>Wednesday, February 26, 2014 3:09:20 PM<br><b>Subject: </b>TOF Work plans<br><br>Hi,<br><br>Here is a summary of our plans discussed this past Monday. Please let me know if I missed something or have anything wrong. Also, I would like to confirm the items I have listed (?) as Tom either coordinating or purchasing.<br><br><br><br><br><br>Paul<br><br><br><br>To eliminate over constraining the modules we agreed to open up the TOF support frame to 100.5" x 100.5".<br><br>===Task list====<br>* Open holes in channels<br> - two holes on each channel need to be enlarged by 1/4" on the OD.<br> - the hole location is the 10th hole from the end on both sides, the ~1/4 & ~3/4 location (most have been marked).<br> - including all 8 channels, 16 holes need to be enlarged <br> - Tom will take care of this by Monday (?)<br><br>* Slot-open the bolt holes in Aluminum holding blocks<br> - a 1/2" slot is being machined in each holding block<br> - this will allow the frame and stud movement (1/4" on both sides) while keeping the holders fixed to the light guides<br> - Paul is having the work done at the FSU Machine Shop and will deliver the parts next week<br><br>* Open up TOF frame and square to 100.5"<br> - Tom will coordinate this effort by Monday (?)<br><br>* Replace channel end bolts with threaded rod<br> - first (vertical) TOF layer:<br> --replace outer channel bolts with threaded rod and set nuts <br> -- bolts can be used for the inside channel holes<br> - second (horizontal) TOF layer<br> -- replace both channel bolts with threaded rod and set nuts <br> - Tom will order new rods and nuts for delivery by Monday (?)<br><br>* Replace channel Buna-N rubber (thicker/softer)<br> - first (vertical) TOF layer: <br> --currently 3/32" (50A Durometer) change to 3/16" (40A Durometer)<br> - second (horizontal) TOF layer: <br> --currently 3/16" (60A Durometer) change to 1/4" (40A Durometer)<br> -Paul will order new Buna-N material for Monday<br><br>* Repair remaining TOF module<br> - Hussein will complete the repair of the last damaged TOF module.<br><br>===============================<br><br><br><br><br><br><br><br><br><br><br>--<br>Prof. Paul Eugenio<br>Florida State University<br>Department of Physics<br>Tallahassee, Florida, USA 32306<br><br>(850) 325-0314<br>eugenio@fsu.edu<br><br><br><br><br><br></div><br></div></body></html>