PREX/CREX May 11 2017 1:00pm EDT

From PREX Wiki
Jump to navigationJump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Back to Main Page >> PREX/CREX_Teleconferences

previous meeting << >> following meeting


Logistic information

 BlueJeans calling instructions:
 Toll-Free Number (U.S.&  Canada):  888-240-2560
 International toll number:         408-740-7256
 PARTICIPANT CODE:                  913380354#
 Room IRL:                            CEBAF F227


Agenda

  1. Caryn: Q1 fringe calculation haplog 3408
    • look at the slides in att7
    • BM: where is the beam in the figures? KP: the center. on slide 2 the circles are the appertures for the Q1
    • CP: the gradiants are 20% smaller
    • SR: since everything is on the order of 10s of gaus/cm, so we should not worry about it. KP: this is a question because of the problems that APEX is having.
    • KP: the point is that this should be good enough for the ERR if we don't have a full result from Juliette
    • SR: we should calculate the field integral. KP: will do that.
  2. Juliette: Q1 fringe field in TOSCA haplog 3409
    • JM: found a configuration that works in TOSCA. Now have fields for both quads and can get a field in between for each. They will cancel. Plan is to merge the 2 quads and 1 septum into a single simulation and run over night.
    • JM: this is a simplified model. I would be confident to use this for optics. The stray field around the beamline is probably good enough.
    • KP: asked to evaluate fields but no-one expects that to be a significant problem. Secondly evaluate if the fringe from the septum will produce another field with the iron in the Q1.
  3. Kent (for Lorenzo): Activation plots haplog 3410
    • KP: he has some dose cycle (still need to get details). He shows in att3 after 1 month of cooldown. Red is 1000 rem/h/cm2.
    • KP: it's not clear what the radiation from the beampipe is.
    • SR: this is all on contact.
    • KP: att 1 is the spectrum of stuff coming off the collimator (photons and electrons). According to this plot, beta is smaller and softer (below 1MeV). The gammas are about 100 times more.
    • KP: Alan G has been working on how to remove this collimator. He has a nice way to do a flange that is similar to a clamp simplifying the de-installation process.

Attendance

Tyler K, Tao Y, Juliette M, Kent P, Silviu C, Bob M, KK, Sanghwa P, Ciprian G, Caryn P, Dustin M,

Excused:

Retrieved from "https://prex.jlab.org/wiki/index.php?title=PREX/CREX_May_11_2017_1:00pm_EDT&oldid=2098"