April 9, 2020 - ME/INJ/CIS/CASA

Meeting Info

We will meet Thursday @ 10am EDT via BlueJeans
Meeting URL (for video and/or audio call in): https://bluejeans.com/909497334
Phone number (for audio call in): 1-888-240-2560
Meeting ID: 909497334#

This week's list

• Review the ME layout, it's coming together!
• Asking Christian Whalen S&R if we can ship small parts to home:

This was proposed at the beginning of this crisis and the answer was no. We currently are coming in to the lab to do processing of Received item on Fridays from 8am to 5pm and pass them out to folks that come to S&R. We’ve worked out a way to sanitize the packages and keep the social distancing rules to keep everyone safe.

• Lakshmi model of longer rectangular PSS kicker magnet on spool
• Status on parts deliveries

MDC BPMs/Spools arriving 4/13-4/16, contact Whalen to put stuff in 1137

Solenoid fixtures (deliveries & distributions on Friday's)

• Alicia is using Jay's Wien field maps here:

/a/opsuser/benesch/magnets/inj_maps
README_wien
Wien_B_90G.txt
Wien_E_13333V_cm.txt

• Carlos is looking at original CEBAF Dunham electrode shape media:Electrode profile ARC18130.pdf

• Gary knocking out fixture drawings:

Section 1		
:Section 1 solenoid assembly	https://misportal.jlab.org/jlabDocs/document.seam?id=124779&cid=6640
:Solenoid fxiture itself	https://misportal.jlab.org/jlabDocs/document.seam?id=124780&cid=6649
:Solenoid fixture spacer	https://misportal.jlab.org/jlabDocs/document.seam?id=124781&cid=6654
Section 2	
:MFX solenoid fixture assembly	https://misportal.jlab.org/jlabDocs/docDownload/125005
:Y-Laser chamber girder holes	https://misportal.jlab.org/jlabDocs/docDownload/100043
Section 3		
General		
:Ion Pump support bracket	https://misportal.jlab.org/jlabDocs/docDownload/125003
:Ion pump vee block	        https://misportal.jlab.org/jlabDocs/docDownload/125006
:Vee block angle 5"	        https://misportal.jlab.org/jlabDocs/docDownload/125004
:Vee block angle 2"	        https://misportal.jlab.org/jlabDocs/docDownload/125000

Last Week's List

• ME providing CAD models to look at and compare w/ 2D dimensioned layout media:beamlinelayoutmarch26.pdf

Now on Link to AIPINJ OneDrive folder, then they're in the "20.03.26 Beamline Screen Shots".

MFX before A1 moves further upstream on spool

A2 is now a cube, instead of a cross

harp before A2 is rotated 45 deg CW looking downstream, there is a viewer on it too

• Danny working w/ MDC so their BPM shop drawings match his submitted drawing

the BPM cans from MDC are due to ship april 13th.

• Joe finding status of BPM feed through delivery

Requested date is 4/25

the BPM antennae are due to ship: a quantity of 7 in three weeks, the balance on may 7th.

• ME working on finishing solenoid fixture designs
• Marcy checking on top hat configuration for Y-chamber media:200326_viewer shield.pdf
• ME can go ahead order spools for Sections 2 & 3
• Shaun add "stay clear" zone of camera to model

Joe measured 4" dia x 6" length tube

• Danny check with Milhous & Jlab people for dipole design

Yes, nice examples. Jay OK. Joe OK. Req submitted & signed

• Reza talk out with Curt or Rick about power needed and controls desired
• DP can, will new $$$ NEG's fit or not
• Marcy get quotes on A1/A2 cubes and 6-way cross w/ R-R
• Decide on A1 media:200326_aperture 1.pdf insert depths
• Finalize A2 media:200326_aperture 2.pdf in layout, need to wind coils now too
• Scott figure out how to control [1], set limits, positions, use encoder w/ stac5

ordered a stac5

• Let Joe Meyers know what color to paint solenoids

Lime

• Riad - will magnetic field of first coil reach photocathode? will it affect solenoids?

Field map: media:BH_Haimson_Coils.xlsx => Field extends to 8 cm from center of magnet.

• Carlos/Gabriel evaluate model for smaller gap Wien filter
• Lakshmi status of PSS coil models
• Dennis turn elegant model values into expected magnet currents.

Using the 2020-03-26 layout: Media:magnet_currents.ods

• Alicia show simulations of beams, evaluate layout for transmission and settings needed
• Joe - is the distance from MFG-A to upstream steering coil sufficient?
• Previous to-do list...https://wiki.jlab.org/ciswiki/index.php/March_20,_2020_-_ME/INJ/CIS

Follow-up meeting - CEBAF vacuum modeling

• Vacuum simulations media:vacuum_Simulations_7April2020.pptx