Bubble Chamber Meeting Tuesday May 12, 2015

We will meet in TL 2221 on Tuesday May 12 at 3:30 pm EST.

For those calling in we'll use the Blue Jeans [1] audio conference system.

Phone number: 1-888-240-2560
Meeting ID: 3528502673#
Meeting URL: http://bluejeans.com/3528502673

Agenda:

1- Bubble Chamber progress at Argonne

2- JLab Summer 2015 Schedule:

• Timeline: media:SAD_Summer2015_Timeline.pdf media:SAD_Summer2015_Timeline.pptx
• Task List: media:SAD_Summer2015_TaskList.pdf media:SAD_Summer2015_TaskList.docx

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Notes from this meeting:

• Bubble Chamber:

1. Tried few possible solutions to get rid of the mercury droplets on the inner wall of the glass cell but with no luck so far:
   1. Tried coating the inner glass with Teflon
   2. Tried tapping on glass window
   3. Tried strong magnet
   4. Will try laser beam to heat mercury droplets
2. There is a discussion of using CO2 instead of N2O (now we have to deal with background instead of background).
3. We may want to use C3F8 for our engineering run this summer. This gas has very similar operational parameters as either N2O or C02.

• The State of Virginia reporting limit for mercury brought on-site is 10.0 lbs. This is about 4536 grams or 336 mL.
• How are we going to ship mercury to JLab? (i.e., in glass cell, or in reservoir).
• In Virginia, N2O is considered a drug.