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 solution to get rid of the mercury droplets on the inner glass wall 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 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 parameter as either N2O or C02.

• Virginia state limit on mercury is 10 lb. or ( ml).
• How we are going to ship mercury to JLab? (i.e., in glass cell, or in reservoir).
• In Virginia, N2O is considered a drug.