Bubble Chamber Meeting Wednesday December 9, 2015

We will meet in TL 2221 on Wednesday December 9 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- Experiment Schedule (listed as Injector Facility Development Time): [2]

2- Bubble Chamber work at ANL

3- Sept beam test data analysis: media:Rate_N2O.pdf media:Rate_N2O.pptx

4- Discussion of June 2016 beam test: media:sigma_f19ga_low.pdf

5- Summary of Sept Beam Test: media:BeamTest_Summary_II_Sept2015.pdf media:BeamTest_Summary_II_Sept2015.pptx

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Notes from this meeting:

• Schedule in 2016:

1. Beam Test Run II: May 30 – June 20
2. Beam Test Run III: Aug 15 – Aug 29
3. Installation of chamber in Injector can be in:
   1. April 14 – April 30, 2016 (while accelerator scheduled for Cryo Configuration Change), or
   2. During first week of Run II.
4. Modification to beamline can be during:
   1. Winter Shutdown (Jan 4 – Jan 27), or
   2. April 14 – April 30, 2016

• Brad is preparing to change chamber to single fluid with new cooling system.

1. Do we want to change to a collimator inside chamber? made of silver instead of copper?
2. Do we want to use hydraulic oil with higher content of hydrogen to help moderate neutrons?

• Recent data analysis results:

1. cosmic rate in Fiducial volume at JLab Injector is about 10^-3 Hz (or 1 events every 15 minutes) – one order of magnitude smaller than HIGS or Argonne (due to 20 ft of earth and water shielding at injector).