View source for Bubble Chamber Meeting Wednesday January 20, 2016

We will meet in TL 2221 on Wednesday January 20 at 3:30 pm EST.

== For those calling in we'll use the Blue Jeans [https://cc.jlab.org/bluejeans] audio conference system. ==
 Phone number: 1-888-240-2560
 Meeting ID: 3528502673#
 Meeting URL: http://bluejeans.com/3528502673


'''Agenda:''' 

1- GEANT4 Simulation:
# Gamma Flux: [[media:G4Flux_Sept2015.pdf]] [[media:G4Flux_Sept2015.pptx]] 
# Expected Rates:
## <sup>18</sup>O(γ,α)<sup>14</sup>C with no ThrCut: [[media:O18ga_rate_G4.txt]]
## <sup>17</sup>O(γ,n)<sup>16</sup>O with:
### ThrCut = 90 keV: [[media:O17gn_rate_G4_90keV.txt]]
### ThrCut = 130 keV: [[media:O17gn_rate_G4_130keV.txt]]
## <sup>14</sup>N(γ,p)<sup>13</sup>C with:
### ThrCut = 20 keV: [[media:N14gp_rate_G4_20keV.txt]]
### ThrCut = 50 keV: [[media:N14gp_rate_G4_50keV.txt]]


2- Sept beam test data analysis: [[media:Analyses_Rashi_Jan2016.pdf]] [[media:Analyses_Rashi_Jan2016.pptx]]

3- Discussion of June 2016 beam test




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'''Notes from this meeting:'''

* In the simulation, the collimator inner radius is correct (8.0 mm).

* Bubble chamber simulation remaining tasks:
# Complete geometry: add stainless steel cube and flanges
# Add electron beam energy spread and beam size
# Measure fraction of photons that are absorbed in the N<sub>2</sub>O target as a function of E<sub>γ</sub>

* Next Bubble Chamber beam test will measure <sup>19</sup>F(γ,α)<sup>15</sup>N

* Old fluorine chamber has a height of 36 inches. Beamline height on the concrete platform is 27 inches. Beamline height before the platform is 42 inches.