Difference between revisions of "Bubble Chamber Meeting Wednesday January 20, 2016"

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(Created page with "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. == ...")
 
 
(24 intermediate revisions by the same user not shown)
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  Phone number: 1-888-240-2560
 
  Phone number: 1-888-240-2560
 
  Meeting ID: 3528502673#
 
  Meeting ID: 3528502673#
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Moderator Passcode: 5978#
 
 
  Meeting URL: http://bluejeans.com/3528502673
 
  Meeting URL: http://bluejeans.com/3528502673
  
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'''Agenda:'''  
 
'''Agenda:'''  
  
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1- Bubble Chamber work at ANL
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1- GEANT4 Simulation:
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# Gamma Flux: [[media:G4Flux_Sept2015.pdf]] [[media:G4Flux_Sept2015.pptx]]
 +
# Expected Rates:
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## <sup>18</sup>O(γ,α)<sup>14</sup>C with no ThrCut: [[media:O18ga_rate_G4.txt]]
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## <sup>17</sup>O(γ,n)<sup>16</sup>O with:
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### ThrCut = 90 keV: [[media:O17gn_rate_G4_90keV.txt]]
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### ThrCut = 130 keV: [[media:O17gn_rate_G4_130keV.txt]]
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## <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]]
  
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2- Summary of Sept Beam Test
 
  
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3- Sept beam test data analysis
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2- Sept beam test data analysis: [[media:Analyses_Rashi_Jan2016.pdf]] [[media:Analyses_Rashi_Jan2016.pptx]]
  
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4- Discussion of June 2016 beam test
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3- Discussion of June 2016 beam test
  
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5- New beamline design with sweep magnet
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 +
 
 +
 
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----
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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.

Latest revision as of 15:00, 24 January 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 [1] audio conference system.

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


Agenda:

1- GEANT4 Simulation:

  1. Gamma Flux: media:G4Flux_Sept2015.pdf media:G4Flux_Sept2015.pptx
  2. Expected Rates:
    1. 18O(γ,α)14C with no ThrCut: media:O18ga_rate_G4.txt
    2. 17O(γ,n)16O with:
      1. ThrCut = 90 keV: media:O17gn_rate_G4_90keV.txt
      2. ThrCut = 130 keV: media:O17gn_rate_G4_130keV.txt
    3. 14N(γ,p)13C with:
      1. ThrCut = 20 keV: media:N14gp_rate_G4_20keV.txt
      2. 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



Notes from this meeting:

  • In the simulation, the collimator inner radius is correct (8.0 mm).
  • Bubble chamber simulation remaining tasks:
  1. Complete geometry: add stainless steel cube and flanges
  2. Add electron beam energy spread and beam size
  3. Measure fraction of photons that are absorbed in the N2O target as a function of Eγ
  • Next Bubble Chamber beam test will measure 19F(γ,α)15N
  • 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.
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