Difference between revisions of "Table of 12 GeV Beam Energy Measurements"

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* The MCC Hall C energy measurement tool needs to be updated to have the correct dipole map. For now need to use separate code to calculate the beam energy using the current determined by the Hall C energy measurement.  
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* The MCC Hall C energy measurement tool was updated on May 16th 2019 to fix a problem that caused it to give the wrong beam energy. [https://logbooks.jlab.org/entry/3682639 See elog]. The logbook links, before May 16th 2019, will show the results of beam energy when there was a problem in the code.  The correct beam energies are in the table and they were calculated using a separate code using the dipole string current listed in table.
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* Synchrotron radiation is calculated for the full 34.3 deg bend of the Hall C dipole arc.
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* June 20th 2019 , beam energy measurement the arcdipole magnets were only cycled to 270 amps. Normal cycle is to 494 amps. [https://logbooks.jlab.org/entry/3696646  Elog entry] summarizes the workto get the power supplies to cycle to 494 amps. [https://logbooks.jlab.org/entry/3696467 Elog entry] by Jay about the cycling to 400 amps.
  
 
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{|border="1" align="center"
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! Date  !!  Logbook entry !! Current !! Beam energy  !! Sync rad !! Hallc:p !!  1- Ehall/Eb
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! Date  !!  Logbook entry !! Current !! Beam energy  !! Sync rad !! Hallc:p !!  (Beam Energy)/Hallc:p - 1
 
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!Dec 12 2017  !! https://logbooks.jlab.org/entry/3503087 !! 92.345 !! 2.22178 +/- 0.00236 !!  !! !!
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!Dec 12 2017  !! https://logbooks.jlab.org/entry/3503087 !! 92.345 !! 2.22178 +/- 0.00236 !!  !! 2214.36!! 0.0033
 
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! Jan 2018 !! https://logbooks.jlab.org/entry/3516186  !! 268.150 !! 6.42765 +/- 0.00306 !! !!  !!
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! Jan 18 2018 !! https://logbooks.jlab.org/entry/3516186  !! 268.150 !! 6.42765 +/- 0.00306 !! 0.00035 !!6404.37 !! 0.0036
 
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! April 30 2018 !! https://logbooks.jlab.org/entry/3569862 !! 443.656 !! 10.60314 +/- 0.00415 !! !! !!
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! April 30 2018 !! https://logbooks.jlab.org/entry/3569862 !! 443.656 !! 10.60314 +/- 0.00415 !! 0.00265 !!10597.7 !!0.0005
 
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! Oct 4 2018 !!  https://logbooks.jlab.org/entry/3604084 !! 443.487 !! 10.59915 +/- 0.00415 !! !!  !!
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! Oct 4 2018 !!  https://logbooks.jlab.org/entry/3604084 !! 443.487 !! 10.59915 +/- 0.00415 !! 0.00265 !!10597.6 !!0.0001
 
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!  Dec 4 2018 !! https://logbooks.jlab.org/entry/3634940 !! 159.6633 !! 3.83345 +/- 0.0026  !! !! 3.82120 !! -0.003
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!  Dec 4 2018 !! https://logbooks.jlab.org/entry/3634940 !! 159.6633 !! 3.83345 +/- 0.0026  !! !! 3821.20  !!0.0032
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!  Dec 14 2018 !! https://logbooks.jlab.org/entry/3638789 !! 205.523 !! 4.94090 +/- 0.0028  !! !! 4917.88  !! 0.0047
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! March 13 2019 !! https://logbooks.jlab.org/entry/3667208 !! 417.182 !! 10.21404 +/- 0.00404 !!0.00265 !! 10205.4 !!0.0008
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! March 22 2019 !! https://logbooks.jlab.org/entry/3671165 !! 258.207 !! 6.19009 +/- 0.00302 !! 0.00 !! 6169.28 !!0.0034
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! March 28 2019 !! https://logbooks.jlab.org/entry/3673353 !! 342.822 !!8.20883 +/- 0.00349 !!0.00095 !! 8184.96 !!0.0029
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! **June 20 2019 !! https://logbooks.jlab.org/entry/3691774 !! 115.821 !! 2.783625 +/- 0.00243  !! 0.00 !! 2772.02 !! 0.0041
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! July 10 2019 !! https://logbooks.jlab.org/entry/3701511 !! 152.424 !!3.66017 +/- 0.00256 !! 0.00 !! 3649.06 !! 0.0030
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! July 29 2019 !! https://logbooks.jlab.org/entry/3711839  !! 189.992 !! 4.55974 +/- 0.00268 !! 0.00 !!4546.49 !! 0.0029
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! Dec 19 2019 !!  https://logbooks.jlab.org/entry/3756354  !! 90.6584 !! 2.18151 +/- 0.00237 !! 0.000 !! 2174.23  !! 0.0033
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! Feb 20 2020 !!  https://logbooks.jlab.org/entry/3788373  !! 434.739 !! 10.39269 +/- 0.00409 !!0.00244  !!  10386.2 !! 0.00062 
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! Aug 19 2020 !!  https://logbooks.jlab.org/entry/3830781  !! 434.655 !! 10.39069 +/- 0.00409 !!0.00244  !! 10385.2 !! 0.00053 
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! Sept 18 2020 !!  https://logbooks.jlab.org/entry/3851231  !! 90.7084 !! 2.182708 +/- 0.00236  !! 0.00 !!2176.17  !! 0.0030
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! Sept 20 2021 !!  https://logbooks.jlab.org/entry/3909335  !! 383.336 !!  9.172705 +/- 0.00374 !! 0.0014 !! 9161.64  !! 0.0012
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! Nov 7 2021 !!  https://logbooks.jlab.org/entry/3938406  !!  !!  5.984792 +/- 0.00299 !! 0.0  !!  5965.1  !! 0.0033
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! Nov 16 2021 !!  https://logbooks.jlab.org/entry/3944894  !!  !!  9.878901 +/- 0.00395 !! 0.0020  !! 9866.5  !! 0.0013
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! Dec 2 2021 !!  https://logbooks.jlab.org/entry/3955017  !!  !!  7.937662 +/- 0.00342 !! 0.0 !! 7914.42  !! 0.0029
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! Jan 9  2022 !!  https://logbooks.jlab.org/entry/3968977  !! 331.424 !! 7.937448 +/- 0.00342  !! 0.0 !!  !!
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! Jun 12  2022 !!  https://logbooks.jlab.org/entry/4001821 !! 441.374 !! 10.549355 +/- 0.0041371  !! 0.0026!! 10539.2 !! 0.00096
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! Aug 12  2022 !! https://logbooks.jlab.org/entry/4027952  !! 354.143 !! 8.478619 +/- 0.003554  !! 0.0!! 8457.9 !! 0.0025
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! Aug 23  2022 !! https://logbooks.jlab.org/entry/4033282  !! 266.767 !! 6.394701 +/- 0.003055  !! 0.0!! 6371.62 !! 0.0036
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! Sep 19  2023 !! https://logbooks.jlab.org/entry/4182724 !! 441.164 !! 10.544427 +/- 0.0041357  !! 0.0026  !! 10537.8 !! 0.00063
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! Nov 30  2023 !! https://logbooks.jlab.org/entry/4229120  !! 354.075 !! 8.47699 +/- 0.0035536  !! 0.0  !! 8457.88 !! 0.0022
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! Mar 12  2024 !! https://logbooks.jlab.org/entry/4265782  !! 266.851 !! 6.39670 +/- 0.003056  !! 0.0  !! 6369.28  !! 0.0043
 
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!  Dec 14 2018 !! https://logbooks.jlab.org/entry/3638789 !! 205.523 !! 4.94090 +/- 0.0028  !! !! 4.91788  !! -0.0046
 
 
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Latest revision as of 16:05, 5 June 2024

  • The MCC Hall C energy measurement tool was updated on May 16th 2019 to fix a problem that caused it to give the wrong beam energy. See elog. The logbook links, before May 16th 2019, will show the results of beam energy when there was a problem in the code. The correct beam energies are in the table and they were calculated using a separate code using the dipole string current listed in table.
  • Synchrotron radiation is calculated for the full 34.3 deg bend of the Hall C dipole arc.
  • June 20th 2019 , beam energy measurement the arcdipole magnets were only cycled to 270 amps. Normal cycle is to 494 amps. Elog entry summarizes the workto get the power supplies to cycle to 494 amps. Elog entry by Jay about the cycling to 400 amps.
Date Logbook entry Current Beam energy Sync rad Hallc:p (Beam Energy)/Hallc:p - 1
Dec 12 2017 https://logbooks.jlab.org/entry/3503087 92.345 2.22178 +/- 0.00236 2214.36 0.0033
Jan 18 2018 https://logbooks.jlab.org/entry/3516186 268.150 6.42765 +/- 0.00306 0.00035 6404.37 0.0036
April 30 2018 https://logbooks.jlab.org/entry/3569862 443.656 10.60314 +/- 0.00415 0.00265 10597.7 0.0005
Oct 4 2018 https://logbooks.jlab.org/entry/3604084 443.487 10.59915 +/- 0.00415 0.00265 10597.6 0.0001
Dec 4 2018 https://logbooks.jlab.org/entry/3634940 159.6633 3.83345 +/- 0.0026 3821.20 0.0032
Dec 14 2018 https://logbooks.jlab.org/entry/3638789 205.523 4.94090 +/- 0.0028 4917.88 0.0047
March 13 2019 https://logbooks.jlab.org/entry/3667208 417.182 10.21404 +/- 0.00404 0.00265 10205.4 0.0008
March 22 2019 https://logbooks.jlab.org/entry/3671165 258.207 6.19009 +/- 0.00302 0.00 6169.28 0.0034
March 28 2019 https://logbooks.jlab.org/entry/3673353 342.822 8.20883 +/- 0.00349 0.00095 8184.96 0.0029
**June 20 2019 https://logbooks.jlab.org/entry/3691774 115.821 2.783625 +/- 0.00243 0.00 2772.02 0.0041
July 10 2019 https://logbooks.jlab.org/entry/3701511 152.424 3.66017 +/- 0.00256 0.00 3649.06 0.0030
July 29 2019 https://logbooks.jlab.org/entry/3711839 189.992 4.55974 +/- 0.00268 0.00 4546.49 0.0029
Dec 19 2019 https://logbooks.jlab.org/entry/3756354 90.6584 2.18151 +/- 0.00237 0.000 2174.23 0.0033
Feb 20 2020 https://logbooks.jlab.org/entry/3788373 434.739 10.39269 +/- 0.00409 0.00244 10386.2 0.00062
Aug 19 2020 https://logbooks.jlab.org/entry/3830781 434.655 10.39069 +/- 0.00409 0.00244 10385.2 0.00053
Sept 18 2020 https://logbooks.jlab.org/entry/3851231 90.7084 2.182708 +/- 0.00236 0.00 2176.17 0.0030
Sept 20 2021 https://logbooks.jlab.org/entry/3909335 383.336 9.172705 +/- 0.00374 0.0014 9161.64 0.0012
Nov 7 2021 https://logbooks.jlab.org/entry/3938406 5.984792 +/- 0.00299 0.0 5965.1 0.0033
Nov 16 2021 https://logbooks.jlab.org/entry/3944894 9.878901 +/- 0.00395 0.0020 9866.5 0.0013
Dec 2 2021 https://logbooks.jlab.org/entry/3955017 7.937662 +/- 0.00342 0.0 7914.42 0.0029
Jan 9 2022 https://logbooks.jlab.org/entry/3968977 331.424 7.937448 +/- 0.00342 0.0
Jun 12 2022 https://logbooks.jlab.org/entry/4001821 441.374 10.549355 +/- 0.0041371 0.0026 10539.2 0.00096
Aug 12 2022 https://logbooks.jlab.org/entry/4027952 354.143 8.478619 +/- 0.003554 0.0 8457.9 0.0025
Aug 23 2022 https://logbooks.jlab.org/entry/4033282 266.767 6.394701 +/- 0.003055 0.0 6371.62 0.0036
Sep 19 2023 https://logbooks.jlab.org/entry/4182724 441.164 10.544427 +/- 0.0041357 0.0026 10537.8 0.00063
Nov 30 2023 https://logbooks.jlab.org/entry/4229120 354.075 8.47699 +/- 0.0035536 0.0 8457.88 0.0022
Mar 12 2024 https://logbooks.jlab.org/entry/4265782 266.851 6.39670 +/- 0.003056 0.0 6369.28 0.0043
Retrieved from "https://hallcweb-2024.jlab.org/wiki/index.php?title=Table_of_12_GeV_Beam_Energy_Measurements&oldid=24019"