Table of 12 GeV Beam Energy Measurements

• 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 in the table are 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.

Date	Logbook entry	Current	Beam energy	Sync rad	Hallc:p	1-(Beam Energy)/Hallc:p
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		10205.4	0.0008
March 22 2019	https://logbooks.jlab.org/entry/3671165	258.207	6.19009 +/- 0.00302		6169.28	0.0034
March 28 2019	https://logbooks.jlab.org/entry/3673353	342.822	8.20883 +/- 0.00349		8184.96	0.0029
June 20 2019	https://logbooks.jlab.org/entry/3691774	115.82	2.783625 +/- 0.00243		2772.02	0.004