Absolute Beam Energy
Jump to navigation
Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
Summary of Beam Properties in JLab Injector
Beam Kinetic Energy, T (MeV) | 3.0 – 9.0 |
Beam Current (µA) | 0.01 – 100 |
Absolute Beam Energy | 0.36% |
Relative Beam Energy | 0.1% |
Energy Resolution (Spread), σT /T | 0.2% |
Beam Size, σx,y (mm) | 1 – 2 |
Goal: - Reduce the uncertainty on the absolute beam energy to <0.1% and achieve a relative beam energy of <0.02%.
Mott Results
- J. Grames, "Mott Experiment Run I/II Beam Energies" JLAB-TN-17-001 (Jan 17, 2017) media:JLAB-TN-17-001.docx media:JLAB-TN-17-001.pdf
Dipole Field
- MDL0L02 Dipole and Environmental Fields, August 16, 2016: media:MDL_Environmental_Fields.pdf media:MDL_Environmental_Fields.pptx
- MDL0L02 Dipole Hysteresis Loop Study, September 20, 2016: media:MDL_HysLoopMap.pdf media:MDL_HysLoopMap.pptx
- New Field Map: media:FinalNewMDL0L02_fm.txt
New Dipole Magnet
- Magnet Design: media:new_5MeV_dipole.pdf media:new_5MeV_dipole.doc
- Magnet Drawings (change txt to tar): media:05-06-14_ISSUED_DL_MAG_DRAWINGS.txt
- A detailed examination of the MDL field map and the TOSCA model of this "5 MeV" dipole
Jay Benesch (JLab Tech note 15-017, September 9, 2015): media:TN-15-017_MDL_FieldMap.pdf media:Graphs_MDL.pdf media:Graphs_MDL.docx
New Hall Probe
- GMW DTM-151-PS Digital Teslameter, 20 Bit Resolution, RS-232 Interface, Panel Mtg media:G3_MAN_DTM-151-S.pdf
- GMW MPT-231-8s Miniature Hall Probe with thermal sensor, High Sensitivity 0.03T, 0.06T, 0.12T, & 0.3T, 8m shielded cable. 0.01% accuracy, resolution to 2 ppm, and a temperature stability of 10 ppm/°C.
PEPPo Results
Momentum Measurement:
- Joe's summary of beam momentum: Media:130724_Bubble_Grames.pdf
- Joe's presentation at PEPPo Collaboration Meeting: Media:Collab_Momentum_Grames.pdf
- Joe's followup: Media:130718_FollowUp_Momentum_Grames.pdf
- Joe's followup: BPM quad centering Media:130726_MomentumFollowUp2_Grames.pdf
Cryounit Gradient:
- Upper limit of the electron beam energy at the CEBAF 2D injector spectrometer and its functionality
Jonathan Dumas, Joe Grames, and Eric Voutier Media:JLAB-TN-08-086.pdf