Beam startup/recovery Procedure: This procedure is required for every long period of absence of beam or major accelerator problem

• Beam energy lock: ON Hall A.
• Fast feedback lock: ON
• Target: start from BeO.
• Beam entrance and exit window cover OUT (if they were IN during a hall access).
• Beam tune straight or through Compton magnets, the same as before the down.
• Verify settings of target Ion chamber trip limit (MCC with Radcon).
• Center beam on the BeO target's cross mark.
• Record BPM A and B readings in (x, y), compare with nominal position on the white board. 
• If beam position is off, ask MCC to steer it more. Tolerance is +/-0.3mm on both x and y.
• Ask for harp scan, require that beam $\sigma_x$: 100 - 300microns, $\sigma_y$:100 - 300microns on two hall A harps (these harps are called IHA1H03A and IHA1H03B, or H03A and H03B for short).
• Establish the beam position on the target, use the holey target:
• If there was major accelerator work or pass/energy change change, perform raster scan and bull's eye scan.
• If changes in accelerator optics are not expected, then take a run on holey target with raster on, use nominal raster size (default is 6x6 MCC unit). Run spot++ and confirm the hole is at the center. Also make sure there is no hot spot on the raster pattern.
• Note: to get a good picture of the hole, use T1 trigger only.
• For production, move to LD2 target
• Do a rate check with different raster size. Use 2microA beam:
• use 2 x 2 MCC unit raster, do spot++, record trigger rates;
• use 4 x 4 MCC unit raster, do spot++, record trigger rates;
• use 6 x 6 MCC unit raster, do spot++, record trigger rates.
• If the trigger rates increase dramatically when the raster size increases, it indicate the beam hits the target wall. Stop the beam immediately and consult the RC.
• If the trigger rates stay the same for different raster sizes, the beam is safe for production.
• Check signals from lumi-monitors, beam position monitors, beam charge monitors.
• Lumi readings can be clearly lined up with real triggers in time? Fast clock serves as a time mark.
• Happex beam charge feedback check.
• Make sure the VDC high voltage is OFF.
• If in production mode, run both spectrometer CODA and PVDIS/HAPPEX CODA:
• For spectrometer CODA, monitor the deadtime. Use proper prescale factors to limit the deadtime.
• For both CODA, run online analysis and check data with sample histograms.