Things that can be attended to pretty much straight away

• Confirm by measurements the relationships between Q, Zin, and steady-state voltage gain given in pn2511 section 9.
• Confirm by measurements the predictions of Zft given by pn2511, equations 8.2 and 8.5.
• Attempt to cross check Cdc from pn2511 equ 7.2 against measurement, especially for coils at high elevation.
• Confirm by measurement the trend towards uniform intervals between the odd-numbered resonances f5 onwards.
• Reproduce Medhurst figure 9 and explain the minimum.
• Measure accurately the higher mode frequencies on large coils of h/d less than 1.5, using coils with very thin formers.
• Model the response of a coil to sudden discharge of the topload, and compare with actual response.
• Devise techniques to reliably measure the peak top voltage.

Stuff that'll take a bit longer

• Extend the range of systems for which software modeling is validated.
• Solve the frequency prediction error which occurs for coils at high elevation and/or small radius.
• Improve estimation of Rac for use in the model.
• Replace pn1205 with a technical appendix pn1904.
• Compare the E-field collecting performance of foil sheets, meshes and radials. Find out the minimum b/d ratio for coils operated over continuous conducting sheets.
• Improve the accuracy of determination of higher mode amplitudes in the time domain modeling of Tesla coils at high coupling factor.
• Sort out the various causes of racing arcs.
• Establish whether toroid circulating currents are effective in damping the higher modes.
• Examine toroid surface field strength at breakout threshold.
• Attempt to set up a model of leader formation.

Some longer term goals

• Find modeled support for John Freau's views on increasing efficiency, and find out what the upper limit constraints are for secondary inductance.
• Find an estimator of corona loading.
• Define an 'optimum' secondary in terms of performance and determine design criteria to obtain it.