March 21, 2017 - Radio-isotope test

Beam requirements

1. What energy or energy range do you want (is this total, kinetic), and if a range what step size or resolution is practically useful?

We'd like to have kinetic energy at least 18 MeV, and under 18.5 MeV (18.5 preferable), with a resolution (sigma) of at least 20 keV.

media:170321_radioisotopeenergies.xlsx

2. How well do you need to know the mean energy of #1 (not energy spread), just mean energy? 20keV

3. Is energy spread an issue, and if yes - is this value similar to #2? Yes.

4. What is the beam spot size or aspect ratio you would like to have at the radiator, and if a limit is important or a range is desired, please say so? Under 3x3 mm sigma

5. How well do you need to know the beam size, aspect or profile, maybe this is an issue for your diagnostics? Accuracy of beam size and stability about 1 mm

6. How precisely do you need to set the beam position at the radiator, how will you do this? 1 mm, use the beam profile scanner just upstream

7. How much position jitter or instability is acceptable, this might be an important point? 3x3 mm

8. What is the beam intensity you will use at the energies in #1, is this cw or peak? 50 uA CW

9. Are there limits on how much beam or beam intensity can be used when setting up on the radiator, e.g. limit so not to contribute to your result? Pulsed beam if possible, at a reasonable intensity

10. What else? None