1. Gabriel Palacios gabrielp@jlab.org 09/04/18
Tests for Joe
Gabriel Palacios
09/04/18

2. Models: T-cathode
I produced field maps in CST for the T-shape cathode for 3 cases:
Cathode at -100 kV anode at 0 kV
Cathode at 0 kV anode at -0 kV
Cathode at -100 kV anode at -10 kV
Then I ran three different simulations on GPT to check superposition of E-fields:
Simulation with the 100_0 field map
Simulation with the 100_0 field map and 0_100 field map (called one after the other in the *.in file)
Simulation with the 100_10 field map

3. Cathode-anode gap: Not mushroom but T-shape, though!
The data for the following plots was taken along the cathode anode gap as a function of the height (on the photocathode surface) varying from -6mm to 6mm.
Not mushroom but T-shape, though!

4. Transverse vertical field maps

5. GPT results: Transverse electric field – T-shape

6. GPT results: Transverse electric field – T-shape

7. GPT results: Transverse electric field – T-shape

8. GPT results: Transverse electric field – T-shape

9. GPT results: Transverse electric field – T-shape

10. GPT results: Transverse electric field – T-shape

11. GPT stuff

12. NEMI_Y_RMS
BUT, BUT, BUT!? SUPERPOSITION PRINCIPLE!

13. Then?
How to recover Ey after GPT solves? To check if:

14. False color abs-E

15. 100-0

16. 0-10

17. 100-10

18. Fin.

19. CST frame of reference:y x z
X goes into the page.