# Trying to optimise lens setup


# Va = 200 V

# If = 1.22 A
# Vd = 0.00 V
# Vv = 17.38 V

# Start at 13:11

# Vf = -50.7
# Vi	Ie	Is	Vf
0.00	6.4	0.0000	-50.7
1.01	6.4	0.0003	-50.7
2.00	6.4	0.0007	-50.7
3.00	6.4	0.0020	-50.7
3.52	6.4	0.0022	-50.7
4.02	6.5	0.0030	-50.7
4.54	6.4	0.0038	-50.7
5.01	6.5	0.0040	-50.7
6.00	6.5	0.0047	-50.7
7.00	6.5	0.0057	-50.7
7.98	6.5	0.0060	-50.7
9.04	6.5	0.0062	-50.7
10.05	6.6	0.0075	-50.7
11.02	6.6	0.0080	-50.7
12.00	6.6	0.0087	-50.7
13.03	6.6	0.0098	-50.7
14.01	6.6	0.0104	-50.7
15.04	6.7	0.0122	-50.7
16.00	6.7	0.0128	-50.7
17.20	6.7	0.0130	-50.7
	
# Vf = -40.0
# Vi	Ie	Is	Vf
0.00	6.2	0.0000	-40.0
1.00	6.3	0.0002	-40.0
2.00	6.3	0.0004	-40.0
2.50	6.3	0.0018	-40.0
3.00	6.3	0.0033	-40.0
3.51	6.4	0.0041	-40.0
4.02	6.3	0.0050	-40.0
4.50	6.4	0.0060	-40.0
5.01	6.4	0.0063	-40.0
6.01	6.4	0.0082	-40.0
7.01	6.4	0.0100	-40.0
8.00	6.4	0.0112	-40.0
9.02	6.5	0.0120	-40.0
10.02	6.5	0.0128	-40.0
11.05	6.5	0.0140	-40.0
11.99	6.5	0.0150	-40.0
13.00	6.6	0.0164	-40.0
14.00	6.6	0.0182	-40.0
15.00	6.6	0.0202	-40.0
16.00	6.6	0.0222	-40.0
17.20	6.7	0.0230	-40.0
	
# Vf = -30.0
# Vi	Ie	Is	Vf
0.00	6.2	0.0000	-30.0
1.01	6.2	0.0002	-30.0
2.02	6.2	0.0010	-30.0
2.50	6.2	0.0023	-30.0
3.00	6.2	0.0042	-30.0
3.49	6.3	0.0062	-30.0
4.01	6.3	0.0080	-30.0
4.49	6.3	0.0092	-30.0
5.01	6.3	0.0105	-30.0
6.00	6.3	0.0132	-30.0
7.03	6.3	0.0158	-30.0
8.03	6.3	0.0178	-30.0
9.01	6.4	0.0190	-30.0
10.03	6.4	0.0202	-30.0
11.00	6.4	0.0221	-30.0
11.99	6.4	0.0242	-30.0
13.02	6.5	0.0270	-30.0
14.00	6.5	0.0298	-30.0
15.03	6.5	0.0330	-30.0
16.00	6.5	0.0358	-30.0
17.20	6.5	0.0375	-30.0

# Vf = -20.0
# Vi	Ie	Is	Vf
0.00	6.1	0.0000	-20.0
1.02	6.1	0.0001	-20.0
2.00	6.2	0.0010	-20.0
2.50	6.2	0.0035	-20.0
3.03	6.2	0.0062	-20.0
3.50	6.2	0.0088	-20.0
4.00	6.2	0.0118	-20.0
4.50	6.2	0.0138	-20.0
5.00	6.2	0.0153	-20.0
6.00	6.2	0.0198	-20.0
7.00	6.3	0.0238	-20.0
8.01	6.3	0.0262	-20.0
9.01	6.3	0.0290	-20.0
10.00	6.4	0.0318	-20.0
11.00	6.3	0.0340	-20.0
12.04	6.4	0.0368	-20.0
13.00	6.4	0.0400	-20.0
14.00	6.4	0.0440	-20.0
15.08	6.4	0.0492	-20.0
16.00	6.4	0.0537	-20.0
17.20	6.5	0.0562	-20.0

# Vf = -10.0
# Vi	Ie	Is	Vf
0.00	6.1	0.0000	-10.0
1.02	6.1	0.0000	-10.0
2.00	6.1	0.0000	-10.0
2.50	6.2	0.0002	-10.0
3.00	6.1	0.0003	-10.0
3.50	6.2	0.0008	-10.0
4.02	6.2	0.0012	-10.0
4.50	6.2	0.0028	-10.0
5.02	6.2	0.0050	-10.0
6.04	6.2	0.0074	-10.0
7.00	6.2	0.0091	-10.0
8.00	6.2	0.0118	-10.0
9.02	6.3	0.0138	-10.0
10.06	6.3	0.0160	-10.0
11.01	6.3	0.0183	-10.0
11.99	6.3	0.0200	-10.0
13.01	6.4	0.0210	-10.0
14.02	6.4	0.0221	-10.0
15.05	6.4	0.0236	-10.0
16.04	6.4	0.0242	-10.0
17.21	6.4	0.0258	-10.0
	
# Vf = 0.0
# Vi	Ie	Is	Vf
0.00	6.0	0.0000	0.0
1.01	6.0	0.0001	0.0
2.00	6.1	0.0001	0.0
2.50	6.1	0.0001	0.0	
3.00	6.1	0.0001	0.0
3.99	6.1	0.0001	0.0
4.58	6.1	0.0008	0.0
5.03	6.1	0.0018	0.0
6.01	6.1	0.0038	0.0
7.01	6.2	0.0050	0.0
8.00	6.2	0.0062	0.0
9.04	6.2	0.0080	0.0
10.01	6.2	0.0098	0.0
11.02	6.2	0.0122	0.0
12.02	6.3	0.0143	0.0
13.01	6.3	0.0160	0.0
14.01	6.3	0.0162	0.0
15.01	6.3	0.0170	0.0
16.00	6.3	0.0178	0.0
17.21	6.4	0.0182	0.0

# Stop 14:05

# Conclusions:
# From plot, it seems that Vf = -20.0 = 0.1 Va is optimal
# Will adjust slightly.

# The dependence of Ie (emission current) on Vi suggests there is current flowing through electrodes.
# Suspect the Venault (Vv), as it is significantly high and close to the electrode.
# Possibly also Va
# Hopefully, it is the ratio of Vf/Va that matters, so I do not need to repeat all this if I change Va and/or Vv (!)