X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=research%2FTCS%2F2012-09-10%2Freadme;h=50095d80a00c3e94768a12e9cc037636822811e4;hb=26c125054f99b0616b710ff89eee4dced688a5d0;hp=cfc44f65d6df3f16786354031429fa131ecf425f;hpb=88432baa0ee699e35b3f3ddfe4e680044c0d22ec;p=matches%2Fhonours.git

diff --git a/research/TCS/2012-09-10/readme b/research/TCS/2012-09-10/readme
index cfc44f65..50095d80 100644
--- a/research/TCS/2012-09-10/readme
+++ b/research/TCS/2012-09-10/readme
@@ -27,6 +27,10 @@ And comparison between first curve at optimum potentials on 2012-09-07 and last
 Noted significant difference, not just in maximum value, but in shape of curve...
 Compare TCS as well.
 
+Talked to Sergey
+ - Parameters aren't necessarily optimum (I know this), best way to optimise is with a cyclical adjustment (I did one cycle only)
+ - Not much I can do to optimise further, due to time dependence of curves, and long time (a day) taken to do a single cycle
+
 Plan:
 
 - Take control measurements of current sample
@@ -60,5 +64,31 @@ Vv = 23.2V
 Still looks wrong, as good as I am going to get.
 I hate this experiment.
 
+Record pressure whilst evaporating.
+Pressure recording stopped several times, so my fix doesn't work properly. Will solve that problem later, it is minor.
+
+Make new sweeps. Maxed out ADC; had to adjust scale of 602 from 1e-6 x 0.1 to 1e-6 x 0.3. Increase in current related to sample, or different pressure of chamber (previously noted increase in current during evaporation, as pressure increased)?
+
+Note spread of TCS peak is much wider. Try to optimise by adjusting electrodes to maximise I when V = 2V.
+Current is lower, but spread of peak narrower.
+
+Evaporate black Au at 1.8e-1 to 2.1e-8 mbar. Aimed for 30 mins. But filament blew after 15min.
+Forgot to rotate sample holder before evaporating!!! FUCKING. GENIUS.
+Evaporated over empty sample holder instead of Shiny Au on Si. Dammit.
+
+1 filament left with Au on it, but haven't formed ball yet.
+Need to decrease pressure to e-6, form ball, repeat whole thing again. ARGH.
+
+Form ball at 4.5A 4e-6mbar.
+
+Now increase chamber pressure again. Evaporate 1.8e-1 to 3.0e-8mbar. The Au ball fell off the filament after ~5min. GARGH.
+
+Replace all three filaments, since no gold balls left.
+
+Recording pressure whilst chamber pumping down. Unfortunately, camera was mis-aligned, so many bad values. "1639.pressure.dat" has good values.
+Start preparing balls at 1.4e-5 mbar. Lost first ball at 4A. Lost second ball at 4A. Fuck them all. Third ball? Lost it at 3.5A. ARGH.
+
+Try again.
+Preparing balls at 1.0e-5 mbar. First ball formed at 4.1A, 8.78e-6mbar. Second ball formed at 3.5A 5.4e-6 mbar. Lost third ball 3.5A 4.7e-6 mbar. Going home 7:45pm.