- Table of contents
- Meeting 2015 08 28
Meeting 2015 08 28¶
Generic settings¶
MSE is the Mean Squared Error
MSE = 1/n * sum_{i=1}^{n} (G4_i - AN_i)^2
Experiment 1 - Vary epsilon in G4¶
(see August 21 meeting)
/N02/det/stepMax 20. mm (i.e., stepMax = 20mm)
epsilonMax = epsilonMin = epsilon
The mean square error doesn't seem to vary.
The error, however, keeps growing with distance.
| epsilon | Simulation Time | Integration Steps | Mean Square Error | sqrt(MSE) |
|---|---|---|---|---|
| 1.0e-3 | 0m13.725s | 16500010 | 294 | 17.14 |
| 1.0e-4 | 0m13.725s | 16500010 | 294 | 17.14 |
| 1.0e-5 | 0m13.725s | 16500010 | 294 | 17.14 |
| 1.0e-6 | 0m21.815s | 38500010 | 294 | 17.14 |
| 1.0e-7 | 0m27.980s | 60500010 | 294 | 17.14 |
| 1.0e-8 | 0m41.054s | 104499999 | 294 | 17.14 |
| 1.0e-9 | 0m55.830s | 159500010 | 294 | 17.14 |
| 1.0e-10 | 1m25.948s | 269499999 | 294 | 17.14 |
| 1.0e-11 | 2m17.996s | 456500010 | 294 | 17.14 |
| 1.0e-12 | 3m50.224s | 786518324 | 294 | 17.14 |
A few plots for different values of epsilon:
The 3 plots look exactly the same!
The output for those epsilon values is different, though.
Experiment 3 - Vary DeltaQ in PD¶
Simulated with QSS3 method
DeltaQmin = DeltaQ * 1e-3
Several values of the table were left blank deliberately as they weren't calculated yet
| DeltaQ | Simulation Time | Integration Steps | Mean Square Error [mm^2] | sqrt(MSE)[mm] |
|---|---|---|---|---|
| 1.0e-1 | 0.41s | 5.60e5 | ||
| 1.0e-2 | 0.42s | 6.40e5 | ||
| 1.0e-3 | 1.33s | 2.40e6 | 704.43 | 26.54 |
| 1.0e-4 | 8.89s | 1.42e7 | 568.32 | 23.83 |
| 1.0e-5 | 16.3s | 3.08e7 | 86.89 | 9.32 |
| 1.0e-6 | 35.6s | 6.64e7 | 56.79 | 7.54 |
| 1.0e-7 | 77.6s | 1.43e8 | 57.45 | 7.58 |
| 1.0e-8 | 165s | 3.09e8 | ||
| 1.0e-9 | 354s | 6.64e8 | ||
| 1.0e-10 | 740s | 1.43e9 | ||
| 1.0e-11 | 1630s | 3.09e9 | ||
| 1.0e-12 |
A few plots for different values of DeltaQ:
The last two plots look exactly the same