Hello again,
I revised the computation because I think, Genya's "pitch" and "roll"
should correspond to, "theta (polar angle)" and "phi (azimuthal angle)",
respectively. Also, I should not mix these errors and put 1.8 deg.
uncertainty, which overestimates the error.
Now, with the 0.9 degree pitch and 1.6 degree roll errors of the probe
(see [BLASTTALK] Holding field map by Genya, Thu Jan 27, 2005 - 16:44:08
EST), in addition to the positional and the relative errors, which were
provided by Karen and assumed to be the same for Genya's measurement, I
obtain ~0.5 and ~0.7 degrees errors for 48 and 32 degree holding fields,
respectively.
The attachments are the detailed results. Sorry for the additional loads
for your mailboxes.
Thank you,
aki
Akihisa Shinozaki wrote:
> Hello there,
>
> As discussed at the meeting, I would like to reintroduce the error
> estimate of the holding field map. The attachment is the errors of the
> Genya's holding angles, which are estimated from the angular
> uncertainly of 0.9 deg. (azimuth) and 1.6 deg. (polar) with the
> position resolution of 1 mm and the 0.1 % component errors. The
> resulting errors are quite big (~1.5 deg.).
>
> If one could measure the field when the angular uncertainty is 1
> deg. then the holding angle uncertainly would result ~0.7 deg. Right
> now I am calculating them with the 1.8 deg. (=sqrt(0.6**2+1.6**2))
> hole probe
> angular uncertainty.
>
> By the way, in order to estimate these uncertainties, one needs to
> know the
> approximate idea of the 3d holding field in the first place. For my
> case, the 3d map is already constructed from Karen's measurements and
> the map is accurate within 6 Gauss now.
>
> I hope this is clear enough to you,
> Aki
>
>------------------------------------------------------------------------
>
>L500T500_gt_Jan2005.dat
>number of lines = 53
>z(cm) th(deg) d_th (deg)
>-22.0 59.0234 1.8286
>-21.0 49.1927 1.5679
>-20.0 43.5166 1.4702
>-19.0 39.0312 1.4394
>-18.0 36.0677 1.4383
>-17.0 33.9008 1.4466
>-16.0 32.4745 1.4550
>-15.0 31.2989 1.4643
>-14.0 30.5377 1.4702
>-13.0 30.0229 1.4737
>-12.0 29.7449 1.4743
>-11.0 29.5774 1.4740
>-10.0 29.5371 1.4719
> -9.0 29.6514 1.4676
> -8.0 29.9090 1.4612
> -7.0 30.3060 1.4527
> -6.0 30.7787 1.4432
> -5.0 31.3650 1.4321
> -4.0 31.9615 1.4213
> -3.0 32.7785 1.4072
> -2.0 33.5159 1.3951
> -1.0 33.9639 1.3878
> 0.0 34.0933 1.3856
> 1.0 33.9334 1.3880
> 2.0 33.3659 1.3969
> 3.0 32.7211 1.4075
> 4.0 31.8092 1.4230
> 5.0 30.9533 1.4383
> 6.0 30.1847 1.4528
> 7.0 29.3843 1.4683
> 8.0 28.8209 1.4801
> 9.0 28.4261 1.4892
> 10.0 28.1027 1.4976
> 11.0 27.9496 1.5032
> 12.0 27.8695 1.5082
> 13.0 27.8833 1.5123
> 14.0 28.0759 1.5139
> 15.0 28.3778 1.5153
> 16.0 29.1230 1.5114
> 17.0 30.0853 1.5070
> 18.0 31.3033 1.5037
> 19.0 33.3904 1.4984
> 20.0 36.5871 1.5021
> 21.0 40.7334 1.5384
> 22.0 47.3984 1.6613
> 23.0 57.7412 1.9713
> 24.0 75.1877 2.5132
> 25.0 102.2739 2.6628
> 26.0 123.5967 2.1361
> 27.0 139.7025 1.7451
> 28.0 148.8421 1.6690
> 29.0 155.0363 1.6872
> 30.0 159.1108 1.7185
>
>
>------------------------------------------------------------------------
>
>Opening L250T500_gt_Jan2005.dat
>number of lines = 27
>z(cm) th(deg) d_th (deg)
>-22.0 73.3130 1.8712
>-20.0 60.9776 1.5641
>-18.0 53.8469 1.4059
>-16.0 50.0729 1.3449
>-14.0 47.6989 1.3196
>-12.0 46.4790 1.3098
>-10.0 45.8645 1.3053
> -8.0 45.8995 1.3032
> -6.0 46.2966 1.3023
> -4.0 46.9873 1.3031
> -2.0 47.7569 1.3053
> 0.0 48.1810 1.3070
> 2.0 47.5524 1.3046
> 4.0 46.3644 1.3018
> 6.0 45.2728 1.3018
> 8.0 44.5351 1.3041
> 10.0 44.3004 1.3072
> 12.0 44.5458 1.3115
> 14.0 45.3862 1.3186
> 16.0 47.1337 1.3349
> 18.0 50.3444 1.3778
> 20.0 56.4721 1.4997
> 22.0 67.3441 1.7808
> 24.0 86.0872 2.1369
> 26.0 111.8773 1.9417
> 28.0 131.7927 1.5238
> 30.0 144.3721 1.4728
>
>
Processing show_gt.C...
Opening L500T500_gt_Jan2005.dat
number of lines = 53
Info in <TCanvas::Print>: eps file show_gt.eps has been created
-22.0 59.0234 1.2483
-21.0 49.1927 1.0073
-20.0 43.5166 0.8855
-19.0 39.0312 0.8189
-18.0 36.0677 0.7856
-17.0 33.9008 0.7671
-16.0 32.4745 0.7561
-15.0 31.2989 0.7494
-14.0 30.5377 0.7436
-13.0 30.0229 0.7385
-12.0 29.7449 0.7331
-11.0 29.5774 0.7282
-10.0 29.5371 0.7231
-9.0 29.6514 0.7173
-8.0 29.9090 0.7106
-7.0 30.3060 0.7031
-6.0 30.7787 0.6951
-5.0 31.3650 0.6863
-4.0 31.9615 0.6778
-3.0 32.7785 0.6672
-2.0 33.5159 0.6578
-1.0 33.9639 0.6521
0.0 34.0933 0.6503
1.0 33.9334 0.6522
2.0 33.3659 0.6590
3.0 32.7211 0.6672
4.0 31.8092 0.6788
5.0 30.9533 0.6902
6.0 30.1847 0.7011
7.0 29.3843 0.7126
8.0 28.8209 0.7222
9.0 28.4261 0.7305
10.0 28.1027 0.7388
11.0 27.9496 0.7460
12.0 27.8695 0.7538
13.0 27.8833 0.7621
14.0 28.0759 0.7701
15.0 28.3778 0.7801
16.0 29.1230 0.7902
17.0 30.0853 0.8035
18.0 31.3033 0.8227
19.0 33.3904 0.8512
20.0 36.5871 0.9015
21.0 40.7334 0.9893
22.0 47.3984 1.1597
23.0 57.7412 1.4677
24.0 75.1877 1.9260
25.0 102.2739 2.0932
26.0 123.5967 1.7015
27.0 139.7025 1.2878
28.0 148.8421 1.0944
29.0 155.0363 1.0103
30.0 159.1108 0.9758
Processing show_gt.C...
Opening L250T500_gt_Jan2005.dat
number of lines = 27
Info in <TCanvas::Print>: eps file show_gt.eps has been created
-22.0 73.3130 0.9938
-20.0 60.9776 0.7555
-18.0 53.8469 0.6369
-16.0 50.0729 0.5904
-14.0 47.6989 0.5728
-12.0 46.4790 0.5651
-10.0 45.8645 0.5606
-8.0 45.8995 0.5554
-6.0 46.2966 0.5496
-4.0 46.9873 0.5435
-2.0 47.7569 0.5382
0.0 48.1810 0.5358
2.0 47.5524 0.5394
4.0 46.3644 0.5475
6.0 45.2728 0.5569
8.0 44.5351 0.5659
10.0 44.3004 0.5735
12.0 44.5458 0.5811
14.0 45.3862 0.5910
16.0 47.1337 0.6090
18.0 50.3444 0.6502
20.0 56.4721 0.7526
22.0 67.3441 0.9764
24.0 86.0872 1.2725
26.0 111.8773 1.2326
28.0 131.7927 0.9492
30.0 144.3721 0.8427
This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:32 EST