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- Timestamp:
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Jun 18, 2017, 7:22:12 PM (7 years ago)
- Author:
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Patrick Stowell
- Comment:
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--
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v16
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v17
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403 | 403 | Fixed parameters can be specified by using any of the 'parameter' type structures. You must specify the type of parameter first, before listing the name, starting value, and state. These structures are read by '''nuiscomp''', '''nuismin''', and '''nuissyst''' |
404 | 404 | {{{ |
405 | | TYPE_parameter NAME VALUE STATE |
| 405 | TYPE_parameter NAME VALUE |
406 | 406 | }}} |
407 | 407 | |
… |
… |
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413 | 413 | - **VALUE** : Starting value for the dial. In general for RW engine parameters this is given in terms of 1-sigma variations away from the nominal, so that VALUE=0.0 is the nominal generator value. For everything else, like normalisation parameters, this value is in units of the true value. |
414 | 414 | |
415 | | - **STATE** : State of the dial. This should always be left as FIX as this is the only support option for the time being. |
416 | | |
417 | | |
418 | 415 | Multiple parameter structures can be listed in the nuisance card file to make comparisons with many model parameters changed at once. |
419 | 416 | |
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427 | 424 | **Example 1** : Fixed GENIE RW 'MaCCQE' to +1 sigma |
428 | 425 | {{{ |
429 | | genie_parameter MaCCQE +1.0 FIX |
| 426 | genie_parameter MaCCQE +1.0 |
430 | 427 | }}} |
431 | 428 | |
432 | 429 | **Example 2** : Fixed NuWro RW 'kNuwro_Ma_CCQE' to -1 sigma |
433 | 430 | {{{ |
434 | | nuwro_parameter kNuwro_Ma_CCQE -1.0 FIX |
| 431 | nuwro_parameter kNuwro_Ma_CCQE -1.0 |
435 | 432 | }}} |
436 | 433 | |
437 | 434 | **Example 3** : Shift both 'MaCCQE' and 'MaCCRES' in NEUT by 1 sigma |
438 | 435 | {{{ |
439 | | neut_parameter MaCCQE -1.0 FIX |
440 | | neut_parameter MaCCRES +1.0 FIX |
| 436 | neut_parameter MaCCQE -1.0 |
| 437 | neut_parameter MaCCRES +1.0 |
441 | 438 | }}} |
442 | 439 | |
443 | 440 | **Example 4** : Change MiniBooNE sample normalisation (alternative to using sample NORMVALUE option) |
444 | 441 | {{{ |
445 | | norm_parameter MiniBooNE_CCQE_XSec_1DQ2_nu_norm 0.9 FIX |
| 442 | norm_parameter MiniBooNE_CCQE_XSec_1DQ2_nu_norm 0.9 |
446 | 443 | sample MiniBooNE_CCQE_XSec_1DQ2_nu NEUT:/path/to/neutinput.root |
447 | 444 | }}} |