| At line 2 added 1 line. |
| + |
| Line 9 was replaced by lines 10-13 |
| - {{> REF ''qh qk ql a4 a3 sgl sgu ki kf''}} |
| + |
| + {{> addauxref ''qh qk ql''}} |
| + |
| + Define the vectors for the scattering plane. |
| At line 10 added 3 lines. |
| + |
| + {{> REF ''qh qk ql a3 a4 sgl sgu Ei Ef''}} |
| + |
| Lines 12-14 were replaced by line 19 |
| - the current motor positions are used. If the given |
| - qhkl triple already exists, its list entry is overwritten. |
| - If not, a new entry is made. |
| + the current motor positions are used. |
| At line 16 added 19 lines. |
| + {{> REF AUX ''qh qk ql''}} |
| + Add an auxiliary reflection to the list of reflections. A4 is calculated from the cell |
| + constants, the current ei and ef values are used. A3 is left alone or is calculated to |
| + have the right angular difference to the previous reflection. Using auxiliary reflections |
| + is a help during setup of the instrument or in powder mode. |
| + |
| + The sequence: |
| + {{{ |
| + ref clear all |
| + cell aa bb cc alpha beta gamma |
| + addauxref ax ay az |
| + addauxref bx by bz |
| + makeub 1 2 |
| + }}} |
| + with ax, ay, az being the first plane vector and bx, by, bz being the second plane vector |
| + creates a UB matrix which allows to drive Q positions and qm. But be aware that a3, sgu and sgl values |
| + are still invalid. |
| + |
| + |
| At line 41 added 11 lines. |
| + {{>MAKEUBFROMCELL}} |
| + |
| + Calculate and activate a UB which has been calculated from the cell constants alone. |
| + This is useful to get a4 when no reflection has yet been found to calculate a proper UB. |
| + |
| + {{>MAKEAUXUB qh qk ql}} |
| + |
| + Calculate a UB matrix from the first reflection and an auxiliary second reflection specified through the miller |
| + indices qh , qk, ql. The auxiliary reflection will have the same angles as the first reflection, except a3 and a4 will |
| + be adjusted to match the requirements from the crystalls geometry. |
| + |
| At line 49 added 17 lines. |
| + !Out Of Plane Operation |
| + |
| + This formalism allows to drive out of the scattering plane using the tilt motors of the sample stage. Some cryostats cannot stand this. |
| + Therefore driving out of plane can be switched off and on. |
| + |
| + {{> TASUB OUTOFPLANE 1}} |
| + |
| + This command switches out of plane operation __on__. |
| + |
| + {{> TASUB OUTOFPLANE 0}} |
| + |
| + This command switches out of plane operation __off__. |
| + |
| + {{> TASUB OUTOFPLANE}} |
| + |
| + lists the current value of the outofplane variable |
| + |
| Line 58 was replaced by line 110 |
| - Find the peak 2 0 0 and optimize it |
| + > MAKEUBFROMCELL |
| Line 60 was replaced by lines 112-116 |
| - ... |
| + MAKEUBFROMCELL builds a UB matrix from the cell only. With this you can drive to 2 0 0 |
| + |
| + > drive qh 2 0 0 |
| + |
| + This will get you the correct two-theta == a4. You have to search the peak in a3, sgu and sgl and optimize it. |
| At line 67 added 4 lines. |
| + > makeauxub 0 4 4 |
| + > dr qh 0 4 4 |
| + Make an axiliary UB and drive to the theoretical position for 0 4 4 |
| + |
LIN