This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
group_secar2.0 [2018/09/11 15:42] plastun |
group_secar2.0 [2018/09/11 16:11] wagner |
||
---|---|---|---|
Line 1: | Line 1: | ||
Group SECAR2.0 | Group SECAR2.0 | ||
- | **DAY1 | + | -by Alex, Nadeesha and Louis- |
- | **\\ | + | |
- | Reaction: < | + | **DAY1**\\ |
+ | **Getting started**\\ | ||
+ | Example reaction: < | ||
+ | ⇒important for < | ||
Beam: < | Beam: < | ||
{{ : | {{ : | ||
Line 35: | Line 38: | ||
{{ : | {{ : | ||
- | Q7 strenght variation: | + | **Q7 strenght variation:**\\ |
- | |B [T] |Xmax[m] |ap [m] |Brho [Tm] |L [m] |K| | + | |B [T] |Xmax[m] |ap [m] |Brho* [Tm] |L [m] |K| |
|0.02 |2.91E-03 |0.13 |0.8 |0.34 |0.065384615| | |0.02 |2.91E-03 |0.13 |0.8 |0.34 |0.065384615| | ||
|0.01 |2.27E-03 |0.13 |0.8 |0.34 |0.032692308| | |0.01 |2.27E-03 |0.13 |0.8 |0.34 |0.032692308| | ||
Line 46: | Line 49: | ||
|-0.05 |1.60E-03 |0.13 |0.8 |0.34 |-0.163461538| | |-0.05 |1.60E-03 |0.13 |0.8 |0.34 |-0.163461538| | ||
|-0.06 |2.26E-03 |0.13 |0.8 |0.34 |-0.196153846|\\ | |-0.06 |2.26E-03 |0.13 |0.8 |0.34 |-0.196153846|\\ | ||
+ | |||
+ | *Brho the magnetic rigidity was extracted from COSY by comand CONS(CHIM)\\ | ||
**Fit of the data to parabola** | **Fit of the data to parabola** | ||
Line 53: | Line 58: | ||
b = 0.0834414129893 \\ | b = 0.0834414129893 \\ | ||
c = 3.506973286e-07\\ | c = 3.506973286e-07\\ | ||
- | Double check for beam size calculation in Q7: X_calculated = 3.13, X_cosy_read_out = 3.16 at the Q7 exit.\\ | + | Double check for beam size calculation in Q7: X_calculated = 3.13mm, X_cosy_read_out = 3.16mm at the Q7 exit.\\ |
- | Emittance = 3.045387898578198e-07 | + | Emittance = 3.045387898578198e-07 |
- | start beam emittance= XX * AX= 0.2 π mm mrad so the emittance grows from the start to the focal point\\ | + | Start beam emittance= XX * AX= 0.2 π mm mrad, so the emittance grows from the start to the focal point.\\ |
- | Emittance grows due to the optics aberrations. Input COSY file shows 4th-order-calculation. Also measured points don't fit the parabola ideally, i.e. optics is non-linear.\\ | + | This rmittance grow is possibly |