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group_secar2.0 [2018/09/13 14:33] plastun |
group_secar2.0 [2018/09/13 15:10] plastun |
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-- by Alex, Nadeesha and Louis -- | -- by Alex, Nadeesha and Louis -- | ||
+ | |||
===== DAY1===== | ===== DAY1===== | ||
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{{ : | {{ : | ||
- | Reaction summary for < | + | Reaction summary for < |
The maximum γ energy is 8.481 MeV. The minimum γ energy is 7.249 MeV.\\ | The maximum γ energy is 8.481 MeV. The minimum γ energy is 7.249 MeV.\\ | ||
The maximum < | The maximum < | ||
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{{ : | {{ : | ||
+ | ---- | ||
===== DAY2 ===== | ===== DAY2 ===== | ||
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This emittance grow is possibly due to the optics aberrations. That is because the input COSY file does a 4th-order-calculation. Also the measured points don't fit the parabola ideally, i.e. the optics is non-linear.\\ | This emittance grow is possibly due to the optics aberrations. That is because the input COSY file does a 4th-order-calculation. Also the measured points don't fit the parabola ideally, i.e. the optics is non-linear.\\ | ||
+ | ---- | ||
===== DAY3===== | ===== DAY3===== | ||
==== Impact of Lenght Change of Quadrupole 2 ==== | ==== Impact of Lenght Change of Quadrupole 2 ==== | ||
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{{ : | {{ : | ||
+ | ---- | ||
===== DAY4===== | ===== DAY4===== | ||
==== Optics misalignments ==== | ==== Optics misalignments ==== | ||
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SRDE:= 0.0;'' | SRDE:= 0.0;'' | ||
- | Created loop for target position. Observed piece-wise curve for resolution vs target offset (see figure below) in case of 4th order calculation. If order reduced to the 1st, than curve is smooth, but maximum resolution is shifted. | + | Created loop for target position. Observed piece-wise curve for resolution vs target offset |
- | {{ : | + | {{ : |
+ | The resolution drops by 5% at the offsets (-5 mm, +7 mm).\\ | ||
**Beam position. Transverse offset.** | **Beam position. Transverse offset.** | ||
+ | {{ : | ||
+ | The resolution drops by 5% at the beam offsets (-0.8 mm, +0.5 mm). The offset is of the beam half-size order. \\ | ||
+ | |||
+ | ==== Recoil tracking in SECAR ==== | ||
+ | |||
+ | **< | ||
+ | |||
+ | Beam is set to 132MeV < | ||
+ | '' | ||
+ | '' | ||
+ | XX: | ||
+ | AX: | ||
+ | YY: | ||
+ | AY: | ||
+ | DE: | ||
+ | |||
+ | {| Recoil beam fits the SECAR very well. |} | ||
+ | {{ : | ||
+ | |||
+ | ---- | ||
+ |