Difference between revisions of "2022 JLAB REVIEW"
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[[File:Tensor polarization.png|thumb|400px|'''Figure 1.''' NMR measurement of tensor enhancement maximized by using two locations of ss-RF | [[File:Tensor polarization.png|thumb|400px|'''Figure 1.''' NMR measurement of tensor enhancement maximized by using two locations of ss-RF | ||
| − | while rotating continuously at a fixed rate. The resulting tensor polarization was | + | while rotating continuously at a fixed rate. The resulting tensor polarization was |
| − | 36%]] | + | 36.5+-3.5%]] |
The b1 and Azz experiments were C1 conditional approved by PACs 41&44, respectively, with the requirement that : | The b1 and Azz experiments were C1 conditional approved by PACs 41&44, respectively, with the requirement that : | ||
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Recent developments in spin-1 enhanced tensor polarization have demonstrated that a tensor polarization of at least 30% will be achieved under experimental conditions, so we '''request Jefferson Lab to remove the conditional and fully approve these experiments'''. | Recent developments in spin-1 enhanced tensor polarization have demonstrated that a tensor polarization of at least 30% will be achieved under experimental conditions, so we '''request Jefferson Lab to remove the conditional and fully approve these experiments'''. | ||
| − | Figure 1 shows the NMR signal of | + | Figure 1 shows the NMR signal of 36+-3.5% tensor enhancement by using by using two locations of semi-saturating RF (ss-RF) while rotating the target cup continuously at a fixed rate. The points corresponds to the measured data and the red line is the fulled fitted lineshape of the NMR spectra. The full lineshape is composed of the 1 → 0 (Blue) and 0 → -1 (pink) lines. |
Revision as of 09:59, 20 May 2022
2022 C1 Status Review of Tensor Spin Observables Experiments
Contents
Request to remove the C1 conditional to the b1 and Azz experiments
The b1 and Azz experiments were C1 conditional approved by PACs 41&44, respectively, with the requirement that :
the experiment is conditionally approved with the condition that a tensor polarization of at least (close to) 30% be achieved and reliably demonstrated under experimental conditions."
Recent developments in spin-1 enhanced tensor polarization have demonstrated that a tensor polarization of at least 30% will be achieved under experimental conditions, so we request Jefferson Lab to remove the conditional and fully approve these experiments.
Figure 1 shows the NMR signal of 36+-3.5% tensor enhancement by using by using two locations of semi-saturating RF (ss-RF) while rotating the target cup continuously at a fixed rate. The points corresponds to the measured data and the red line is the fulled fitted lineshape of the NMR spectra. The full lineshape is composed of the 1 → 0 (Blue) and 0 → -1 (pink) lines.
The full details supporting our request to remove the C1 conditionals are available here.
Spin 1 Target Development
| Modeling alignment enhancement for solid polarized targets | https://arxiv.org/abs/1707.07065 |
| Enhanced tensor polarization in solid-state targets | https://arxiv.org/abs/2008.09515 |
PAC Results
| Experiment | Title | Scientific Rate | PAC Decision | PAC Results | Condition |
|---|---|---|---|---|---|
| b1 | The Deuteron Tensor Structure Function b1 | A- | C1 | https://www.jlab.org/exp_prog/PACpage/PAC40/PAC40_Final_Report.pdf | The experiment is conditionally approved with the condition that a tensor polarization of at least 30% be achieved and reliably demonstrated under experimental conditions. |
| Azz | Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries | A- | C1 | https://www.jlab.org/exp_prog/PACpage/PAC44/PAC44%20Report_FINAL.pdf | The experiment is conditionally approved with the condition that a tensor polarization of close to 30% be achieved and reliably demonstrated under experimental conditions. |
Full Proposals
| Experiment | Proposal |
|---|---|
| b1 | https://www.jlab.org/exp_prog/proposals/13/PR12-13-011.pdf |
| Azz | https://www.jlab.org/exp_prog/proposals/15/PR12-15-005.pdf |
