Revision as of 17:26, 31 October 2023

Target Meeting (Hypernuclear experiment at JLab)

Discussion

E12-15-008: ⁴⁰Ca, ⁴⁸Ca (150 mg/cm²)
- 40 is easy to obtain, but not for 48.
- Dave asked Oak Ridge National Lab. to purchase the Ca material.
  → No response yet.
  → Dave will contact the Lab.
E12-20-013: ²⁰⁸Pb (100-150 mg/cm²)
- The thickness needs to be fixed for design.
- Cryogenic system is likely to be needed for cooling.
- 20 μA would be OK to apply.
Common calibration: ¹²C (150 mg/cm²), CH₂ (500 mg/cm²), ²⁷Al (150 mg/cm²)

LOI12-23-013: ⁶Li, ⁹Be, ¹¹B (100 mg/cm²)
- A 90%-level of purity is easy to obtain for ⁶Li.
  → The Li material with a better purity is possible to prepare but it costs more.
- B₄C would be OK, but the pure B is much better in terms of spectroscopy.
LOI12-23-016: ²⁷Al (100 mg/cm²)
LOI12-23-011: there may need special needs.

Solid targets are planned to be used for the next run.
But, the target system would be better to be compatible with gas targets (E12-19-002).
ERR, for example, in Mar is possible for the (solid) target part.
Requirements for the target (position accuracy etc.) need to be summarized.
Let's keep using MS Sharepoint for sharing information and documents.

13:00 p.m.- on Nov 14, 2022 (EDT) at JLab.
https://indico.jlab.org/event/742/

@@ Line 11: / Line 11: @@
 * E12-15-008: <sup>40</sup>Ca, <sup>48</sup>Ca (150 mg/cm<sup>2</sup>)
 ** 40 is easy to obtain, but not for 48.
-** Dave asked Oak Ridge National Lab. to purchase the Ca material. <br> &rarr; no response yet. <br> &rarr; Dave will contact the Lab.
+** Dave asked Oak Ridge National Lab. to purchase the Ca material. <br> &rarr; No response yet. <br> &rarr; Dave will contact the Lab.
 * E12-20-013: <sup>208</sup>Pb (100-150 mg/cm<sup>2</sup>)
 ** The thickness needs to be fixed for design.