Difference between revisions of "HYP Target Meeting 20231030"
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* E12-15-008: <sup>40</sup>Ca, <sup>48</sup>Ca (150 mg/cm<sup>2</sup>) | * 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. | ** 40 is easy to obtain, but not for 48. | ||
| − | ** Dave asked Oak Ridge National Lab. to purchase the Ca material. <br> → | + | ** Dave asked Oak Ridge National Lab. to purchase the Ca material. <br> → No response yet. <br> → Dave will contact the Lab. |
* E12-20-013: <sup>208</sup>Pb (100-150 mg/cm<sup>2</sup>) | * E12-20-013: <sup>208</sup>Pb (100-150 mg/cm<sup>2</sup>) | ||
** The thickness needs to be fixed for design. | ** The thickness needs to be fixed for design. | ||
** Cryogenic system is likely to be needed for cooling. | ** Cryogenic system is likely to be needed for cooling. | ||
| − | ** 20 μA would be OK to apply. | + | ** ∼20 μA would be OK to apply. |
* Common calibration: <sup>12</sup>C (150 mg/cm<sup>2</sup>), CH<sub>2</sub> (500 mg/cm<sup>2</sup>), <sup>27</sup>Al (150 mg/cm<sup>2</sup>) | * Common calibration: <sup>12</sup>C (150 mg/cm<sup>2</sup>), CH<sub>2</sub> (500 mg/cm<sup>2</sup>), <sup>27</sup>Al (150 mg/cm<sup>2</sup>) | ||
===Proposing next year === | ===Proposing next year === | ||
* LOI12-23-013: <sup>6</sup>Li, <sup>9</sup>Be, <sup>11</sup>B (100 mg/cm<sup>2</sup>) | * LOI12-23-013: <sup>6</sup>Li, <sup>9</sup>Be, <sup>11</sup>B (100 mg/cm<sup>2</sup>) | ||
** A 90%-level of purity is easy to obtain for <sup>6</sup>Li. <br> → The Li material with a better purity is possible to prepare but it costs more. | ** A 90%-level of purity is easy to obtain for <sup>6</sup>Li. <br> → The Li material with a better purity is possible to prepare but it costs more. | ||
| − | ** B<sub>4</sub>C would be OK, but the pure B is much better in terms of spectroscopy. | + | ** B<sub>4</sub>C is easier to obtain than a pure B. <br> B<sub>4</sub>C would be OK, but the pure B is much better in terms of spectroscopy. |
* LOI12-23-016: <sup>27</sup>Al (100 mg/cm<sup>2</sup>) | * LOI12-23-016: <sup>27</sup>Al (100 mg/cm<sup>2</sup>) | ||
| − | * LOI12-23-011: there may | + | * LOI12-23-011: there may be special needs. |
| + | |||
==Some comments== | ==Some comments== | ||
| − | * Solid targets are planned to be used for the next run. <br> But, the target system | + | * Solid targets are planned to be used for the next run. <br> But, the target system should be compatible with gas targets ([https://researchmap.jp/gogami/published_papers/42604225/attachment_file.pdf E12-19-002]) to save total manpower and cost. |
* ERR, for example, in Mar is possible for the (solid) target part. | * ERR, for example, in Mar is possible for the (solid) target part. | ||
* Requirements for the target (position accuracy etc.) need to be summarized. | * Requirements for the target (position accuracy etc.) need to be summarized. | ||
| + | * Target camera <br> → Beam position adjustment by using a carbon-hole target is more standard nowadays. | ||
| + | * The target group will work on a scattering chamber as well. | ||
* Let's keep using MS Sharepoint for sharing information and documents. | * Let's keep using MS Sharepoint for sharing information and documents. | ||
=Next Meeting= | =Next Meeting= | ||
| − | 13:00 p.m.- on Nov 14, 2022 (EDT) at JLab.<br> https://indico.jlab.org/event/742/ | + | 13:00 p.m.- on Nov 14, 2022 (EDT) at JLab.<br>→ [https://indico.jlab.org/event/742/ Meeting for Hypernuclear ERR] |
<br><br> | <br><br> | ||
<hr> | <hr> | ||
[[HYP_HRS-HKS|Back to home]] | [[HYP_HRS-HKS|Back to home]] | ||
Latest revision as of 17:00, 31 October 2023
Target Meeting (Hypernuclear experiment at JLab)
- 23:00-24:00 on Oct 29th, 2023 EDT (12:00-13:00 on Oct 30th, 2023 JST)
- Participants: David Meekins (JLab), Toshiyuki Gogami (Kyoto Univ.)
- via ZoomGov
Discussion
HKS-target_meeting_gogami_20231030.pdf
Target list (only solid targets for the next run)
Approved
- 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)
Proposing next year
- 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 is easier to obtain than a pure B.
B4C would be OK, but the pure B is much better in terms of spectroscopy.
- A 90%-level of purity is easy to obtain for 6Li.
- LOI12-23-016: 27Al (100 mg/cm2)
- LOI12-23-011: there may be special needs.
Some comments
- Solid targets are planned to be used for the next run.
But, the target system should be compatible with gas targets (E12-19-002) to save total manpower and cost. - ERR, for example, in Mar is possible for the (solid) target part.
- Requirements for the target (position accuracy etc.) need to be summarized.
- Target camera
→ Beam position adjustment by using a carbon-hole target is more standard nowadays. - The target group will work on a scattering chamber as well.
- Let's keep using MS Sharepoint for sharing information and documents.
Next Meeting
13:00 p.m.- on Nov 14, 2022 (EDT) at JLab.
→ Meeting for Hypernuclear ERR