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* Expected calculated rates for tuning ('''acceptable - ideal'''): | * Expected calculated rates for tuning ('''acceptable - ideal'''): | ||
**At EXIT Detector: '''>12000-14000 pps/pnA''' (midplane slits set to ~+-4 mm, ~3% momentum acceptance). | **At EXIT Detector: '''>12000-14000 pps/pnA''' (midplane slits set to ~+-4 mm, ~3% momentum acceptance). | ||
**At HELIOS Cross Detector: '''>5000-6000 pps/pnA''' | **At HELIOS Cross Detector: '''>5000-6000 pps/pnA''' (assumes ~40% transmission, maybe on the high side...) | ||
**At HELIOS Target Detector: '''>4000-5000 pps/pnA''' | **At HELIOS Target Detector: '''>4000-5000 pps/pnA''' (assumes excellent [80%] transmission through the HELIOS array, maybe on the high side...) | ||
== Primary Beam (energy) [max pnA] + Target (thickness) == | == Primary Beam (energy) [max pnA] + Target (thickness) == | ||
Revision as of 21:36, April 24, 2019
General Info
- Wuosmaa (UConn)
- [Apr 19]
- 12B(t,p)14B
- Location in in-flight ELOG
- @ HELIOS (shortstop or thirdbase?)
Secondary Beam
- 12B5+
- Energy: 86.8 MeV, 0.9316 Tm
- Requested rate and purity: 1x106 pps, >50 %
- Achieved rate (pps/pnA):
- [Apr 19] (XXX pps/pnA) [XXX pnA XXXXXX]
- Purity:
- [Apr 19] XXX% best
Tuning Info
Target: D2 Gas w/ 1.9 mg/cm2 HAVAR windows (3.7 cm, 1400 mbarr, T=90K)
| Beam | Label | Energy [MeV] | Brho [Tm] | calc / TOF | Scale Factor | DE-E (50 / 1000 um) | DE-E (150 / 1000) |
|---|---|---|---|---|---|---|---|
| 11B4+ | primary | 95 | 1.1666 | TOF | 11.8 / 83 MeV | 40.5 / 54.5 MeV | |
| 11B5+ | degraded | 89 | 0.90318 | TOF | 12.5 / 76 MeV | 44 / 45 MeV | |
| 12B5+ | secondary | 86.8 | 0.9316 | calc | 3.14% | 13.7 / 73 MeV | 49 / 37 MeV |
| 11B4+ | contaminant | 60.7 | 0.9316 | calc | 17.5 / 43 MeV | 60.7 / 0 MeV |
- Scale Factor:
- [Date 19] 12B5+ [86.8 MeV] from 11B5+ [89 MeV] scale factor = 0.9316/0.90318 = 0.0314
- Expected calculated rates for tuning (acceptable - ideal):
- At EXIT Detector: >12000-14000 pps/pnA (midplane slits set to ~+-4 mm, ~3% momentum acceptance).
- At HELIOS Cross Detector: >5000-6000 pps/pnA (assumes ~40% transmission, maybe on the high side...)
- At HELIOS Target Detector: >4000-5000 pps/pnA (assumes excellent [80%] transmission through the HELIOS array, maybe on the high side...)
Primary Beam (energy) [max pnA] + Target (thickness)
- [Date 19] 11B4+(?) (95 MeV from TOF)[150 pnA] + D2 Gas w/ 1.9 mg/cm2 HAVAR windows (3.7 cm, 1400 mbarr, T=90K)
Degraded Beam (energy) + Target
- [Date 19] 11B5+ [~89 MeV from TOF] + D2 Gas w/ 1.9 mg/cm2 HAVAR windows (3.7 cm, 1400 mbarr, T=90K)