# Difference between revisions of "Infl6"

Jump to navigation
Jump to search

Line 10: | Line 10: | ||

*Energy: 86.8 MeV, 0.9316 Tm | *Energy: 86.8 MeV, 0.9316 Tm | ||

*Requested rate and purity: 1x10<sup>6</sup> pps, >50 % | *Requested rate and purity: 1x10<sup>6</sup> pps, >50 % | ||

− | *Achieved | + | *Achieved rates [Apr/May 19]: |

− | **[ | + | ** 17k / pnA [HP/Exit w/ 5mm slits], 4.8k / pnA SSX, 1.8k / pnA SST |

+ | ** w/ 150 - 200 pnA on Gas cell -> ~2-4e5 pps assumed (x1000 attenuator suggested ~5e4 pps) | ||

*Purity: | *Purity: | ||

− | **[Apr 19] | + | **[Apr 19] ~90% best |

==Tuning Info== | ==Tuning Info== | ||

Line 40: | Line 41: | ||

== Primary Beam (energy) [max pnA] + Target (thickness) == | == Primary Beam (energy) [max pnA] + Target (thickness) == | ||

− | * [Date 19] <sup>11</sup>B<sup>4+(?)</sup> (95 MeV from TOF)[150 pnA] + D2 Gas w/ 1.9 mg/cm<sup>2</sup> HAVAR windows (3.7 cm, 1400 mbarr, T=90K) | + | * [Date 19] <sup>11</sup>B<sup>4+(?)</sup> (95 MeV from TOF)[150->200 pnA] + D2 Gas w/ 1.9 mg/cm<sup>2</sup> HAVAR windows (3.7 cm, 1400 mbarr, T=90K) |

== Degraded Beam (energy) + Target == | == Degraded Beam (energy) + Target == | ||

* [Date 19] <sup>11</sup>B<sup>5+</sup> [~89 MeV from TOF] + D2 Gas w/ 1.9 mg/cm<sup>2</sup> HAVAR windows (3.7 cm, 1400 mbarr, T=90K) | * [Date 19] <sup>11</sup>B<sup>5+</sup> [~89 MeV from TOF] + D2 Gas w/ 1.9 mg/cm<sup>2</sup> HAVAR windows (3.7 cm, 1400 mbarr, T=90K) |

## Latest revision as of 18:43, May 29, 2019

## General Info

- Wuosmaa (UConn)
- [Apr 19]
^{12}B(t,p)^{14}B- Location in in-flight ELOG
- @ HELIOS (shortstop or thirdbase?)

## Secondary Beam

^{12}B^{5+}- Energy: 86.8 MeV, 0.9316 Tm
- Requested rate and purity: 1x10
^{6}pps, >50 % - Achieved rates [Apr/May 19]:
- 17k / pnA [HP/Exit w/ 5mm slits], 4.8k / pnA SSX, 1.8k / pnA SST
- w/ 150 - 200 pnA on Gas cell -> ~2-4e5 pps assumed (x1000 attenuator suggested ~5e4 pps)

- Purity:
- [Apr 19] ~90% best

## Tuning Info

Target: D2 Gas w/ 1.9 mg/cm^{2} 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) |
---|---|---|---|---|---|---|---|

^{11}B^{4+} |
primary | 95 | 1.1666 | TOF | 11.8 / 83 MeV | 40.5 / 54.5 MeV | |

^{11}B^{5+} |
degraded | 89 | 0.90318 | TOF | 12.5 / 76 MeV | 44 / 45 MeV | |

^{12}B^{5+} |
secondary | 86.8 | 0.9316 | calc | 3.14% | 13.7 / 73 MeV | 49 / 37 MeV |

^{11}B^{4+} |
contaminant | 60.7 | 0.9316 | calc | 17.5 / 43 MeV | 60.7 / 0 MeV |

- Scale Factor:
- [Date 19]
^{12}B^{5+}[86.8 MeV] from^{11}B^{5+}[89 MeV]**scale factor = 0.9316/0.90318 = 0.0314**

- [Date 19]

- 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...)

- At EXIT Detector:

## Primary Beam (energy) [max pnA] + Target (thickness)

- [Date 19]
^{11}B^{4+(?)}(95 MeV from TOF)[150->200 pnA] + D2 Gas w/ 1.9 mg/cm^{2}HAVAR windows (3.7 cm, 1400 mbarr, T=90K)

## Degraded Beam (energy) + Target

- [Date 19]
^{11}B^{5+}[~89 MeV from TOF] + D2 Gas w/ 1.9 mg/cm^{2}HAVAR windows (3.7 cm, 1400 mbarr, T=90K)