# Difference between revisions of "Infl9"

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###### =====

Line 8: | Line 8: | ||

== Secondary Beam == | == Secondary Beam == | ||

*'''<sup>31</sup>Si<sup>14+</sup>''' | *'''<sup>31</sup>Si<sup>14+</sup>''' | ||

− | *Energy: ~10 MeV/u | + | *Energy: ~10.6 MeV/u |

*Requested rate and purity: 5x10<sup>4</sup> pps, >10 % | *Requested rate and purity: 5x10<sup>4</sup> pps, >10 % | ||

*Achieved rate (pps/pnA): | *Achieved rate (pps/pnA): | ||

− | **[June 19] ( | + | **[June 19] Target (5m pps/pnA) [20 pnA <sup>30</sup>Si<sup>14+</sup>] |

+ | **[June 19] Cross (13k pps / pnA) | ||

+ | **[June 19] Exit (>25k pps / pnA) | ||

*Purity: | *Purity: | ||

− | **[June 19] | + | **[June 19] 50% best (.001% - 50% range) |

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

## Revision as of 18:41, June 28, 2019

## General Info

- Exp to HELIOS
- [June 19]
^{31}Si- Location in in-flight ELOG
- @ SHORTSTOP

## Secondary Beam

^{31}Si^{14+}- Energy: ~10.6 MeV/u
- Requested rate and purity: 5x10
^{4}pps, >10 % - Achieved rate (pps/pnA):
- [June 19] Target (5m pps/pnA) [20 pnA
^{30}Si^{14+}] - [June 19] Cross (13k pps / pnA)
- [June 19] Exit (>25k pps / pnA)

- [June 19] Target (5m pps/pnA) [20 pnA
- Purity:
- [June 19] 50% best (.001% - 50% range)

## Tuning Info

Primary Beam (energy) [max pnA]

^{30}Si^{14+}[11.5 MeV/u, 345 MeV][120 / 50 pnA]- Will have 7+ from the source and 14+ after stripping to remove 40Ar contamination at original 9+ charge state

- Target: D2 Gas w/ 1.9 mg/cm
^{2}HAVAR windows (3.7 cm, 1400 mbarr, T=90K) [^{31}Si^{14+}]

###### =====^{31}Si===========

^{31}Si - D_{2} gas target

Beam | Label | Energy [MeV] | Brho [Tm] | calc / TOF | Scale Factor | DE-E (50 / 1000 um) | DE-E (150 / 1000) | Target |
---|---|---|---|---|---|---|---|---|

^{30}Si^{14+} |
primary | 345 | XXX | tof | 71 / 273 MeV | 273 / 71 MeV | none | |

^{30}Si^{14+} |
degraded | 298 | XXX | tof | 79 / 222 MeV | 301.2 / ~0 MeV | D2 Gas | |

^{31}Si^{14+} |
secondary | XXX | XXX | calc | 1.6% | 81 / 219 MeV | 301.3 / ~0 MeV | D2 Gas |

^{30}Si^{13+} |
contam | XXX | XXX | calc | 87 / 181 MeV | 267.7 / 0 MeV | D2 Gas |

- Scale Factor:
- [June 19]
^{31}Si^{14+}[301.3 MeV] from^{31}Si^{14+}[301.2 MeV]**scale factor = 0.9944/0.9791 = 1.0156**

- [June 19]

- Expected calculated rates for tuning (
**acceptable - ideal**):- At EXIT Detector:
**>5000-10000 pps/pnA**(midplane slits set to ~+-4 mm, ~3% momentum acceptance). - At HELIOS Cross Detector:
**>1000-2000 pps/pnA**(assumes ~20% transmission, maybe on the high side...)

- At EXIT Detector: