Infl18

General Info

• Devel for SPS
• [Dec 20]
• ²²Mg^11+,12+ ~ 70 MeV
• Location in in-flight ELOG
• @ HOMEPLATE & FIRSTBASE

22Mg beam with an energy of about 70 MeV and deliver it to the Split-Pole Spectrograph beam line with a minimum intensity of 1×10^{3 22}Mg/s and purity of 20% or more.

Secondary Beam

• ²²Mg¹²⁺
• Energy: ~70 MeV (from fusion evap of (³He,n)
• Requested rate and purity: 1x10³ pps, >20 %
• Achieved rate (pps/pnA):
  • [July 19] ~2-3 pps/pnA 12+, ~6-7 pps / pnA 11+
  • [Dec 20]
• Purity:
  • [July 19] poor, no sweeper.
  • [Dec 20]

Tuning Info

Primary Beam (energy) [max pnA]:

• ²⁰Ne^XXX+ 6.25 MeV/u, 125 MeV, 55 pnA

Target:

• ³He Gas w/ 1.9 mg/cm² HAVAR windows (3.7 cm, 1400 mbarr, T=90K)
• 0.1 mg/cm² C reset foil

=====²²Mg¹²⁺===========

Beam	Label	Energy [MeV]	Brho [Tm]	calc / TOF	Scale Factor	q-State Fraction (0.1 C foil)	DE-E (10 / 1000)	Target
20NeXXX+	primary	125	XXX	calc				none
20Ne10+	degraded	87 (98!)	0.60107	calc (tof!)		58, 41, 0	14/74	3He gas cooled->Really though??
22Mg12+	secondary	73	0.48116	calc	0.80	17, 50, 30, 3	22/48	3He gas cooled

• Scale Factor:
  • ²²Mg¹²⁺ [~73 MeV] from ²⁰Ne¹⁰⁺ [87 MeV] calculated scale factor = 0.80 -> will scan for correct value