Infl10

General Info

• Devel for SPS
• [July 19]
• ²²Mg ^XXX+
• Location in in-flight ELOG
• @ HOMEPLATE / FIRSTBASE

22Mg beam with an energy of about 51 MeV and deliver it to the Split-Pole Spectrograph beam line with a minimum intensity of 1×103 22Mg/s and purity of 20% or more.

Secondary Beam

• ²²Mg^XXX+
• Energy: XXX MeV/u
• Requested rate and purity: Xx10^X pps, >XX %
• Achieved rate (pps/pnA):
  • [July 19]
    • XXX
• Purity:
  • [June 19]
    • XXX

Tuning Info

Primary Beam (energy) [max pnA]:

• ²⁰Ne^XXX+ [5 MeV/u, 100 MeV][10 pnA]

Target:

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

=====²²Mg===========

Beam	Label	Energy [MeV]	Brho [Tm]	calc / TOF	Scale Factor	DE-E (50 / 1000 um)	DE-E (150 / 1000)	Target
30Si14+	primary	345	XXX	tof		71 / 273 MeV	273 / 71 MeV	none
30Si14+	degraded	298	XXX	tof		79 / 222 MeV	301.2 / ~0 MeV	D2 Gas
31Si14+	secondary	XXX	XXX	calc	1.6%	81 / 219 MeV	301.3 / ~0 MeV	D2 Gas
30Si13+	contam	XXX	XXX	calc		87 / 181 MeV	267.7 / 0 MeV	D2 Gas

• Scale Factor:
  • [June 19] ³¹Si¹⁴⁺ [301.3 MeV] from ³¹Si¹⁴⁺ [301.2 MeV] scale factor = 0.9944/0.9791 = 1.0156

• 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...)