Ultra Thin Chamber (UTC)

• buffer layers with N
• active region material 2 (total = 3) []
• Z from helical cathode strips. cm []
• 1.4% []
  • m

Less multiple scattering, much better z tracking

red Kinematic resolution

blue

• K kinematic resolution (1991 and 1995)
  • momentum (1.25%)
  • energy (3.2%)
  • range (3.4%)
  • z (1 mm)

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