Physics program

Set-up's:

ASU: Most recent reviews of the devices are in

• Rémi Cornat's presentation at ALCW '2015 https://agenda.linearcollider.org/event/6557/session/0/contribution/164
• presentation at IEEE:

• ensemble_plateau_test_Calque_1.pdf
• ensemble_plateau_test_Calque_2.pdf
• ensemble_plateau_test_ind_A.pdf
• Some explanations from the mail exchange with Andreas Psallidas: scheme.pdf

SENSORS: one silicon sensor has a size of 89.960 +/- 0.040 mm, and it is a matrix of 16x16 pixels with a pitch of 5.530 mm. Ie. at the periphery one has (89.960 - 16*5.530)/2 = 0.74 mm wide guard ring. The design is a know-how of Hamamatsu, the guard ring should partially be efficient.

In principle, if necessary, the "effective" active area of peripheral pixels may be estimated from occupancy distributions: it should be a smooth continuation from inner sensor regions (eg. with effectively wider peripheral pixels, they should get more hits and produce some little amount of discontinuity).

In addition, on the PCB there is a 0.1 mm gap between the sensors in the center.

Physics commissioning:

• Check proper running with high intensity μ’s (X-check of cosmics)
• Thr. adjustment vs noise environment
  • Threshold adjusted around 230.
  • List of scans
  • List of runs...
  • List of configuration files* run
  • with muons (low rates)
  • pions (high rates)
    • scan in position

EM-Core Set-up:

All slabs after 4.2 X0 (7*2.1mm) of W (ensures Strong correlation between SLAB’s).

• Response at the core of a EM shower:
  • Explore the full dynamic range (1–2500 mips: LINK to SiWECALSimulationStudy from Kostia) using shower profile (for all mem depth).
    • e– runs of all energies, beam rates → linearity
    • energies: 15, 30, 50, 100, 150 e+ and e-
  • Check the responses at the wafers edges with ≠ types of wafers (square events)
    • Scan in positions
    • shot in in ASICs for 100 GeV e- ?
    • rates ?

HAD-Core set-up:

same as EM-core or with 1λ of W / SS

• Response to HE hadrons: look for SEU

Mini-ECAL set-up:

Sampling with 3-4 × 2.5X0 and 2-3× 5X0

• Study of theoretical resolution & simulation tuning.
  • Scan in energy, position (and angle).

-- VincentBoudry - 2015-10-28