PP/JAI Web>LaserWire>Atf2Laserwire>Atf2LwLogBook>Atf2LwLogBook20130926ChargeNormalisationComparison (26 Sep 2013, LaurieNevay)

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Laser Normalisation for Fitting

Compare the effect of background subtraction and laser energy normalisation for fitting. Neither the accuracy or precision of the laser energy measurement is sufficient to improve the normalised signal (hypothesis).

Charge normalised

Fitted values are:

Reduced Chi2: 4.14615
sigma_ex: 124.874 +2.12956 -2.11568
sigma_ey: 1.43039 +0.0543083 -0.054307
dx0: 206.36 +3.6964 -3.70271
dy0: 760.95 +0.0366295 -0.0364225
offset: 0.747667 +0.0110486 -0.0110642
amplitude: 10.3483 +0.11383 -0.11319

Reduced Chi2: 4.14615

sigma_ex: 124.874 +2.12956 -2.11568

sigma_ey: 1.43039 +0.0543083 -0.054307

dx0: 206.36 +3.6964 -3.70271

dy0: 760.95 +0.0366295 -0.0364225

offset: 0.747667 +0.0110486 -0.0110642

amplitude: 10.3483 +0.11383 -0.11319

Charge normalised background subtracted

Fitted values are:

Reduced Chi2: 4.14615
sigma_ex: 124.872 +2.13111 -2.11412
sigma_ey: 1.43038 +0.0543183 -0.0542969
dx0: 206.348 +3.70816 -3.69089
dy0: 760.95 +0.0365984 -0.0364532
offset: 0.104667 +0.0110485 -0.0110643
amplitude: 10.3483 +0.113837 -0.113182

Reduced Chi2: 4.14615

sigma_ex: 124.872 +2.13111 -2.11412

sigma_ey: 1.43038 +0.0543183 -0.0542969

dx0: 206.348 +3.70816 -3.69089

dy0: 760.95 +0.0365984 -0.0364532

offset: 0.104667 +0.0110485 -0.0110643

amplitude: 10.3483 +0.113837 -0.113182

Charge normalised background subtracted len

Fitted values are:

Reduced Chi2: 4.72921
sigma_ex: 124.17 +2.14108 -2.12945
sigma_ey: 1.44897 +0.0532012 -0.0531334
dx0: 205.404 +3.7663 -3.75842
dy0: 760.967 +0.0360184 -0.0359157
offset: 1.29471 +0.14225 -0.142511
amplitude: 133.062 +1.45495 -1.44628

Reduced Chi2: 4.72921

sigma_ex: 124.17 +2.14108 -2.12945

sigma_ey: 1.44897 +0.0532012 -0.0531334

dx0: 205.404 +3.7663 -3.75842

dy0: 760.967 +0.0360184 -0.0359157

offset: 1.29471 +0.14225 -0.142511

amplitude: 133.062 +1.45495 -1.44628

Charge normalised background subtracted lpn

Fitted values are:

Reduced Chi2: 6.36996
sigma_ex: 110.207 +2.14836 -2.13408
sigma_ey: 1.51045 +0.0640568 -0.0637409
dx0: 202.432 +3.95782 -3.93806
dy0: 760.82 +0.0406612 -0.0406095
offset: 1.53377 +0.145307 -0.14555
amplitude: 134.91 +1.96614 -1.94926

Reduced Chi2: 6.36996

sigma_ex: 110.207 +2.14836 -2.13408

sigma_ey: 1.51045 +0.0640568 -0.0637409

dx0: 202.432 +3.95782 -3.93806

dy0: 760.82 +0.0406612 -0.0406095

offset: 1.53377 +0.145307 -0.14555

amplitude: 134.91 +1.96614 -1.94926

-- LaurieNevay - 26 Sep 2013

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Topic revision: r1 - 26 Sep 2013 - LaurieNevay

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