Top Banner
OD Calorimetry Study Jaewon Park University of Rochester NERvA/Jupiter Group Meeting, Mar 8, 2006
13

OD Calorimetry Study

Jan 18, 2016

Download

Documents

ovidio

OD Calorimetry Study. Jaewon Park University of Rochester. MINER v A/Jupiter Group Meeting, Mar 8, 2006. Bethe-Bloch formula (Energy loss of charged particles). dE/dx is assumed constant in the calculation. In actual case, it’ll be one source of nonlinearity - PowerPoint PPT Presentation
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: OD Calorimetry Study

OD Calorimetry Study

Jaewon Park

University of Rochester

MINERvA/Jupiter Group Meeting, Mar 8, 2006

Page 2: OD Calorimetry Study

Bethe-Bloch formula (Energy loss of charged particles)

22

2

2

420

)1(

2ln

4

I

mv

A

Z

mv

ezN

dx

dE

dE/dx is assumed constant in the calculation.

In actual case, it’ll be one source of nonlinearity

Different particle has different dE/dx. In particle shower it’ll combination of them.

Page 3: OD Calorimetry Study

Total Energy Loss Calculation

scintscintmin

scintscintminiron

ironminscint

losstotalloss )(

)()(

L

LLEE

dxdE

dxdE

dxdE

scintLironL

particle

scintlossheight) (pluse E

iron scint

Page 4: OD Calorimetry Study

Energy loss in each layer

particle

ID ECAL HCAL

Pb Fe

ldxActiveCa

ldxActiveCaaldxPassiveC)n()n( scint

losstotalloss

EE

n: layer number (n=0,...,4)

Page 5: OD Calorimetry Study

Energy resolution

E (true)

E (measured)

true

truemeasured

E

EE

E

E

EE

E 1

Page 6: OD Calorimetry Study

E_measured vs. E_true

Page 7: OD Calorimetry Study

E_measured vs. E_true (1 OD layer)

Page 8: OD Calorimetry Study

Energy resolution

Measured energy should collect all the energy? (y-intercept should be zero?)

E (measured)

E (true)

Page 9: OD Calorimetry Study

Energy resolution

E (true) E (measured)

EE /

EE

E 1

EE /

Page 10: OD Calorimetry Study

Resolution as # layer decrease, not calibrated( CC, QE, old geom, 5.2PE/MeV)

Page 11: OD Calorimetry Study

Resolution decrease due to leakage ( CC, QE, old geom, 5.2PE/MeV)

Page 12: OD Calorimetry Study

Resolution as # layer decrease, not calibrated ( CC, QE, new geom, 5.2PE/MeV)

Page 13: OD Calorimetry Study

Resolution decrease due to leakage ( CC, QE, new geom, 5.2PE/MeV)