Studies for a silicon detector in a e a collider benedetto di ruzza
Sponsored Links
This presentation is the property of its rightful owner.
1 / 26

Studies for a silicon detector in a e/A collider Benedetto Di Ruzza PowerPoint PPT Presentation


  • 86 Views
  • Uploaded on
  • Presentation posted in: General

Studies for a silicon detector in a e/A collider Benedetto Di Ruzza. BNL EIC T ask Force meeting August 28 th 2014. outline. Momentum resolution studies for a silicon detector in a eRHIC collider using the EICRoot framework.

Download Presentation

Studies for a silicon detector in a e/A collider Benedetto Di Ruzza

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Studies for a silicon detector in a e/A colliderBenedetto Di Ruzza

BNL EIC Task Force meeting

August 28th 2014


outline

  • Momentum resolution studies for a silicon detector in a eRHIC collider using the EICRoot framework.

  • Some consideration on bremsstrahlung for electron in silicon.

  • The ITS Alice upgrade.


Momentum resolution studies

Momentum resolution studies performed using a simple detector model in the EICRoot framework


Momentum resolution studies

Detector model: barrel

Electron energies: 5, 15 and 20 GeV

Eta : 0, 0.5, 1,1.5, 2, 2.5, 3

Forward and Rear:


Momentum resolution studies

In each configuration performed the simulation of 2000 events.


Momentum resolution studies

Crystal ball function “like” used in the fit fit:


Momentum resolution studies

Crystal ball function like function used in the fit:

P0= alpha, P1= n; P2= mean, P3= sigma, P4=N


Momentum resolution studies

Ratio tail/all events


Still to do:

  • Repeat the fit with a crystal ball function

  • change particles and detector design


electron bremsstrahlung in Si

Plot Energy loss in lead

Critical energy

From PDG 2013

Si Z=14


electron bremsstrahlung in Si


electron bremsstrahlung in Si

Some calculation with X0 =9.36 cm

Fraction of energy loss by electrons for bremsstrahlung

For 300 µm silicon: exp -(0.03/9.36)=0.0032

Other calculation: using the Bremsstrahlung energy spectrum


electron bremsstrahlung in Si

Some calculation with X0 =9.36 cm

(thanks to Sasha Bazilevsky for useful discussions)

Fraction of energy loss by electrons for bremsstrahlung:

Numerical calculation using bremsstrahlung gamma spectrum from PDG:

Energy (Gev)

Number of gamma

Ratio of Integral over all spectrum/incoming energy = 0.0032


The Alice ITS upgrade


The Alice ITS upgrade


The Alice ITS upgrade


The Alice ITS upgrade (inner barrels)


The Alice ITS upgrade (outer barrels)


New model implemented in the simulation by Alexander


New model implemented in the simulation by Alexander


New model implemented in the simulation by Alexander


The ITS upgrade cooling system


The ITS upgrade cooling system


Momentum resolution studies

ratio


Momentum resolution studies

ratio


Momentum resolution studies

ratio


  • Login