Calibration of Analog Calibration of Analog Sensors for the - - PowerPoint PPT Presentation

Calibration of Analog Calibration of Analog Sensors for the Alignment Sensors for the Alignment

• f
• f Muon

Muon Chambers in the Chambers in the CMS experiment CMS experiment

Marion Ripert, Dr Caraway, Dr Hohlmann Department of Physics and Space Sciences Florida Institute of technology

C Compact

• mpact M

Muon

uon

S Solenoid

• lenoid

R R -

• Sensor

Sensor

Wire extension potentiometer Wire extension potentiometer

Z Sensor Z Sensor

Linear motion potentiometer

Example : Disk ME2 Example : Disk ME2

Calibration Bench Calibration Bench

Absolute Distance R sensor Ref dowel pin Moving Table Stepper Motor Mounting plate R Post Z sensor Tower Lab Bench

Calibration Bench Calibration Bench

The Analog system The Analog system

Data Acquisition Unit AGILENT HP 34970A Analog Interface R sensor X- Inclinometer Y- Inclinometer Z sensor

Lab View Lab View -

• Virtual Instrument

Virtual Instrument Interface Interface

Virtual Instruments Virtual Instruments

• Move the stepper motor using :

direction of the stepper motor

• Take simple measurements with DAQ :

Cross calibration Cross calibration

Cross Calibration Cross Calibration

Response of R sensor Response of R sensor vs vs distance over 10 cm distance over 10 cm

• f wire extension
• f wire extension

Summary and Future project

• During each calibration, the input voltage

applied on the Analog interface will be recorded with the sensor response.

• For mid August, florida Tech has to

calibrated all sensors for ME2 and shipped to CERN.