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 of Muon Muon Chambers in the Chambers in the of CMS experiment CMS experiment Marion Ripert, Dr Caraway, Dr Hohlmann Department of Physics and Space Sciences Florida Institute of technology

C ompact M uon C ompact M uon S olenoid S olenoid

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

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 - - Virtual Instrument Virtual Instrument Lab View 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 vs vs distance over 10 cm distance over 10 cm Response of R sensor of wire extension of 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.