Speaker
Description
The proposed ICAL detector by the INO Collaboration is a 51 kTon magnetized Iron Calorimeter which is designed to detect muons of energy in the range of 1-25 GeV, which are generated by the interaction of atmospheric $\nu_{\mu}$ and $\bar{\nu}_{\mu}$ with the iron. ICAL is designed to provide a maximum magnetic field of $\sim$ 1.5 Tesla with 90$\%$ of its volume having more than 1 Tesla field. Since ICAL is a magnetized detector, it provides excellent charge identification of tracked particles and also helps with reconstruction of muon momentum.
The mini-ICAL is an 85-ton prototype detector, which is functioning at Madurai, Tamil Nadu. It consists of 11 layers of iron - 4m $\times$ 4m in dimension and each layer made up of 7 plates of 56 mm thick iron. 10 layers of Resistive Plate Chambers (RPCs) are sandwiched between the iron layers, as active detector elements. The mini-ICAL consists of two sets of copper coils each having 18 turns which are used to magnetize mini-ICAL, by passing about 900A current through them. One of its main goals is to study the challenges involved to produce the required uniform magnetic field and measure it in-situ, as accurately as possible. The measurements are also used to validate the magnetic field simulations carried out using MAGNET 7.7 software.
To measure the magnetic field, 150 Hall sensors and 5 search coils are used for each of the layer 1, 6 and 11. Search coils will provide magnetic field value during ramp up and ramp down of the current through the coils. Hall sensors will provide magnetic field value in the steady state. The static 3-D simulation is carried out for different values of current by optimizing various parameters such as mesh size etc. In this paper, characterization and calibration studies of Hall sensors as well as comparison between the Hall sensors and search coil will be summarized. Comparison of measured and simulated magnetic fields will also be presented.
| Session | Future Experiments and Detector Development |
|---|
