e. The vertical opening of the collimator shall be reduced to 3.0 mm on the detector side and 20 mm on the side closest to the fuel. 

f. The overall dimensions shall be reduced, maintaining a 20mm wall thickness around the electronic components. 

g. The method for securing the back-end boards within the collimator housing shall be simplified. 

f) Additional design updates(optional): 

After the collimator has been redesigned, it could be possible to reduce the size of the rotating platform and thus reduce the overall width of the torus. The overall envelope of the PGET can be reduced accordingly. 

