As seen in FIG 12B, first portion 130 of {HEAD ~ P well} 112 may be between first source region 125 and buried oxide layer 109 and {TAIL ~ second portion} 132 of P well 112 may be between second source region 127 and buried oxide layer 109 
As seen in FIG 12B , first portion 130 of { HEAD ~ P well } 112 may be between first source region 125 and buried oxide layer 109 and { TAIL ~ second portion } 132 of P well 112 may be between second source region 127 and buried oxide layer 109
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