How i can use Extractor Regex in Jmeter

I need extract the parameters "Location" in the header of the Response......... see example

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HTTP/1.1 301 Moved Permanently Cache-Control: max-age=0, no-cache, no-store, must-revalidate Content-Encoding: gzip Expires: Mon, 11 Jan 2016 13:41:03 GMT Last-Modified: Mon, 11 Jan 2016 13:41:03 GMT Location: hffffer.aspx?GcgvR25kUEPovjjFC8Tv6TErQhGyPEV/aCtmW0wQB76YRC5ShAy/e624URjHnt65zVa8eQCkiOPyB3zIzcKbBhVKSJabVf8z3uqAVKO7tdl8cbHjSQ+/dsTKgxXiuw0B12fhOvPj/pVURdGivisByA== Server: Microsoft-IIS/8.5 X-AspNet-Version: 4.0.30319 X-Powered-By: ASP.NET Date: Mon, 11 Jan 2016 13:41:03 GMT Content-Length: 0

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