Banking veteran Tiernan O’Mahoney is working on a new plan to create an alternative lender called Helios Capital Markets. The former Anglo Irish Bank executive is raising a fund of up to €200 million to provide secured loans to Irish small and medium companies filling a gap in the Irish market left by the withdrawal of Ulster Bank and KBC.  Helios is also expected to help Irish SMEs refinance loans that have been sold by their former banks to private equity and fund investors.  Typical Irish SME loans that Helios is expected to target range from €1 million to €5…