Northwestern University’s Kellogg School of Management announced plans Wednesday to build a new, high-tech building on Evanston’s lakefront. The facility will replace the business school’s James L. Allen Center, nearly doubling the number of classroom seats, and will be the centerpiece of the Full Circle Campaign, a $600 million fundraising effort. The building will serve as the chief location for the school’s executive MBA program and other non-degree programs for business executives, and as a meeting place for students, alumni and faculty. “The concept of Full Circle highlights the crucial role that alumni play in creating the virtuous circle that allows Kellogg to thrive and be distinctively different,” said Kellogg Dean Francesca Cornelli in a statement.