Short answers, pulled from the story.
The Senate convened for the first time on the 25th of December 1799 within the Luxembourg Palace. Napoleon Bonaparte had just seized power through the Coup of 18 Brumaire to reshape France's government.
It consisted of exactly sixty permanent members who could not be removed from their posts. The number of senators increased to one hundred twenty under new rules established during a revision of the Constitution in year X during 1802.
Napoleon introduced the system of sénatoreries in January 1803 to ensure total compliance from senators. Each recipient gained the right to occupy a residential palace and received annual revenue ranging between twenty thousand and twenty-five thousand francs.
Emmanuel Joseph Sieyès presided over the first sitting on the 27th of December 1799 until February 1800. François Barthélemy took the role from mid-February 1800 through late February 1801.
The Senate dissolved completely in April 1814 following Napoleon's overthrow. Louis XVIII then abolished the body when he restored the Bourbon monarchy that same year.