From ferguson@cmuhep2.phys.cmu.edu Mon Apr 20 10:12:40 1998 Date: Thu, 16 Apr 1998 11:33:50 -0400 (EDT) From: Thomas Ferguson To: Yuri Bonushkin Subject: Re: Anode electronics Here is our test beam wish-list for the anodes: List of Measurements to be Made on the Anode Electronics During the Summer 1998 Beam Test at CERN 1) Measure the single-plane anode efficiencies and the total number of anode hits on a track as a function of chamber high voltage, position of the track along the wire, preamp threshold and track inclination angle (theta). 2) Measure the single-plane and multi-plane anode timing resolution as a function of all the variables mentioned in 1). 3) Measure the random anode wire hit rate as a function of chamber high voltage and preamp threshold. 4) Measure the efficiencies and timing resolution as a function of the background rate in the chamber using the GIF. 5) Measure the recovery time of the anode electronics by using the high background rate of the GIF. We can do this by looking at situations where there was a background hit in a set of wires at a certain time before the arrival of a real muon through the same set of wires, by using the multi-hit capability of the TDC's. Then we can measure how close in time the muon can come to the background time and still get a new output from the electronics. 6) Measure the threshold, gain and time-offset stability of the electronics as a function of time. 7) Measure the cross-talk probability as a function of the variables mentioned in 1). Regards, Tom