	<i>Thresholds Scan<br />185 M3R4 chambers passed the tests</i></font> Thresholds Scan 185 M3R4 chambers passed the tests

Tables below present:
- Thr_Max(r.u.), Thresholds in register units at Maximum of noise rate;
- N_Max, Noise rate at Thr_Max in counts/sec;
- D_100 = Thr_100(r.u.) - Thr_Max(r.u.) where Thr_100(r.u.) is the threshold in register units at noise rate = 100/s.
The following expression relates the real threshold (measured from the base-line of physical signals) with the thresholds determined by the register units:
Thr(fC)*S(r.u./fC) = Thr(r.u.) - Thr_Max(r.u.)+ OFFSet(r.u.).
Here, OFFSet=17 register units;
S=3.40 r.u./fC is the charge sensitivity corresponding to S=8mV/fC taken for M3R4 chambers;
(Note, that 1 register unit = 2.35 mV)

	FEB-1. Mean values.			FEB-2. Mean values.			FEB-3. Mean values.
Chamber	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Thr_Max [r.u.]	N_Max [counts/s]	D_100 [r.u.]	Test Date	Plots	Comments
42	79	476160	12	81	542566	13	76	432238	12	11-JUL-07

Thr_Max in register units for M3R4-42

Thr_Max in register units for M3R4-42

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	74	79	79	81	79	83	69	82	80	78	87	75	83	77	83	73
FEB-2	81	79	83	79	92	78	80	76	80	79	85	80	88	80	78	80
FEB-3	77	74	72	70	78	73	80	70	78	73	85	73	79	77	82	77

Noise rate at Thr_Max [counts/sec] for M3R4-42

Noise rate at Thr_Max [counts/sec] for M3R4-42

FEB Channels	Ch_1	Ch_2	Ch_3	Ch_4	Ch_5	Ch_6	Ch_7	Ch_8	Ch_9	Ch_10	Ch_11	Ch_12	Ch_13	Ch_14	Ch_15	Ch_16
FEB-1	544892	460183	570529	479556	327524	362604	583026	345787	489953	324546	372721	345481	371106	779236	482524	778896
FEB-2	410542	674904	536198	563000	397887	559321	426762	456378	339145	664573	450114	537865	524453	601058	661392	877469
FEB-3	412620	523576	360146	543933	393017	380518	355192	362898	606363	329199	383369	284435	413704	455818	570899	540118