	<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
111	75	397288	11	79	455947	12	76	360442	11	03-JUL-07

Thr_Max in register units for M3R4-111

Thr_Max in register units for M3R4-111

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	70	82	70	76	67	79	79	78	76	74	77	73	73	75	81	73
FEB-2	78	73	75	88	75	82	70	77	77	88	71	83	79	88	82	80
FEB-3	74	78	80	72	68	82	73	81	77	83	68	79	72	81	67	74

Noise rate at Thr_Max [counts/sec] for M3R4-111

Noise rate at Thr_Max [counts/sec] for M3R4-111

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	258690	604389	384623	363653	234511	609237	556363	302936	527903	239281	385197	249983	290592	518728	443482	387038
FEB-2	520014	560148	441596	773158	538551	373634	429071	339471	308456	301299	360029	354902	367633	380868	627896	618424
FEB-3	345593	466471	623678	424390	273310	236012	255728	375095	279765	303808	268163	266417	356543	444027	468582	379488