	<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
40	77	517058	13	74	490599	12	77	443559	12	10-JUL-07

Thr_Max in register units for M3R4-40

Thr_Max in register units for M3R4-40

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	82	74	86	71	79	75	82	71	77	70	74	76	80	73	82
FEB-2	70	77	71	72	78	74	80	79	69	81	79	69	69	68	75	69
FEB-3	90	73	90	66	79	63	81	72	83	73	86	67	82	79	78	75

Noise rate at Thr_Max [counts/sec] for M3R4-40

Noise rate at Thr_Max [counts/sec] for M3R4-40

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	461261	630679	640156	515365	349828	568121	291533	464443	460296	446249	436136	534596	602202	481638	612803	777617
FEB-2	464072	700189	473273	500307	411241	423967	425763	439703	414379	337044	399691	376640	465290	485577	580867	951579
FEB-3	592801	492687	422484	534422	427100	365492	348782	422605	430943	244545	449359	262957	504569	614286	536563	447345