	<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
87	78	400637	11	78	436691	12	76	368449	11	02-JUL-07

Thr_Max in register units for M3R4-87

Thr_Max in register units for M3R4-87

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	75	78	75	81	78	82	76	82	75	84	78	78	76	74	72	80
FEB-2	74	87	89	73	76	78	84	80	76	82	72	80	73	74	80	77
FEB-3	79	81	76	76	71	70	73	77	75	81	72	77	76	71	77	77

Noise rate at Thr_Max [counts/sec] for M3R4-87

Noise rate at Thr_Max [counts/sec] for M3R4-87

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	388081	460284	377190	391076	386496	310555	278791	261462	424671	334741	334547	563277	433754	429323	418823	617118
FEB-2	473590	543329	449496	392411	316447	419918	329042	360606	341838	472515	416870	348052	405155	575091	602110	540585
FEB-3	443587	483791	299141	323992	237517	239464	276054	606335	314264	276642	366564	378144	370395	316279	480387	482629