	<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
157	79	402286	12	80	433153	12	77	472612	12	11-JUN-07

Thr_Max in register units for M3R4-157

Thr_Max in register units for M3R4-157

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	73	85	78	78	80	79	75	79	76	85	84	86	75	80	77	76
FEB-2	84	74	80	81	73	75	82	78	80	79	87	86	74	85	77	79
FEB-3	77	77	76	78	81	77	78	80	76	72	79	70	78	73	88	78

Noise rate at Thr_Max [counts/sec] for M3R4-157

Noise rate at Thr_Max [counts/sec] for M3R4-157

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	455865	529265	380920	383127	426907	395952	319181	313912	360893	260052	242344	325359	344112	480668	470782	747244
FEB-2	501900	531537	328110	615312	373524	354323	325799	362784	559295	410541	455325	300012	401047	408795	537815	464325
FEB-3	518756	592978	588657	394771	386085	378787	353491	471910	410138	293568	724696	581782	350074	429551	666623	419929