	<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
61	78	409154	12	74	564536	13	82	479548	12	21-JUN-07

Thr_Max in register units for M3R4-61

Thr_Max in register units for M3R4-61

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	77	78	80	77	78	74	82	81	79	74	79	75	81	79	82	79
FEB-2	77	76	87	74	76	73	75	68	74	71	71	68	77	72	81	66
FEB-3	88	76	83	84	94	76	77	79	84	80	88	75	89	74	92	67

Noise rate at Thr_Max [counts/sec] for M3R4-61

Noise rate at Thr_Max [counts/sec] for M3R4-61

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	340934	491976	353085	583341	258675	354177	323898	399652	394016	433795	421973	344954	341957	404806	442265	656956
FEB-2	653161	534220	459456	607844	410042	471941	407543	359220	554470	606888	484861	384912	823188	795705	793084	686040
FEB-3	392366	701377	433724	567849	361616	386267	288389	414615	312235	393439	358328	366936	444201	573572	637978	1039873