	<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
68	81	444098	14	81	411930	12	76	475820	12	08-MAR-07

Thr_Max in register units for M3R4-68

Thr_Max in register units for M3R4-68

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	78	80	83	92	79	81	78	89	69	83	79	86	80	87	82	76
FEB-2	78	91	83	74	81	77	79	81	88	78	81	87	78	79	84	81
FEB-3	71	78	77	76	69	73	73	72	76	72	78	74	84	74	85	84

Noise rate at Thr_Max [counts/sec] for M3R4-68

Noise rate at Thr_Max [counts/sec] for M3R4-68

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	488186	429558	740920	269666	691540	458986	349463	240867	397057	418893	497941	235437	501088	340944	438338	606680
FEB-2	496206	430646	334683	445366	364069	288192	347740	309740	389009	290822	413983	304317	521242	331160	594070	729642
FEB-3	498768	433702	426899	465423	541265	438088	445334	386222	386602	340655	560449	328555	723837	397565	564440	675317