	<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
77	83	421969	12	85	552393	13	73	456682	12	02-JUL-07

Thr_Max in register units for M3R4-77

Thr_Max in register units for M3R4-77

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	87	83	82	79	83	87	84	89	82	81	84	89	82	85	79	78
FEB-2	83	83	83	80	79	86	86	89	85	87	85	90	81	89	81	88
FEB-3	71	71	75	69	65	64	76	66	76	78	75	74	80	72	78	80

Noise rate at Thr_Max [counts/sec] for M3R4-77

Noise rate at Thr_Max [counts/sec] for M3R4-77

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	544907	468393	409493	358430	404067	450908	367567	302844	275854	372720	422524	372535	281944	535653	496876	686793
FEB-2	568161	705009	477295	573561	591889	389650	540643	501542	473130	478365	386148	484082	620129	578834	742129	727728
FEB-3	449112	686418	361467	574076	373770	483863	383824	238289	254904	300621	343941	506314	373007	815557	516015	645738