	<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
21	80	505415	13	78	377772	11	78	337038	11	27-JUN-07

Thr_Max in register units for M3R4-21

Thr_Max in register units for M3R4-21

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	86	76	91	76	89	72	88	77	86	70	80	72	88	79	81	75
FEB-2	74	84	85	82	77	81	76	75	69	80	73	78	72	83	77	77
FEB-3	90	78	81	75	81	81	87	75	86	72	80	74	75	67	83	65

Noise rate at Thr_Max [counts/sec] for M3R4-21

Noise rate at Thr_Max [counts/sec] for M3R4-21

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	469831	607951	526511	438295	425468	481341	369473	342911	451389	500884	557940	453606	465162	579371	509464	907037
FEB-2	322749	409859	657200	387016	194250	326852	233123	255178	450390	338095	434962	387637	291148	469363	369355	517169
FEB-3	309941	432654	228713	422343	216502	599247	174722	248853	389165	226611	276809	273033	304921	295493	329285	664315