	<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
48	78	562248	16	86	512825	12	78	462052	12	07-FEB-07

Thr_Max in register units for M3R4-48

Thr_Max in register units for M3R4-48

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	74	91	75	78	81	72	87	71	74	76	79	75	78	74	83	78
FEB-2	82	97	83	86	77	87	81	97	83	87	86	90	83	84	80	87
FEB-3	71	75	78	76	73	80	76	82	77	82	79	87	78	72	83	84

Noise rate at Thr_Max [counts/sec] for M3R4-48

Noise rate at Thr_Max [counts/sec] for M3R4-48

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	513320	604495	482191	433132	461462	587418	544079	475452	597096	548279	470184	451786	598932	585475	993658	649001
FEB-2	424575	633486	361527	633529	335243	466627	402896	564191	392123	529638	405200	565044	495305	653661	572909	769243
FEB-3	518913	477370	454310	397648	330633	534439	358118	336511	452026	378423	670549	371634	642653	366697	590282	512629