Difference between revisions of "BEC preparation"

Revision as of 18:49, 3 January 2020

There are 28 steps in electronics while the ultracold atomic cloud is prepared.

Inductance 40 mH, How the switch on time is different from switch off, why it moves during one process?

Measurement with a network analyzer and the test coil:

Resonant freq. [kHz]	Capacitance [nF]	Li [mH]	Conditions
1510	0		Only the coil
718.25	0.47	3.9
520	1	3.25	102
371	2.2	3.1
173.75	10	3.27	103

Measurement with a network analyzer and experimental coils connected in series, measured near MOSFETs:

Resonant freq. [kHz]	Capacitance [nF]	Li [mH]	Conditions
391	0		Only the coil
317	0.47	7.2

$\omega_0 =1/\sqrt{L C_0}$

$L C_0 =1/\omega_0^2$

$L_i = (1/\omega_i^2-1/\omega_0^2)/C_i$

@@ Line 4: / Line 4: @@
 Inductance 40 mH, How the switch on time is different from switch off, why it moves during one process?
 ===January 2020===
-Measurement with a network analyzer:
+Measurement with a network analyzer and the test coil:
 {| class="wikitable"
 |-
 ! Resonant freq. [kHz] !! Capacitance [nF] !! Li [mH] !!Conditions
 |-
-| 1510 MHz || 0 || || Only the coil
+| 1510 || 0 || || Only the coil
 |-
 | 718.25  || 0.47 || 3.9 ||
@@ Line 18: / Line 18: @@
 |-
 | 173.75 || 10 || 3.27 || 103
+|}
+Measurement with a network analyzer and experimental coils connected in series, measured near MOSFETs:
+{| class="wikitable"
+|-
+! Resonant freq. [kHz] !! Capacitance [nF] !! Li [mH] !!Conditions
+|-
+| 391 || 0 || || Only the coil
+|-
+| 317  || 0.47 || 7.2 ||
 |}
 <math> \omega_0 =1/\sqrt{L C_0}</math>