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Irradiacion

Irradiacion.WebHomer1.11 - 28 Jun 2010 - 06:18 - PabloVazqueztopic end

---+ Irradiation of DEFET transistors with CO60 souce at Santiago

---++ Procedure
2 chips with 30 bonded transistors will be irradiated in several steps. Biasing voltages and Adaptor Boards pin assingment can be seen in
   * [[%ATTACHURL%/BoardsLayout.xlsx][BoardsLayout.xlsx]]: Multi Transistor biasing voltages; Adaptor Board pin assingment; Dose Setup information

Ids_Vgs curves will be done before irradiation and after each step. What we are interesting in is: Threshold Voltage, transconductance, substhreshold swing

---+++ Measuring steps from 0 to 10 Mrad (in Mrad) dose ~ 11.5 Krad/h):

   * 0.1 (9 h) I1: 24.6:14h -> 24h ; T1: 25.6:9h ->12h
   * 0.2 (9 h) I2: 25.6:12h -> 21h : T2: 28.6:9h -> 12h
   * 0.3 (9 h) I3: 28.6:12h %H%
   * 0.5 (18 h)
   * 0.8 (27 h)
   * 1.2 (27 h)
   * 1.7 (45 h)
   * 2.3 (54 h)
   * 3.0 (63 h)
   * 5.0 (180 h)
   * 7.5 (225 h)
   * 10  (225 h)


---++++ IV curves
   * [[%ATTACHURL%/chip0_25t_43r_.25s.xlsx][chip0_25t_43r_.25s.xlsx]]: Chip 0

   * [[%ATTACHURL%/chip1_25t_44r_.25s.xlsx][chip1_25t_44r_.25s.xlsx]]: Chip 1

   * [[%ATTACHURL%/chip2_25t_44r_250ms.xlsx][chip2_25t_44r_250ms.xlsx]]: Chip 2

---++++ Broken Transistor before irradiation: chip0=10, chip1=15, chip2=8

   * [[%ATTACHURL%/Chip_0_1_2_bad.pdf][Chip_0_1_2_bad.pdf]]: Broken transistors

---+++ Adaptor Boards photos


  

   

   * Testing Board: <br />

    <img src="%ATTACHURLPATH%/testing_board.JPG" alt="Testing Board"  width="1024" height="768"  />




   * Chips_Holder Board: <br />

    <img src="%ATTACHURLPATH%/chip_holder_board.JPG" alt="Chips_Holder Board"  width="1024" height="768"  />

   

   * Irradiation Board: <br />

    <img src="%ATTACHURLPATH%/Irradiation_board2.JPG" alt="Irradiation Board"  width="1024" height="768"  />

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