Why We?re Here Run IIb ? Ancient History TDC Production Review – Introduction



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Why We?re Here Run IIb ? Ancient History TDC Production Review – Introduction

Bucknell University, US has reference to this Academic Journal, TDC Production Review – Introduction Pat Lukens Run IIb ? Ancient History Exactly 2 years ago, this project was reviewed by Dan Lehman At that time, we justified our DAQ upgrades based on bandwidth needs Level 2 accept needs 1 kHz COT TDCs were thought so that be good so that 300 Hz Replacement in consideration of COT TDCs was approved Why We?re Here The ?Run IIb? project ends in one year A pretty hard deadline that can only be pushed ~3 months That isn?t a lot of time so that build 350 TDCs We must start now. The job in addition to lead times are long. Part so that order, MOUs so that sign, contracts so that establish Testing program so that develop. Therefore, we need the decision so that proceed now Note, we aren?t asking in consideration of approval. We have that. We will have so that ask in consideration of a more money, but not justification

 Breithaupt, Brad Bucknell University www.phwiki.com


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CDF Support We need the real support so that replace the TDCs The silicon experience taught me that 500-700 individual review committees meant death in consideration of the project. Building in addition to installing will require lots of effort DAQ work, offline/Level 3 software Testing in addition to commissioning the new devices. Our volunteer army must want so that do this Strong support by this committee is probably needed so that rally the troops. Recent developments A lot of recent work has led so that a large increase in the current TDC read out speed. Indications are that the current TDCs will be able so that meet the Run IIb specification in consideration of readout. Confirmation comes in the following talks It is therefore reasonable so that question their replacement. Pros in addition to Cons For me, the principal advantage so that the new TDC is head room in readout speed. May be needed in real operation. May allow growth so that higher read out rates More low PT triggers. Perhaps, but where?s the next bottleneck? The disadvantage is effort in addition to commissioning Note current TDCs require commissioning. XTC cards will be added so that layers 3, 5, in addition to 7 Perhaps alternative strategies can mitigate this.

Should We Consider Scope Creep? What prevents us from going beyond 1 kHz? Are the next bottlenecks reasonable so that consider? Do we have any interest in this? Creeping scope is in violation of all the project management principles ever laid on us. However, may be the best thing in consideration of the experiment. However, a decision so that abandon headroom or expandability impacts our future directions. Resources are finite, so it may be best so that do so. The Charge Our charge so that the committee is simple We would like your opinion on proceeding alongside new TDC production. If more information is needed before the question can be answered, let?s try so that get it soon. If a definite consensus is reached, please provide a clear argument in consideration of it. If a consensus or simple decision is impossible, give us the best advice you can. Let the reviewing begin The schedule forces us so that decide on production now For better or worse, we?re a lot smarter now than we were then. We expected this so that be. Note, the date in consideration of baselining was forced by the Director (tied so that the silicon upgrade) in addition to the silicon lead time. The collaboration needs so that move ahead on this issue, in addition to get behind the decision. This TDC production review will bring out the issues in addition to information needed so that proceed.

Chapter 3 Adjusting the Accounts Objectives of the Chapter I. Accrual Accounting The Time-Period Concept (Periodicity) Revenue Recognition Principle (SFAS No. 5) (-An Accrual Basis) The Matching Principle Accrual vs. Cash Basis Accounting Accrual vs. Cash Basis Accounting (contd.) II. Adjusting Entries Adjusting Entries (contd.) Types of Adjusting Entries A. Accruals a. Accrued Expenses- An Example b. Accrued Revenues ? An Example B. Deferrals a. Unearned Revenues b. Prepaid Expense C. Estimated Expenses (based on the matching principle) Adjusting Entries Exhibit 3-9 Panel B (contd.)

Tevatron Plan – July 2003 Today Tevatron plan ? Sep 2004 Tevatron plan ? Sep 2004

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